ISUZU I-MARK MODIFICATIONS BODY MODIFICATIONS Suspension Isuzuperformance Racing Team Al Series Front Coilovers. Fully Threaded, Adjustable Lower Spring Perch, Double Adjustable for Dampenning and Rebound. Isuzuperformance Racing Team Front Camber Plates. 90-91 Series Front Lower Suspension. AVO Adjustable Dampening Rear Shocks. Isuzuperformance Rear Lowering Springs, Tarmac Grade. Isuzuperformance NASCAR/Nextel Cup Rear Sway Bar. Brakes Isuzuperformance Four Wheel Disk Brake Conversion. Isuzuperformance Endurance Brake Kit Caliper Conversion. Isuzuperformance Four Pot Front Calipers on 9.8 inch Vented Rotors. Isuzuperformance Four Pot Rear Calipers and 10.7 inch Disk Brakes. Isuzuperformance Brake Master Cylinder with Adjustable Rear Brake Bias Valve. Wheels and Tires OEM Wheels. For Autocross, Khumo Victoracer 205/50/15 Tires on Volkk TE37 15x7 Wheels. For Drag Racing, Mickey Thompson 22.0x8.0-15 ET Drags on Volk TE37 15x7 Wheels. Steering Geo Spectrum Manual Steering Rack Swapped for Power Rack. Modified to fit 90-91 Front Lower Suspension. Weight Reduction Interior Stripped. Power Steering Rack and Pump Removed. AC Compressor and Condenser Removed. Body Work Removed Faux Driving Lights. 1989 Geo Spectrum Grille, Customized. Geo Spectrum Side View Mirrors. Rolled Fenders. Lighting Koito Gemini Clear Corner Lights. Isuzuperformance Projector Headlamp Conversion. ENGINE MODIFICATIONS Engine 90-91 Series 4XE1 Engine with Solid Lifters, Larger Water Pump, Larger Oil Pump, and Oil Cooler. Exhaust Isuzuperformance 2 1/2 inch Catalytic Converter. Stan's Headers / Isuzuperformance 2 1/2 inch diameter Performance Exhaust System Two Muffler System. Computer 1991 Wiring Harness and Computer System Custom Adapted to I-Mark RS Chasis and Electrical System. Ignition Magnecor KV85 8.5mm Red Competition Ignition Cables. Torque Master Spark Plugs. +4 HP. DRIVETRAIN MODIFICATIONS Engine and Transmission Mounts Isuzuperformance Racing Team Polyurethane Motor Mount Bushings. Differential Tracmax ATB Limited Slip Differential. Transaxle Clutch Specialties / Isuzuperformance Full Metal Plus Clutch. Fidanza Aluminum Flywheel. Lightenned and balanced by Isuzuperformance. Axles Hybrid Raxles Axles. INTERIOR MODIFICATIONS Interior Stripped. Controls Stick Shift Raised Two Inches. Seating For On Track Use: Momo Top Nascar Racing Seat. For Off Track Use: 1987-89 Geo Spectrum Driver's Seat, no other seats. Safety Simpson S2R Touring Car Helmet. Simpson Five Point Racing Harness. WAITING TO BE INSTALLED Stan's Headers / Isuzuperformance Tri-Y Exhaust Header. Tri-Coat Ceramic Finish. Isuzuperformance Racing Team Aluminum Pulley Set (Alternator and Underdrive Crank). Isuzuperformance Racing Team Polyurethane Suspension Bushings. Isuzuperformance / Iperformance Digital Fuel Injection System. FUTURE MODIFICATIONS Accel 300+ Digital Ignition System. Isuzuperformance Adjustable Fuel Pressure Regulator. Isuzuperforomance Anti Reversion Plate for Header. Volk TE37 15x7 and 15x4 narrowed wheels for Drag Racing. Isuzuperformance Nextel Cup Front Sway Bar. 1990-93 Nishiboric Rear Suspension. Custom Body Work to move fender lips out three-four inches (Wide Body). Custom Ten Point Roll Cage. Isuzuperformance "Red Head" Low Compression Racing Engine. 25 PSI Forced Induction, Details Undisclosed.
This vehicles was purchased to use for design and fabrication of
Isuzuperformance parts for the 85-89 I-Mark and Spectrum line of cars.
The vehicle was never intended to be put on the road but required state
registration and the expense of getting emissions exemptions for a car
that is not running well enough to perform those tests (just to get
license plates so it could be legally parked), has made this
vehicle too expensive to discard after product design is complete.
Therefore, this vehicle is being built into a dragster for product
promotion and advertising.
From 2003 through 2006, it saw some use in D Modified class Autocross racing,
finishing first in D Modified points in 2003.
The solid beam rear axle of the I-Mark and more primitive suspension design makes it
somewhat poorly suited for autocross, and autocrossing a car built for drag racing is
somewhat a lesson in futility, but it is an exciting little car to drive on course,
easily lifting both inside tires on hard turns, scaring corner workers, and functioning
as a very good training vehicle, forcing drivers to drive smoothly.
In 2008, the suspension was redesigned, and the car placed into X Prepared
class autocross racing. Idiosyncratic handling issues were reduced, but driving
the car on track remains just short of terrifying. Without fully sorting out all the
handling issues, the car saw some impressive success, finishing first in X Prepared
points in 2008 (second place was a $55,000 Lotus Elise Supercharged).
