Courtenay Sport / NITRON Vauxhall VX/R220 Track Racer Replica
Special Build Courtenay Sport/NITRON VX/R220
450PP Version
Sports Hard
CAR : Vauxhall VX220 '00
Tire : Sports Hard
Specs
Horsepower: 215 HP at 6500 RPM
Torque : 196.9 ft-lb at 4500 RPM
Power Limiter at : 99.7%
Weight: 875 kg
Ballast : 85 kg
Ballast Position : 9
Weight Distribution : 45 / 55 as real car spec
Performance Points:
450
GT AUTO
NO Oil change
Improve Body Rigidity (
NOT INSTALLED IN THIS BUILD )
Wheels : Stock
Car Paint : Sunlight Silver Metallic
Tuning Parts Installed :
Isometric Exhaust Manifold
Intake Tuning
High RPM Range Turbo Kit
Adjustable LSD
Fully Customizable Dog Clutch Transmission
Fully Customizable Suspension
Weight Reduction Stage 1
Suspension - NITRON Race 3 Way Coilover Kit
ERS Springs 500/550 ( Lowered )
Vauxhall Street/Track Alignment
Front, Rear
Ride Height: 89 89
Spring Rate 8.93 9.82
Dampers (Compression): 6 4
Dampers (Extension): 9 9
ARB 5 5
Camber Angle 0.1 1.6
( Front Camber Range : 0.1 +- 0.2, Rear Camber Range : 1.8 +- 0.2 )
Toe Angle 0.07 0.20
( Front Toe In Range : 0.00 +- 0.07, Rear Toe In Range : 0.36 +- 0.20 )
DOG CLUTCH TRANSMISSION - Vauxhall VX220 Turbo Getrag F23 (287) 5 Speed
Stock Final
Set Default
Set Final to
3.630
Set Auto Max Speed at 290kmh / 180mph
Adjust each gear :
1st 3.580
2nd 2.020
3rd 1.350
4th 0.970
5th 0.790
Set Final : 3.630
( OPTIONAL Courtenay Sport 4.170 Final for Getrag F23 )
LSD - 2 Way OS Giken Custom Built 25% Preload & Lock
Initial Torque : 17
Acceleration Sensitivity: 17
Braking Sensitivity: 17
Brake Balance:
5/5 ( personal BB) or for ABS 0 wheel : 5/5, for ABS 1 - feel free to use your preferred brake balance. I recommend to run 5/5.
Recommended setting for DS3 user :
Steering sensitivity at +1 or +2, all aids off, except ABS 1 ( if not comfortable with ABS 0 ) with 5/5 brake balance as starting point.
Notes :
This replica is based on a Courtenay Sport customer car, originally VX220 NA car modified with Z20LET engine transplant and Z20LEH K04 Turbo from Astra VXR offering better performance and reliability. The 450PP is limited in power to fit in the regulation FITT British Invasion Tuning Challenge.
The weight of the car is 875kg ( curb weight of NA VX220 ) with 45/55 weight distribution of NA car. Suspension has been upgraded with NITRON NTR Race Coilover 3 Way with ERS Springs at 500/550. The stiff springs and ratio are chosen based on well proven formula for track racer VX220 with sticky semi slick tires. The front springs are harder than usual this time, offering sharper steering with damper & ARB all around setup for balanced handling. Ride height has been lowered by about 2 inch from stock height, while the alignment is based on street / mild track duty range of values, and I used less rear toe in to give more play when at the track.
Transmission uses Turbo VX220 Getrag 5 Speed ratios and final. This offers much better spread for the added power and torque, giving nice pull without inherent wheelspin drama. Courtenay Sport also offer performance/track oriented Final Drive at 4.170, giving much quicker acceleration from 1st to 3rd gear at a cost of lower top speed.
LSD is based on OS Giken with custom job, torque preload set at 25% with 2 way setup, also 25% lock. This will give nice balance against suspension setup, while still giving good traction even on lower gear exit. Simply hammer the throttle when in doubt and let the rear kick a bit then the LSD will do it's job, just make sure to hold that steering wheel like a man.
The VX220 was tuned and tested at Brands Hatch Indy, Willow Springs, Tsukuba, Autumn Ring and Red Bull Ring. At Brands Hatch Indy, it managed 52.1s with ease on SH tire. Another run managed 51.8s on 2nd lap, with slower 20.1s 1st sector and slightly lower last turn at 58mph as I overloaded left front tires for a moment. I have provided both replay of the run for reference. A good run would yield 19s 1st sector - reaching 100mph at the top of the hill before braking for the right hairpin and maintain 60+mph on the last corner, this would translate at least mid 51s
EDIT : Fixed the max speed, incorrect value, was 300kmh, supposed to be 290kmh
Added additional notes for the 51s run and uploaded the replay