EFFECTIVE JUNE 17, 2002, WE HAVE DISCONTINUED A NUMBER OF HIGH END/LOW
VOLUME PRODUCTS AND ALSO PRODUCTS WHICH WE HAD PREVIOUSLY SOLD AT A LOSS. IN
ADDITION, WE WILL NO LONGER BE DEVELOPING NEW PARTS FOR ISUZU, GEO STORM, OR
LOTUS VEHICLES SPECIFICALLY TO SELL TO THE PUBLIC, AND WE ARE DISCONTINUING
PRODUCTION OF MANY OF OUR OWN ORIGINAL PARTS FOR THESE SAME VEHICLES, IN
ORDER TO DEVOTE MORE PRODUCTION CAPACITY TO OUR RACING PROGRAM AND OTHER PROJECTS.
OUR OWN ORIGINAL ISUZU, GEO STORM, OR LOTUS PARTS CAN NOW BE CONSIDERED LIMITED
EDITION OR LIMITED PRODUTION. IF YOU SEE SOMETHING YOU DESIRE TO PURCHASE, WE
SUGGEST YOU ORDER IT IMMEDIATELY BEFORE IT IS GONE. ONCE IT IS GONE, IT WILL
BE GONE FOREVER.
WE CONTINUE TO OFFER PRODUCTS FOR THESE VEHCILES WHICH ARE MANUFACTURED FOR US BY
OTHER COMPANIES.
PRODUCTS WHICH REMAIN AVAILABLE ARE DENOTED IN THE CATALOG WITH A PRICE NEXT
TO THE PRODUCT DESCRIPTION. PRODUCTS WHICH ARE NO LONGER AVAILABLE ARE NOTED
AS SUCH INSTEAD OF LISTING A PRICE.
Welcome to the catalog website of Isuzuperformance. Isuzuperformance is the only
performance parts distributor in North America that is totally dedicated to
supplying you with performance parts for your Isuzu, Geo Storm, Asuna Sunfire,
and Lotus Elan M100 car.
We specialize in Isuzu Impulse/Piazza/Sunfire, Stylus/I-Mark/Gemini, Geo
Storm and Lotus Elan M100.
We are specialists in Isuzu cars, but we do not offer anything for trucks,
suvs, or commercial vehicles, and can not offer any assistance with those vehicles.
Isuzuperformance does not offer new OEM parts, because they
would be cheaper through the dealership, and Isuzuperformance does not offer used
parts beyond those we just happen to have.
The following companies will NOT be carried by
Isuzuperformance, due to their fraudulent business practices, and their past
attempts to defraud Isuzuperformance or it's employees: Erebuni
Aerobutique, Jacobs Electronics, Superchips USA. (This is somewhat less of an issue
currently, because all three of these companies have closed their doors).
Due to Hotshot Systems inability to deliver orders within a two month
time span, we will no longer be carrying Hotshot Systems products. (This company is
also no longer in business).
Due to excessive complaints reporting poor quality and poor fit,
Pacesetter
products will no longer be carried by Isuzuperformance. (This company last introduced
a new product in 2007, and is probably also on their way out).
News
2012; Lessons Learned The Hard Way
The Isuzuperformance Racing Team I-Mark started the racing season like a rocket, building
a seemingly insurmountable lead by mid season. Only to see the car run successively slower
at each event of the second half of the season.
Equipment improvements during the season included:
Adjustable tension rods to improve cornering.
Parallel brake proportioning valves to adjust brake bias.
A taller front air dam to improve front end grip.
Adjustments to the position of the seat, steering wheel, stick shift, and pedals to improve
vehicle control.
By June, the car was running so fast that stress cracks started showing up around the doors
and rear hatch. It seemed the car was driving out from under its body panels.
July and August were Left-Foot-Brake emersion, followed by September’s lesson in brake cooling
and rotor glazing.
October brought a fuel pump failure, which turned into another lesson. The original fuel pump
had been running out of pressure at high RPM for years, with the engine providing its full
capacity of low end grunt, but seemingly running out of steam at upper RPM in the taller gears.
With a new fuel pump, the car picked up a healthy 20 MPH in top speed.
Despite all this, finish times kept increasing instead of decreasing, as if the velocity of the
car was overpowering the grip of the tires.
Going into the last event of the season, a double-points event, the lead was sufficient that
there was no mathematical way the IPRT I-Mark could loose, even if the car did not attend that
final event. Until the region officials changed the points formula for the final event. And on
a 40 degree Fahrenheit weekend, a Daytona Coupe with throttle issues eked out a
fraction-of-a-second victory over the IPRT I-Mark which spent most of the afternoon sliding
sideways as if on ice skates. And the season points, which should have been a narrow victory
for the I-Mark, turned into a narrow loss.
The final lesson learned the hard way: “Hoosier tires are good for 60 runs, not 120 runs”. The
compound in the tires was past its life in July, and just got harder and lost more and more grip
as the season drew to an end. Looking at the data, it’s clear that the 205 tread width tire is
too large for a ~140 HP, 1967 lb. car, because the tire temperature never got above 135 degrees
(140-160 degree operating range), and the tires are designed to wear through to the cords at the
same time the compound reaches the end of its life. So the car needs a narrower tire and/or a
softer compound tire, which Hoosier does not offer. 2013 will see a change to Hankook tires, maybe
not as much grip, but perhaps a longer life compound.
Eliminating Caster And Camber Fluctuation
Adjustable Tension Rods for 1985-89 Isuzu I-Mark, Gemini, Chevrolet Geo Spectrum and Asuna Sunburst.
The first little tuning trick up the Isuzuperformance Racing Team's sleeve. Tension Rod in JDM jargon,
Strut Rod in Muscle Car jargon, or Caster Rod in Australian car jargon. The stock rubber bushings
flex and compress under acceleration, braking, and cornering, enough to make significant changes to the
caster and camber. The spherical rod end completely eliminates the flex and the alignment changes and
improving handling.
Starting With A Small Lead; Mid Season 2012
The Isuzuperformance Racing Team hit thr ground running in the Spring of 2012, starting the season with
a fully sorted suspension and no changes from the Fall of 2011. By the Event 3, driver Bill Luton was
setting personal records on the Index, pushing the car, and himself. faster than either had ever gone
before, and the I-Mark started lifting the inside front tire again on corner exit. Never one to leave
well enough alone, it was back to tuning springs and sway bars. Event 4 was a disappointment, a very
slow time, only ten percent faster than 2011! A bit more shuffling of springs and sway bars, and
the car is balanced and is not lifting that inside front tire off the ground.
Entering July, the IPRT I-Mark has faced a V8 Mustang, V8 converted RX-7, and a 2002 Pontiac Trans Am,
and leads the points race with three first place victories.
Mike promises to be back with the Factory Five Daytona Coupe, with new suspension, brakes, and fuel
injected Chevy V8 engine. But there are some tricky little tuning pieces for the I-Mark in the pipeline
that will be going onto the car soon, to pick the pace up even more.
And while June's Evo School netted only a .8 second improvement (on a 33 second course), Jinx Jordan's
comment: "This is a FAST car, for a car like this, Left-Foot-Braking is a must.", has been heeded.
Anyone who might come across a little red car, flying through corners, with the engine singing loudly,
and the brake lights lit up like a Christmas tree, then LFB school is in session.
Isuzuperformance Racing Team Lotus Elan M100 Polyurethane Engine Mount Bushings
Available for both Non-SIR / Non-Airbag and SIR / Airbag Equipped Elan M100.
Limited Production / Limited Availability.
Available for purchase for a limited time in our Ebay store at:
http://stores.ebay.com/o-kushon.
Isuzuperformance Racing Team Driver, Bill Luton, Takes Second Place In St. Louis Region SCCA 2011
X Prepared Class Points Series
The Isuzuperformance Racing Team I-Mark takes a solid second place finish in the X Prepared class
points series in the St. Louis Region SCCA, between the Mike Marshall, the owner of the above pictured
Factory Five Daytona Coupe, and Gary Fogleman, the co-driver of the same Factory Five Daytona Coupe.
The picture illustrates the level of competition that the IPRT I-Mark is up against. This vehicle is
a replica of a Shelby Cobra Hard Top. Make no mistake, Mike has built the car specifically for autocross,
with technical assistance from both Factory Five Racing Inc. and the international owners club.
The IPRT I-Mark started 2011 with a new rear suspension design. For the first four events, the car would
not take a corner above 45 MPH without spinning. The Daytona Coupe was not running at 100% at the beginning
of the year either, but had fewer issues and both driver and co-driver quickly built a lead in the points
series. Co-driver Gary schooled everyone in the class at the fourth event with a shockingly fast time.
In the second half of the season, the IPRT I-Mark was back into the victories and by the nineth and tenth
events it was outhandling the Lotus Exiges. Counting the victories, Mike in the Daytona Coupe finished
above Bill in the I-Mark five times, and the Bill in the I-Mark finished above Mike in the Daytona Coupe
five times. But the points are given by the magnitude of victory, and Mikes early season wins over the
sub-45 MPH I-Mark were large enough that it would have taken an additional two races in the season for
Bill to claw back to first place.
But who complains when they are the 130 HP, four cylinder, FWD car, finishing between two drivers of a
Cobra Hard Top?
1. Mike Marshall, 2007 Factory Five Daytona Coupe, 59117 Points
2. Bill Luton, 1989 Isuzu I-Mark, 58181 Points
3. Gary Fogleman, 2007 Factory Five Daytona Coupe, 56827 Points
2012 will see the IPRT I-Mark starting with a fully sorted suspension.
Lotus Elise Owner Drives IPRT I-Mark RS, Beats Owner, Proclaims "It Handles Better Than The
Lotus!", Beats Three Lotus Exige S Drivers
The engine of Joe Floretta's 2005 Lotus Elise was running rough prior to the final St. Louis
SCCA Solo2 event of 2011 (Event #9), and he asked to co-drive the Isuzuperformance 1989 Isuzu
I-Mark RS. Joe had never driven FWD before, and had never driven the IPRT I-Mark before. But he
got into the car and put down a scorching 44 second time on his first run. Before his second
run, he proclaimed that the I-Mark handed better than his Lotus Elise (0:37). He beat the best
time of the vehicle owner by .633 seconds. But both he and the vehicle owner bested the times
of three different drivers sharing a Lotus Exige S Cup Car (supercharged, 240 HP, AP brake
package).
Vehicle owner Bill Luton raised his own times to a personal record on the index for both the
season and lifetime, and stated that it is clear that the car is no longer holding back his
driving, but his driving is holding back the car. Six plus years of tuning have paid off,
and the handling is right. "Hello, Evo School, when is your next available class opening?".
It's hard to beleive that the Isuzuperformance Racing Team I-Mark RS has been doing battle with
Lotus Sevens, Lotus Elises, Evos, STis, and Daytona Coupes, on a basically stock, transplanted,
90-91 1.6 liter DOHC engine. Power adders had been confined to some aluminum pieces, and a cat
back exhaust, with full concentration going to the suspension. The guiding tenet being "Don't
waste time increasing the power of an autocross car until the suspension is fully sorted so the
car can actually do something with the additional power".
At Event 8, a Super Stock class Elise owning passenger commented:
"Every time you took a corner, I thought you were braking too late, and going too fast.
I was sure you were going to spin. But the car stuck to the ground and made the turn. The Elise
is faster on the straights, but this thing is faster than the Elise in the corners."
If an Elise owner says that a 130 HP, FWD, rear beam axle nightmare corners better than his own
car built by the boys in Hethel, then the suspension is sorted, and it's time to start building
some horsepower.
Out comes an Isuzuperformance header, with a full battery of reinforcement welding, side straps
and gussets, engine block bracket, and big muscle car three bolt collector.
Low Calorie Pulleys
Step two of the 2011 XP Class Points War. Previously set aside for a rainy day, the aluminum
underdrive pulleys go into use. With power steering delete, for the manual steering I-Mark RS,
the two pulley set nets a 7.34 pound drop in rotating mass.
For 1990-93 Isuzu Impulse, Stylus, Gemini, Geo Storm and Lotus Elan with 4XE1 engines, and 1985-89
Isuzu I-Mark, Gemini, and Chevrolet/Geo Spectrum with 4XC1 engines.
Heavy duty bolts heat treated to 230,000 PSI tensile strength are many times stronger than the
OEM bolts, and stronger than ARP bolts (4.5% stronger than bolts rated at 220,000 PSI and 15%
stronger than bolts rated at 200,000 PSI). Prevents throwing of rods through the front of the block
and spun rod bearings caused by failure of the weak OEM bolts.
The Big H On The Big V
Undoubtedly this combination violates numerous laws of the universe. Even the suggestion should cause
a hole to open up and swallow the combination. This is one of a set of Hoosier A6 tires mounted on
Volk TE37 wheels. That is the best autocross racing tire of North America paired with the best light
weight racing wheel of Japan. Anything that good has to be illegal, immoral, and fattening.
The Kumho Victoracers provided many years of racing and very long tread life (300+ runs on a tire!).
But at this time, there seems a distribution or delivery problem with tires from Korea. The US
Isuzuperformance Racing Team members have been forced to switch tire brands and suppliers, to the
Big H and Hoosier Tire Midwest.
Initial results are promising, with a victory over the Daytona Coupe on the first outing with the new
tires. Once the tire pressure settings are sorted, we should see a giant leap forward.
Mid Season 2011; The Uphill Battle Begins
Winter 2010 was marked by the discovery that the custom made rear springs of the Isuzuperformance Racing
Team 1989 I-Mark RS, were in fact 1/3 the spring rate that was ordered from a Kansas manufacturer. This
prompted yet another radical redesign of the rear axle to accept coilover springs. What had been a quest
to find the biggest rear sway bar built by man, became a quest for ever smaller sway bars as tuning
commenced with the 2011 season. Spending five races to sort the suspension on a car that oversteers at
each successive press against the limit, is not the way to build a comfortable lead in a racing series.
Meanwhile, the competition in the Daytona Coupe have upped the ante, Rebuilding the suspension specifically
for autocrossing, taking the extreme step of corner weighting to optimize the handling, and sparing no
expense turning the endurance road racing replica into a cone carving monster. This is accompanied by
an astonishing driving skill development, raising the team from the 78th percentile to the 93rd percentile
in finishing position in a matter of ten weeks.
2011 will be decided in the second half of the season, as the tuning, driving, and spending reach
a frenzied pace.
Type C Engine
The Type Competition was a special edition Gemini built to commemorate Isuzu's Factory Racing Team victories
as All Japan Rally Class B Driver Champion for 1990, 1991, and 1992, and N1 Taikyu Endurance Series Class 2
Champion in 1991.
These limited production vehicles were special edition models equipped with many of the same racing components
of the rally and circuit machines they pay tribute to. Engines were specially assembled with internals carefully
matched for weight and clearances, resulting in factory "balanced and blueprinted" engines, with power output
significantly above the 180 PS (178 HP) of the standard Gemini engine. Visibly, the Type C engine is
set apart from the standard with a blue upper intake manifold and blue valve cover.
This engine is from the Isuzuperformance Racing Team Gemini, removed for inspection, and found to be in
almost new condition. The original connecting rod bolts were replaced with IPRT units, and a fresh set of
OEM piston rings installed, and the engine is back powering the IPRT Gemini.
Isuzuperformance Racing Team JT1s Front Lower Control Arms
For 1990-93 Isuzu Impulse, Piazza, Stylus, Gemini, Geo Storm, and Asuna Sunfire.
Front Wheel Drive and All Wheel Drive.
Lotus/Irmscher style bolt on or ball joint sway bar end link mounts. Threaded, bolt on aft bushing for
use with the Isuzuperformance Racing Team Polyurethane Suspension Bushing Sets. Not for sale to the public.
Isuzuperformance Racing Team JT0s Front Control Arms
For 1985-89 Isuzu I-Mark, Chevrolet/Geo Spectrum, Asuna Sunburst, Isuzu Gemini JT150 and JT190.
Original front control arms are held together by eight spot welds. Reinforced with continuous
seam welds, strength and stiffness is more than doubled over the originals. Not for sale to the public.
Isuzuperformance Racing Team Driver, Bill Luton, Wins St. Louis Region SCCA 2010
X Prepared Class Championship
2010 was a particularly competitive year for the X Prepared class, with the addition of several
new contenders as well as equipment and driver training for returning competitors.
The 2007 Factory Five Daytona Coupe driver/owner and co-driver had attended numerous driving schools
as well as changing final drive ratios to maximize acceleration. The Lotus Elise Supercharged driver
returned with another year of experience under his belt. In addition to these, new competitors
included the 2007-2009 STL Region Third Place Overall Index Points winner and owner of a 2005 Subaru
Impreza STi, and his co-driver the 2007-2009 STL Region Top Ten Overall Index Points winner, a Lotus
Exige, a co-driver for the Lotus Elise Supercharged, a 2008 Mitsubishi Lancer Evo, and a road race
prepped 1994 Ford Taurus SHO whose driver and co-driver have been active racers in the region for
many years.
The Isuzuperformance Racing Team I-Mark competed with no significant equipment changes, and
depended solely on a diet of thorough and drastic alignment adjustments to maximize the affects
of the previous years suspension upgrades, feather like chassis weight, and 130 HP 90-91
stock spec engine, to edge out the competition in vehicles valued at many times more than the
little I-Mark, and all of whom make double or more the horsepower of the little I-Mark.
The driver was quoted as saying "Once we modified the non-adjustable rear axle to allow for toe and
camber adjustment, the car really came to life. Then we took the front alignment settings to
the extreme, and our indexed times dropped noticeably."
Second place was the 2007 Factory Five Daytona Coupe driven by the car owner, third place
was the same 2007 Factory Five Daytona Coupe driven by the co-driver, fourth place was the
2005 Lotus Elise SC (supercharged), fifth place was a tie between the 2005 Subaru Impreza STi
driven by the 2007-2009 third place overall index points winner and the Lotus Exige, seventh place
was the 2005 Lotus Elise Supercharged diven by the co-driver, eighth place was the 2008 Mitsubishi
Lancer Evo, ninth place was the 2005 Subaru Impreza STi driven by the 2007-2009 top ten overall
index points winner, tenth and eleventh places were the road race prepared 1994 Ford Taurus SHO
driven by the owner and co-driver in that order.
First place victories include:
First Place; X Prepared Class; STL Region SCCA 2008 Takata / Solo Performance Specialties
Series Autocross Event #4, May 9, 2010, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Takata / Solo Performance Specialties
Series Autocross Event #5, May 23, 2010, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Takata / Solo Performance Specialties
Series Autocross Event #8, July 11, 2010, St. Louis, Missouri, USA.
The team even took the car out for a Gymkhana event at Gateway Raceway on May 8, 2010, as a good
opportunity for a practice session. Bad news for the field of turbocharged Sylvias at the event,
who could not match the little I-Mark's time, even thought the I-Mark has no emergency brake to
induce a drift. All in good fun, and the drifters found a new respect for a well tuned FWD chassis
that can actually inertia drift at speeds as low as 35 MPH.
Isuzuperformance Racing Team Sugiyama Shims
For 1990-93 Isuzu Gemini, Stylus, Piazza, Impulse, Geo Storm, and Asuna Sunfire.
For fine tuning the Nishiboric four wheel steering oversteer and understeer characteristics.
Provides for tuning specific to vehicle use, from straight line stability for drag racing to
high rear slip angle for drifting. Not for sale to the public.
Isuzuperformance Racing Team 4XE1 and 4XF1 Aluminum Crank Sprockets
For 1990-93 Isuzu Impulse, Stylus, and Geo Storm, and 1990-93 Isuzu Gemini and Piazza,
with 1.6 Liter DOHC (left) and 1.8 liter DOHC Engines (right).
A direct replacement for the long discontinued and brittle cast steel OEM crank sprockets, these
aluminum crank sprockets weigh less than half as much as the originals. The weight savings may
not seem significant, but when combined with the Isuzuperformance Racing Team aluminum flywheel,
clutch pressure plate assembly, crank pulley, power steering pump pulley, alternator pulley,
and cam sprockets, this accounts for a reduction of over 14 pounds 12 oz (14.75 lb) in the
rotating mass of the engine, and a power gain of 25+ HP before even touching the pistons, cams,
intake, exhaust, or computer. Not for sale to the public.
Isuzuperformance Racing Team Driver, Bill Luton, Wins St. Louis Region SCCA 2009
X Prepared Class Championship
Another successful year for the St. Louis branch of the Isuzuperformance Racing Team.
Second place was won by a Lotus Elise SC (supercharged), Third and Fourth places were won by
a 2007 Factory Five Daytona Coupe.
Victories include:
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #1, March 29, 2009, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #2, May 10, 2009, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #3, May 25, 2009, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #6, August 16, 2009, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #7, August 30, 2009, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #8, October 18, 2009, St. Louis, Missouri, USA.
Isuzuperformance Racing Team 4XE1 Windage Tray
For 1990-91 Isuzu Impulse, Stylus, and Geo Storm, and 1990-93 Isuzu Gemini,
with 1.6 Liter DOHC Engine.
Reduces oil splashing and keeps the oil in the pan, allowing additional power that
would normally be lost without the use of a windage tray. Not for sale to the public.
Isuzuperformance Racing Team JT1s Rear Lower Control Arms and Trailing Arms
For 1990-93 Isuzu Impulse, Piazza, Stylus, Gemini, Geo Storm, and Asuna Sunfire.
Front Wheel Drive and All Wheel Drive.
Finding a lack of unbent used control arms and trailing arms for use with the
Isuzuperformance Racing Team Polyurethane Suspension Bushing Sets, Isuzuperformance
manufactured new reproductions of the originals. Not for sale to the public.
Isuzuperformance Racing Team Four Wheel Endurance Racing Brake Kit
It started as a challenge, to fit the largest body four piston caliper available onto the
stock 90-93 front rotor, then match a four piston caliper for the rear, all retaining the
same fluid capacity as provided by the original master cylinder.
The result was the basis for a completely new modular brake system. This allows for the
use of vented front disks ranging in thicknesses from .81 to 1.0 inches and diameters
from 9.7 to 13 inches, and rear brakes from .29 solid to .86 vented and diameters
from 10.1 to 13 inches. Brake pads are 20-40% larger than original, sweep a wider area
on the rotor, and there are a myriad of different compounds available.
Configured on the OEM brake disks, this system provides about four times the braking
force of the original 90-93 brake calipers, while eliminating brake drag caused by floating
calipers.
Designed for track use on racing vehicles. Designed for endurance racing, 12-24 hour
events, when configured with 1 inch thick vented front rotor and .86 inch thick vented
rear rotor.
Not for sale to the public.
Isuzuperformance Racing Team Clutch Lever
Reduces the pedal 45 pound pedal effort of the Isuzuperformance Racing Team clutches back to a more
managable 35 pounds, the same pedal effort of other manufacturer's racing clutches. Reduces driver
strain and fatigue, reduces stress on the vehicle fire wall, allows for more precise clutch control
and feathering for more consistent launches. Reinforced and heavy duty construction. Not for sale to the public.
Isuzuperformance All Wheel Drive Rear Wheel Bearing / Rear Hub Assembly
For Isuzu Impulse RS AWD Turbo, Isuzu Gemini JT191S AWD Sedan and Coupe, and Isuzu Piazza JT221 with ABS.
Rear bearing and hub assembly for all wheel drive models featuring replaceable sealed tapered
roller bearing with tempered and heat treated bearing races last more than four times longer
than the long discontinued OEM hub units. Not for sale to the public.
Isuzuperformance Racing Team Driver, Bill Luton, Wins St. Louis Region SCCA 2008 X Prepared Class
Championship
In a season long battle against a Lotus Elise SC (supercharged), the Isuzuperformance 1989 I-Mark RS
proved victorious. Impressive enough considering the I-Mark has been running a 1991 stock trim built
engine, meaning the Elise SC has almost double the horsepower. But even more so because the I-Mark
starting the season on a compeletely new coilover suspension, which was not properly dialed-in until
after the last points event of the season.
Victories include:
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #2, April 13, 2008, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #3, August 17, 2008 (Postponed due to high winds), St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 R & S Racing, Solo Performance Specialties
Series Gateway National Autocross and Event #4 (Combined Double Points Event), May 25-26, 2008,
St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #5, July 13, 2008, St. Louis, Missouri, USA.
First Place; X Prepared Class; STL Region SCCA 2008 Solo Performance Specialties
Series Autocross Event #6, July 27, 2008, St. Louis, Missouri, USA.
Isuzuperformance Racing Team Nascar Style I-Mark Rear Sway Bar
For 1985-89 Isuzu I-Mark JT, Gemini JT150 and JT190.
Modular style rear sway bar adapts Nascar technology to import cars. Can be configured for various
rates between 9.8 lb/in to 384 lb/in in 25 even steps. The bar pictured is 12.4% stiffer than the
largest OEM bar available. Not for sale to the public.
Isuzuperformance Racing Team Bellett Brake Disks, Pads, and Shoes
For 1964-73 Isuzu Bellett GT and GT-R.
OEM reproduction disks turned from 80-55-06 Ductile Iron billet provide better wear and friction
properties than original cast rotors. Performance pads feature modern ceramic carbon compound for
excellent initial bite while minimizing rotor wear, for hot street and autocross use. OEM
reproduction rear brake shoes feature modern organic metallic compound with high friction
coefficient. Not for sale to the public.
Isuzuperformance Racing Team AL Series Coilovers
For 1990-93 Isuzu Impulse, Stylus, Gemini, Piazza, Geo Storm, Asuna Sunfire,
and 1985-89 Isuzu I-Mark and Gemini.
32 position compression and 32 position rebound adjustment. Ultra light all aluminum
body with anodized finish. Threaded lower bracket. Not for sale to the public.
Isuzuperformance Racing Team Front Camber Plate
For 1990-93 Isuzu Impulse, Stylus, Gemini, Piazza, Geo Storm, Asuna Sunfire
All aluminum construction. Unique design allows the spring to support the weight
of the vehicle, not the damper piston.
Provides 4 1/2 degrees of camber adjustment. Not for sale to the public.
Isuzuperformance Racing Team Front Camber Plate
For 1985-89 Isuzu I-Mark and Gemini.
All aluminum construction. Unique design allows the spring to support the weight
of the vehicle, not the damper piston.
Provides 4 1/2 degrees of camber adjustment. Not for sale to the public.
Isuzuperformance Racing Team Ferro-Carbon Clutch Disk
For 1990-93 Isuzu Impulse, Stylus, Gemini, Piazza, Geo Storm, Asuna Sunfire,
and 1985-89 Isuzu I-Mark and Gemini.
Ferro-Carbon composite friction material has the grip of ceramic, the wear characteristic
of organic.
Not for sale to the public.
Isuzuperformance Racing Team Polyurethane Suspension Bushing Sets
For 1990-93 Isuzu Impulse, Piazza, Stylus, Gemini, Geo Storm, and Asuna Sunfire.
Front Wheel Drive and All Wheel Drive.
Set of 18 polyurethane bushings with stainless steel center sleeves, and steel front
lower control arm bracket. Replaces all 16 suspension bushings of the vehicle, and
includes alternate two rear spindle lower bushings for AWD cars. Not for sale to the public.
Isuzuperformance Racing Team Front Lower Control Arm Bushings
Left: OEM. Right: Isuzuperformance Racing Team.
For 1990-93 Isuzu Impulse, Piazza, Stylus, Gemini, Geo Storm, and Asuna Sunfire.
Steel bushing bracket with polyurethane bushing and stainless steel center sleeve.
Just one of the eighteen bushings that make up the Isuzuperformance Racing Team
Polyurethane Suspension Bushing Set. Not for sale to the public.
Isuzuperformance Racing Team Polyurethane Differential Carrier Bushings
For Isuzu Impulse RS AWD Turbo and Isuzu Gemini JT191S Sedan and Coupe. True, solid
polyurethane differential carrier bushings with stainless steel center sleeves. 65%
stiffer than OEM. Eliminates movement of the differential assembly and rear drivetrain
sending more power to the ground. Not for sale to the public.
Introducing the Isuzuperformance Racing Team Isuzu Gemini Irmscher-R
JT191S AWD Turbo Sedan
Look for this vehicle at Redline Time Attack events in the eastern half of the US.
Isuzuperformance Returned to Japan for the 2007 Isuzu Owners Meeting
Isuzuperformance returned to Japan on May 31, 2007 through June 15, 2007, to attend the
2007 Isuzu Owners Meeting / All Japan Isuzu Meeting. While in Japan, Isuzuperformance
attended Round 2 of the Japanese LeMans Series at Fuji Speedway, toured Aquarius Motorsports
outside Kyoto, toured the Toyota Headquarters, Museum, and Assembly Plant, visited Isuzu
owners in Hokkaido and aquired a 1991 Isuzu Gemini JT191S Sedan, attended the Isuzu car
show in Kuragari, visited Isuzu owners in Yokohama, and toured the Open Road shop outside
Yokohama.
Isuzuperformance Racing Team JT0s Polyurethane Engine Mount Bushings
For 1.5 liter Non-turbo, 1.5 liter Turbo, and 1.6 liter DOHC Isuzu I-Mark, Chevrolet Spectrum, Asuna
Sunburst, Isuzu Gemini JT150 and JT190. Shown in 1.6 liter DOHC brackets. True, solid
polyurethane engine and transmission mount bushings with stainless steel center sleeves.
65% stiffer than OEM, 62% stiffer than OEM filled with silicone/urethane caulk. Eliminates
engine and transmission movement, wheel hop, and part throttle bucking, while putting
more power to the ground. Not for sale to the public.
Isuzuperformance Racing Team JT1s FF/FWD Polyurethane Engine Mount Bushings
For all 1.6 liter Isuzu Impulse, Isuzu Stylus, Geo Storm, and Isuzu Gemini JT191, with Manual
Transmission. FWD. True, solid polyurethane engine and transmission mount
bushings with stainless steel center sleeves. 65% stiffer than OEM, 62% stiffer than
OEM filled with silicone/urethane caulk. Eliminates engine and transmission movement,
wheel hop, and part throttle bucking, while putting more power to the ground. Not for sale to the public.
Isuzuperformance Racing Team JT1s AWD Polyurethane Engine Mount Bushings
For all 1.6 liter Isuzu Impulse RS and Isuzu Gemini JT191S, with Manual
Transmission. AWD. True, solid polyurethane engine and transmission mount
bushings with stainless steel center sleeves. 65% stiffer than OEM, 62% stiffer than
OEM filled with silicone/urethane caulk. Eliminates engine and transmission movement,
wheel hop, and part throttle bucking, while putting more power to the ground. Not for sale to the public.
Isuzuperformance Racing Team JT1s Polyurethane Transfer Case Bushing and Bracket
For all 1.6 liter Isuzu Impulse RS and Isuzu Gemini JT191S, with Manual
Transmission. AWD. Solid polyurethane transfer case bushing shown with Isuzuperformance Racing Team
bushing bracket. This bracket is 20% stronger than the OEM bracket. Not for sale to the public.
Isuzuperformance Racing Team Four Wheel Big Brake Kit
The brake setup that the AWD Impulse RS and Gemini Irmscher-R should have come with.
11 inch front slotted vented composite rotor, 10.75 inch rear slotted solid composite
rotor. Wilwood Dynalite Forged 4 Piston Billet Aluminum Front Calipers. Specifically
designed to handle track use on 450+ HP vehicles weighing 2,700 pounds. Requires 15
inch or larger wheels. Not for sale to the public.
Isuzuperformance Racing Team Adjustable Cam Sprockets
For 1989-93 Isuzu Impulse, Stylus, Gemini, I-Mark RS, Geo Storm and Lotus Elan with 1.6 liter DOHC
engines, turbo and non-turbo.
Left, 1.6 liter Non-turbo. Right, 1.6 liter Turbo.
All 6061 T6 aluminum, 18% lighter than stock. CNC machined to more exacting
tolerances than even original gears. The outside ring is coal blasted before being
hard anodized. The coal blasting gives the gear a textured surface for the belt to
hold on to. The hard anodizing makes the outer ring incredibly durable. Inner ring
polished to a mirror finish and clear anodized. 24 degrees of adjustment. Four
stainless steel studs are used to lock the gear in place to prevent any slippage.
Lineup "peg" holes provided for ease of belt installation. Not for sale to the public.
Isuzuperformance Racing Team Underdrive Pulley Sets
For 1989-93 Isuzu Impulse, Stylus, Gemini, I-Mark RS, Geo Storm and Lotus Elan with 1.6 liter SOHC and DOHC
engines, turbo and non-turbo.
Left, set of three for vehicles with power steering. Right, set of two for vehicles
with manual steering.
6061 T6 aluminum, polished to a mirror finish for beauty and anodized for
durability. Reduces rotating mass by 5.825 pounds. Accessory belts are
underdriven for further power gain. Crank pulley, power steering pulley, and
alternator pulley. Not for sale to the public.
Isuzuperformance Racing Team Rear Lower Tie Brace
Rear.
304 Stainless Steel. Completely eliminates flex in the rear suspension cross member. Not for sale to the public.
Isuzuperformance attended the 2006 Isuzu Owners Meeting on June 11, 2006. Highlights of the trip included
a visit to the Shrine at Ise, Suzuka Circuit, Mazda Museum and Assembly Plant in Hiroshima, Miyajima,
the Gerald Shop in Nagoya, Niimi Nankichi Memorial Museum, Handa City Library and Museum, Shiho Doll Museum,
Nissan Yokohama Engine Plant and Museum, Odaiba and Toyota Megaweb, Miraikan Museum, and the Meiji Shrine.
Isuzuperformance on track at Suzuka Circuit. Lap time: 3:32.
High Altitude Testing
May, 2004, the Isuzuperformance Racing Team conducts chassis and engine tuning tests
in a newly prepared 1991 Isuzu Stylus XS at Pike's Peak, Colorado, the site of the
"Race to the Clouds" Pike's Peak International Hill Climb, held annually in June.
Isuzuperformance Autocross Victories
Isuzuperformance has been campaigning a 1991 Isuzu Stylus XS driven by Bill Luton in
the D Street Prepared Class of the St. Louis Region of the Sports Car Club of America.
This car has been built for autocross competition using only Isuzuperformance parts.
The 2002 season has been particularly fruitful for the team, as they have taken first
place finishes in eight of the eleven races they have competed in this year. Victories
include:
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #3, April 7, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #4, April 21, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #6, May 12, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA Gateway To Nationals Divisional
Autocross Event, May 26-27, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #7, June 9, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #9, August 11, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #10, September 1, 2002, St. Louis, Missouri, USA.
First Place; D Street Prepared Class; STL Region SCCA 2002 Extreme Exhaust Champoinship
Series Autocross Event #11, October 6, 2002, St. Louis, Missouri, USA.
At the St. Louis Region SCCA 2002 Year End Banquet, Bill Luton will be awarded the trophy
for D Street Prepared Points Champion for the St. Louis Region, having taken double the
points of any other driver in that class and finishing ninth out of 350+ drivers in the
region for most points earned.
Isuzuperformance returns from Japan
Isuzuperformance attended the 2002 Gemini Owners Meeting in Okazaki Japan on June 2,
2002, toured the Isuzu factory at Fujisawa as well as the Eagle Sayama and Gerald
performance shops in Japan. We have returned, and will be putting an account of the
trip and the show on the Isupage and the IsuzuWeb websites.
Congratulations to IsuzuWeb Members for Carlisle 2002.
Congratulations to the members of the IsuzuWeb for their participation in
the 2002 Carlisle Custom Compact Power Jam/Custom Compact Nationals Show. For
the second year in a row, the IsuzuWeb was the only Isuzu car club
attending the show and again took more than its fair share of awards at the Custom
Compact Power Jam.
Member Eric Filion was awarded first place in the Asian Isuzu Storm/Impulse/Asuna
Mild class for his 1993 Asuna Sunfire.
Member Scott Aguilar was awarded second place in the European 2 Dr Sport
class for his 1991 Lotus Elan M100 SE.
IsuzuWeb members Dave Sammynaiken, Keith Zimmerman, Scott Aguilar, and Bill Luton also
competed in the NASA time trial/autocross racing event in their Isuzu cars, the only
Isuzu cars raced at the event that weekend.
For in-depth coverage of the event, check for a forthcoming writeup on the Isupage.
IsuzuWeb Lobbies for Model Isuzu Cars Modifiers Performance Systems, made by
the company that manufactures the Tech Deck collectable skate board models, has
announced that they are developping a line of modifiable model cars. They have asked
the public to suggest which makes and models of automobiles they should make, and post
opinions and suggestions on
their message board. The IsuzuWeb has been actively lobbying Modifiers to
make models of Isuzu cars, especially 83-89 Impulse, 85-89 I-Mark, and 90-93 Impulse,
Stylus, and Storm. We ask all Isuzu enthusiasts to help by lending their voice to back
our suggestions on the
Isuzu car suggestion thread.
Congratulations to IsuzuWeb Members for Carlisle 2001.
Congratulations to the members of the IsuzuWeb for their participation in
the 2001 Carlisle Custom Compact Power Jam. The IsuzuWeb was the only Isuzu car club
attending the show and again took more than its fair share of awards at the Custom
Compact Power Jam.
Member Eric Filion was awarded third place in the Asian Isuzu Storm/Impulse/Asuna
Mild class for his 1993 Asuna Sunfire.
Member Michael Gainey was awarded first place in the Asian Isuzu Stylus/I-Mark
Semi Wild class for his 1989 Isuzu I-Mark RS.
Member Bill Luton was awarded second place in the Asian Isuzu Stylus/I-Mark Semi
Wild class for his 1991 Isuzu Stylus XS.
For in-depth coverage of the event, check
The IsuzuWeb at
Carlisle, 2001.
Congratulations to IsuzuWeb Members for Carlisle 2000.
Congratulations to the members of the IsuzuWeb for their participation in the 2000
Carlisle Custom Compact Power Jam. The IsuzuWeb took more awards than any other Isuzu
enthusiast club at the Custom Compact Power Jam, and impressive six of twelve possible
awards.
Members Ron and Linda Annas were awarded second place in the Asian Stock All Years
class for their son's 1989 Isuzu Impulse Turbo.
Member John E. Addison was awarded third place in the Asian Stock All Years
class for his 1987 Isuzu Impulse RS.
Member Darren Ristich was awarded third place in the Asian Isuzu Impulse Storm Mild
class for his 1992 Geo Storm.
Member Bill Luton was awarded first place in the Asian Isuzu Stylus/I-Mark
class for his 1991 Isuzu Stylus XS.
Member Anthony Washington was awarded second place in the Asian Isuzu Stylus/I-Mark
class for his Isuzu I-Mark.
Member Scott Aguilar was awarded first place in the Other Exotic All
class for his 1991 Lotus Elan M100 SE.
For in-depth coverage of the event, check
The IsuzuWeb at
Carlisle, 2000.
Congratulations to IsuzuWeb Members for NOPI 1999.
Congratulations to the members of the IsuzuWeb for their participation in the 1999
NOPI MOtorsports Supershow.
Member Harold Walker was awarded third place for the Isuzu/Geo Conservative class
and member Bill Luton was awarded third place in the Isuzu/Geo Mild
Impulse/Storm class.
IsuzuWeb member Wendel Person was awarded second place for the Isuzu/Geo Mild class.
Well done.
For in-depth coverage of the event, check
The IsuzuWeb at
NOPI, 1999.
Congratulations to IsuzuWeb Members for Carlisle 1999.
Congratulations to the members of the IsuzuWeb for their participation in the 1999
Carlisle Custom Compact Power Jam.
Member Roby Kuniyoshi was awarded third place in the Isuzu/Geo Mild Non-Impulse/Storm
class and member Bill Luton was awarded third place in the Isuzu/Geo Mild
Impulse/Storm class.
In addition, the IsuzuWeb was awarded third place for club participation.
Well done.
For in-depth coverage of the event, check
The IsuzuWeb at
Carlisle, 1999.
Isuzuperformance Frequently Asked Questions.
We have compiled some of the most common questions we answer into a frequently asked
questions page in order to provide more information to our customers.
Isuzuperformance Dyno Testing.
In our ongoing effort to bring you the best performing products, we are conducting
DynoJet Dynamometer testing of many of our products and allowing their performance
to speak for itself.
Placing an order is quite easy. Simply print up a copy of the
Order Form
Page,
and mail it along with payment for the products you wish to purchase to:
Isuzuperformance / Bill's Inc.
8400 Craighill Dr.
St. Louis, MO 63123
USA
We accept checks and money orders. Make checks or money orders payable
to Bill's Inc.
Orders paid by money orders process most quickly and require no time to clear. Checks
can take up to 14 days to clear and orders paid by check can not be processed
until the check clears.
Concerning checks and money orders written from Canadian and overseas banks:
Please make absolutely sure that they are made payable in US Dollars. All checks
and money orders must be drawn from a bank with offices in the US. We can not
accept checks drawn from banks that do not have US offices. Checks and money orders
must have routing numbers so that they can be processed through the US office of
the bank. There is a $25.00 collection fee for each check and money order that
are drawn from banks which do not have US offices or that do not have routing
numbers to allow for processing through US offices.
We do not accept credit cards.
Credit card companies charge retailers 5% of each purchase to pay for the
use of that card, in addition to the fact that they do not make
payments with each card use, but rather in large lump sums. If Isuzuperformance
were to accept credit cards, we would have to raise our prices
significantly, and this would adversly affect your dollar's purchasing
power.
It would be a good idea if you would email us to let us know that
you are sending in and order to let us know what items we should be ready
to ship for you. We will email you if there is any problem with filling
your order.
In order to keep prices down, in most cases, we order the product from
the manufacturer or distributor after we recieve your order. This
way, we do not have money tied up in costly inventory and the storage of
that inventory, and we can pass those savings on to you.
Products may only be returned if the item is found to have a
manufacturer's defect. No returns will be made for any other
reason. No returns without prior authorization by Bill's.
Returned merchandise must be unused, unaltered, undamaged, and unmodified, in the
exact condition as it arrived to the customer and in the original packaging.
The purchaser is solely responsible to verify that the part that
they order will in fact fit and function on the vehicle that they
purchase the product for.
Any returned product must be unused, in it's original
packaging, accompanied by all enclosed warranty paperwork, and shipping
must be prepaid. Returned product will be repaired or replaced at the discretion of
Isuzuperformance or may receive store credit only at the discretion of Bill's, no refunds.
No packages shipped "postage due" or "cod" will be accepted for any reason.
Damage in shipment is not the responsibility of Isuzuperformance and in such
cases, the customer should contact the shipper immediately and file a
damage claim.
Isuzuperformance expresses no warranty beyond the warranty extended by the product
manufacturer and no Isuzuperformance employee or spokesperson has the right to extend or
imply any warranty upon any products.
All liability is limited to the part and Isuzuperformance is not responsible for any labor costs,
installation or removal costs, any related parts or any other parts damaged by the part
in question, or any other costs, damages, or expenses. Repair or replacement is at the
discretion of Isuzuperformance and only after the part in question has been returned freight prepaid
for inspection and only if inspection finds that the problem is with the product and not
caused by abuse of the product, improper installation, damage by the shipping agent, or
any other reason.
Bill's, it's owner, it's employees, etc. have no affiliation or
endorsement by or with Isuzu, Chevrolet, Geo, Lotus,or any other auto
maker.
The use of the aforementioned names and their associated emblems is
purely for informational and identificational purposes.
The use of some of the above listed products may affect the warranty
status of your vehicle or the vehicles emissions. The purchaser is solely
responsible for consulting their owners manual and the manufacturer of
their vehicle and the local and state authorities to check on these
concerns.
Some items sold by Isuzuperformance are for use only on show or race vehicles which are
never to be used on public roads or highways.
Bill's, it's owner, it's employees, etc. is not responsible for any
possible injury or damage caused by the use of the above listed
products. The purchaser assumes sole responsibility for this. Anyone
who is not mechanically inclined is strongly urged to seek a professional
to install the products which they purchase. Isuzuperformance does not offer
installation services, but we are happy to answer any questions, though
the purchaser assumes sole responsibility for their own actions based on
those answers.
Isuzuperformance is a wholely owned subsidiary of Bill's Inc.
Bill's, it's owner, and it's employees have no affiliation to
Isuzu Motors America, Inc. or Isuzu Motors, Ltd., Japan, Chevrolet,
General Motors, USA, Geo, Asuna, Opel or Lotus.
No affiliation or connection with, or sponsorship or approval by, Isuzu
Motors, General Motors, Chevrolet, Geo, Asuna, Opel, Lotus, or any other
automaker is intended or implied.
The word "Isuzu" is used purely to identify and describe the topic of
discussion, which is automobiles manufactured by Isuzu Motors, Ltd.,
Japan.
The words "Chevrolet", "Geo", "Asuna", "Opel" and "Lotus" are used
purely to identify the topic of
discussion, which is automobiles manufactured by Isuzu Motors, Ltd.,
Japan, for resale by Chevrolet, Geo, and Asuna.
The words "Impulse", "Piazza", "Storm", "Sunfire", "I-Mark", "Spectrum",
"Gemini", "Stylus", "Elan M100", "117 Coupe", "Aska", "Bellett",
"Bellel", "Kadett", "Trooper", "Rodeo", "Amigo", "Jackaroo", "Asso di
Fiori", and "Ace of Clubs". are used purely to identify the respective
topics of discussion, the model of automobile which the context refers
to.
The word "Isuzuperformance" is a registered trademark of Bill's.
All art work and logos used on the Isuzuperformance internet catalog website and
all related web pages
which are the property of Bill's Inc. are 100% original works of
art, created by the owner of Bill's, specifically for use on Isuzuperformance
internet catalog website,
and are copyrighted. Any similarity to any pre-existing logos is
purely coincidental, and is in no way construes any affiliation with any
organization or company which uses a similar image as their symbol.
Any attempt by any company or organization to censor or limit the
content of Isuzuperformance or the views expressed there in, will be met with
extreme opposition. Those taking such action should strongly consider
the service provided by the Isuzuperformance in popularizing Isuzu, Chevrolet,
Geo, Opel, Asuna, and Lotus products, and increasing the inherent resale
value of those products by aiding the owners of those products in keeping
their automobiles running in good working order and in aiding
those owners in performance tuning and customizing those automobiles to
enhance their enjoyment of those vehicles, the publics' perception of
those vehicles, and the overall popularity of those vehicles. By
supressing the Bill's, any group that would seek to limit or censor the
ISUPAGE would be directly damaging the reputation of Isuzu, Chevrolet,
Geo, Opel, Asuna, and Lotus, and damaging the public perception and
popularity of those companys' products.
Isuzuperformance reserves the right to publish, in part or whole, ALL
correspondences, legal or otherwise, concerning the content of any part
of or all of the Isuzuperformance. There will be no exceptions. By
contacting the owner or employees of the Bill's, the correspondor forfiets
any right to prevent the correspondee from publishing that correspondence.
