Engine; Racing Pistons
Shipping charges are based on Continental US (48 States) rates unless
otherwise noted. Shipping
outside this area will be calculated on a case by case basis.
Isuzuperformance has arranged for the manufacture of custom pistons from several
noted manufacturers. We have provided castings, measurements, clearances, and
specifications to these manufacturers for use in providing product to
Isuzuperformance. These manufacturers will not provide product built to our specifications
to anyone but us, which is why these products can not be purchased directly from these
manufacturers or through other dealers or retailers.
Isuzuperformance has provided castings to these manufacturers for use in
manufacturing dome profiled pistons for Isuzuperformance. Dome profiling matches
the profile of the piston crown to the profile of the combustion chamber which ensures the
tightest tolerances and clearances between the piston and the combustion chamber and a
piston crown shaped specifically to promote full and complete combustion. This
results in maximum compression, flame propagation and optimum volumetric efficiency.
This aspect of these products is also available only through Isuzuperformance.
"But I can buy pistons from so and so, why the pistons you offer so special?", you
might ask. Without going through the required work and engineering to design a true
dome profiled piston, manufacturers may be able to offer a custom piston which they
believe to be within 10% of the compression ratio you are asking for, and they will
conservatively oversize the valve releifs in the tops of the pistons, taking much needed
volume away from the crown. What does this mean to you? Less power output from your
engine due to poorer flamoe propogation and less efficient combustion. You're building
a racing engine with racing pistons, do you really want to guess what compression ratio
you will end up with or squander potential power by not using the best pistons available,
or do you want to build your engine with confidence that you have used nothing but the
best?
Please Note: Regarding 1990-91 1.6 liter DOHC engines, pistons for 4XE1 Non-Turbo
engines are not interchangable with pistons for 4XE1 Turbocharged engines. The OEM
Turbo pistons use a larger wrist pin and a larger connecting rod to accomodate that larger
wrist pin. Those desiring to build a Non-Turbo block for use with a turbocharger must
either select a custom piston with the smaller wrist pin for use with their original rods
or if they desire to use the Turbo pistons, must also replace the connecting rod with a
Turbo connecting rod to accomodate the larger wrist pin.
- Ross Racing Pistons
Custom Pistons
Ross Racing pistons are forged aluminum pistons made from 2618-T61 aluminum alloy and
machined to exact tolerances using the most current CNC technology.
The highest quality is insured through numerous inspections throughout the machinging
process, each inspection to make certain of the highest quality of ring grooves, pin
straightness, and parallelism of the deck to the skirt.
This guarantees the best ring seal possible and results in peak efficiency and
performance and quality that is unmatched.
You must indicate desired compression ratio, bore, the type of piston rings you intend to
use, how much the head and block have been milled, camshaft specifications (if anything
other than stock), crankshaft stroke, rod length, and any other specific changes made to
the engine block and head that would change the clearances and tolerances of the engine
internals or the design of your pistons. This will insure that we provide you with
pistons to exactly match your requirements.
Pin fitting included.
Indicate if application is to use turbo, supercharger, or nitrous induction.
Oil supporters available at an additional charge, please email for details.
Supplied with Ross Racing Rings, which are molybdenum inlaid and barrel lapped for long
life and quick seating. Made of ductile SG iron and can be twisted 180 degrees numerous
times without fracturing. Top rings are zinc phosphate coated to improve initial scuff
resistance and add corrosion resistance. Second rings are zinc phosphate coated, cast
iron with reverse torsional twist, bevelled on the inner lower edge. Comformable to
cylinder wall, wear resistant, and sized to maximize downward oil scraping and upward
scraping. Oil rings are three piece circumfrential with stainless steel expander and
two chromium plated carbon steel rails. Less radial depth for better conformability.
15 degree angle on rail supports and enhanced side rail pads further improve sealing.
Pistons can be ordered without rings or with other manufacturer rings, email for details.
- 1989-91 1.6 liter 4XE1 DOHC Non-turbo engine
1989-91 Geo Storm GSi, 1990-91 Isuzu Impulse XS, 1990-91 Isuzu Stylus XS, 1989 Isuzu I-Mark RS
- Custom Pistons with Standard Chrome Moly Pins, .150 Wall, Ross Racing Rings
Designed for naturally aspirated engines to work with most street and racing applications.
PN ROSSCP1.6DOHCNAS................$829.00
Suggested Retail: $1105.00
- Custom Pistons with 4340 Chrome Moly Taper Wall and Special Alloy Pins, Ross Racing Rings
Designed for high horse power engines using power adders such as nitrous (250+HP),
turbochargers and superchargers (10+PSI boost), and high compression (13 to one or higher).
PN ROSSCP1.6DOHCNAS................$899.00
Suggested Retail: $1209.00
- We do not currently plan any other engine applications unless a customer were
interested in buying a minimum quantity of 5 sets of pistons for the application or
were willing to pay a $1,500.00 engineering fee to develop that application.
Shipping of piston sets is via UPS Ground and costs are as follows: Continental
US, $17 per set; Canada, Alaska, and Hawaii, $23.00 per set; Outside US and Canada,
Email for cost.
Wiseco Pistons
Custom Pistons
Custom Pistons sold only in sets of four.
Wiseco pistons are the only custom pistons available that are forged in house, in the US,
at their facility in Ohio. Wiseco supplies pistons for Formula One, Winston Cup, and Pro
Stock racing teams as well as pistons resold by companies like Race Engineering, Endyme,
and AEM.
Forgings are made form either 4032 high silicon aluminum alloy, which offers better wear
and lighter weight for high power naturally aspirated applications, or 2618 low silicon
aluminum alloy, which is stonger for turbo and nitrous applications.
Wiseco Advanced Engineering Center utilizes the latest in computer design technology, finite element analysis, and data
from our in-house dyno facilities to create, model, and test the latest designs. Quality begins with a forging specifically
designed for an individual engine, with the most advanced forging capabilities in the world. Wiseco starts with certified
extruded bar stock in a variety of alloys chosen for their strength and durability in the harshest of environments. The
latest in CNC machining centers and stringent quality control procedures insure that each and every Wiseco piston is
built to tight tolerances.
Chrome Moly pin with 4 mm thick walls and chrome plated, pin fit included.
You must indicate desired compression ratio, bore, the type of piston rings you intend to
use, how much the head and block have been milled, camshaft specifications (if anything
other than stock), crankshaft stroke, rod length, and any other specific changes made to
the engine block and head that would change the clearances and tolerances of the engine
internals or the design of your pistons. This will insure that we provide you with
pistons to exactly match your requirements.
Indicate if application is to use turbo, supercharger, or nitrous induction.
Supplied with Wiseco/Nipon Rings, imported from NPR of Japan (Federal Mogul's sister
company), by Wiseco and resold by such companies as Arias, Top Seal, and Ross.
XX High Tension or XC Standard Oil Rings included, depending on application.
- 1989-91 1.6 liter 4XE1 DOHC Non-turbo engine
1989-91 Geo Storm GSi, 1990-91 Isuzu Impulse XS, 1990-91 Isuzu Stylus XS, 1989 Isuzu I-Mark RS
- Custom Pistons with Standard Chrome Moly Pins, and Wiseco/Nipon Rings
Designed for naturally aspirated engines to work with most street and racing applications.
Sold only in sets of four pistons.
PN WISECP1.6DOHCNAS................$799.00
Suggested Retail: $1281.00
- 1.6 liter 4XE1 DOHC Turbo engine
1991 Isuzu Impulse RS, 1989-94 Lotus Elan SE
- Custom Pistons with Standard Chrome Moly Pins, and Wiseco/Nipon Rings
Designed for turbocharged engines to work with most street and racing applications.
Sold only in sets of four pistons.
PN WISECP1.6DOHCTUS................$799.00
Suggested Retail: $1281.00
- 1.8 liter 4XF1 DOHC Non-turbo engine
1992-93 Isuzu Impulse XS, Isuzu Stylus RS, Geo Storm GSi
- Custom Pistons with Standard Chrome Moly Pins, and Wiseco/Nipon Rings
Designed for naturally aspirated engines to work with most street and racing applications.
Sold only in sets of four pistons.
PN WISECP1.8DOHCNAS................$799.00
Suggested Retail: $1281.00
- We do not currently plan any other engine applications unless a customer were
interested in buying a minimum quantity of 5 sets of pistons for the application or
were willing to pay a $2,500.00 engineering fee to develop that application.
Standardized Racing Pistons
We have selected several of the more common piston sizes and designated them as standardized
pistons which we intend to keep as shelf stock. These are available in sets of four at a
savings compared to custom pistons.
Wiseco pistons are the only custom pistons available that are forged in house, in the US,
at their facility in Ohio. Wiseco supplies pistons for Formula One, Winston Cup, and Pro
Stock racing teams as well as pistons resold by companies like Race Engineering, Endyme,
and AEM.
Forgings are made form either 4032 high silicon aluminum alloy, which offers better wear
and lighter weight for high power naturally aspirated applications, or 2618 low silicon
aluminum alloy, which is stonger for turbo and nitrous applications.
Wiseco Advanced Engineering Center utilizes the latest in computer design technology, finite element analysis, and data
from our in-house dyno facilities to create, model, and test the latest designs. Quality begins with a forging specifically
designed for an individual engine, with the most advanced forging capabilities in the world. Wiseco starts with certified
extruded bar stock in a variety of alloys chosen for their strength and durability in the harshest of environments. The
latest in CNC machining centers and stringent quality control procedures insure that each and every Wiseco piston is
built to tight tolerances.
Chrome Moly pin with 4 mm thick walls and chrome plated, pin fit included.
Standardized 1/2 mil overbore pistons.
Supplied with Wiseco/Nipon Rings, imported from NPR of Japan (Federal Mogul's sister
company), by Wiseco and resold by such companies as Arias, Top Seal, and Ross.
XX High Tension or XC Standard Oil Rings included, depending on application.
- 1989-91 1.6 liter 4XE1 DOHC Non-turbo engine
1989-91 Geo Storm GSi, 1990-91 Isuzu Impulse XS, 1990-91 Isuzu Stylus XS, 1989 Isuzu I-Mark RS
- Standardized Pistons with Standard Chrome Moly Pins, and Wiseco/Nipon Rings
Designed for naturally aspirated engines to work with most street and racing applications.
Standardized 1/2 mil overbore pistons.
- 1.6 liter 4XE1 DOHC Turbo engine
1991 Isuzu Impulse RS, 1989-94 Lotus Elan SE
- Custom Pistons with Standard Chrome Moly Pins, and Wiseco/Nipon Rings
Designed for turbocharged engines to work with most street and racing applications.
Standardized 1/2 mil overbore pistons.
PN WISESP1.6DOHCTUS8.8:1................This product is currently unavailable
Suggested Retail: $1281.00
Shipping of piston sets is via UPS Ground and costs are as follows: Continental
US, $17 per set; Canada, Alaska, and Hawaii, $23.00 per set; Outside US and Canada,
Email for cost.
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