CarX Builder
C3

Touge · RWD

SI4 C3 Touge 2JZ Swap

SI4 (Nissan Silvia (S14))

by Rev · published on 14/11/2026 · 17 views

Use as a base

272

Power

1090

Weight

290

Max speed (aero drag)

Inputs

Values used for the calculation

The car data entered for this build. Enter the same values to get the same setup on your car.

Engine

Power (HP)
272
Rev limiter (rpm)
7000
Low torque (Nm)
267
Mid torque (Nm)
237
High torque (Nm)
193
Turbo pressure (bar)
0.6
Fuel
Sport
Peak power (HP)
272 @ 6500 rpm
Peak torque (Nm)
412 @ 4000 rpm
Powerband (dyno)
4750 – 7000 rpm

Chassis

Weight (kg)
1090
Front weight balance (%)
60
Center of mass height (inches)
9.2
Wheelbase (m)
2.586
Front track (m)
1.54
Rear track (m)
1.53

Tires

Front tires
265/40 R16
Rear tires
265/40 R16
Front tire grip (index)
1.08
Rear tire grip (index)
1.08

Aero

Drag coefficient (Cx)
0.27
Air Resistance (Sx)
2.04
Front downforce (kg)
41
Rear downforce (kg)
46

Gearbox

Number of gears
6
Default final drive (ratio)
3.7
Default last gear (ratio)
0.8
Gear spacing
Standard

Spec sheet

Installed parts

Engine

JZ2-GT · swap

  • Block BLC1 Sport
  • Camshaft CSH [P] High torque : 193 N·m Prototype
  • Cylinder head HCE [P] Mid torque : 237 N·m Prototype
  • ECU Leave stock Stock
  • Exhaust EXS1 Street
  • Exhaust manifold EXM3 Racing
  • Fuel system Leave stock Stock
  • Intake manifold Leave stock Stock
  • Turbo Leave stock Stock

Gearbox

T50S

  • Gearbox Leave stock Stock
  • Clutch CLH [P] Prototype
  • Differential Leave stock Stock
  • Drivetrain Leave stock Stock

Body

Stage 4

  • Weight reduction Weight reduce [P] Prototype
  • Body strengthening Body strengthening ST5 Elite
  • Front aero Front aero [P] Prototype
  • Rear aero Rear aero [P] Prototype
  • Fuel tank Leave stock Stock

Suspension

  • Front springs F_SS [P] Prototype
  • Rear springs R_SS [P] Prototype
  • Front shocks F_S [P] Prototype
  • Rear shocks R_S [P] Prototype
  • Front anti-roll bar F_SB [P] Prototype
  • Rear anti-roll bar R_SB [P] Prototype
  • Front arms F_ARM [P] Prototype
  • Rear arms R_ARM [P] Prototype
  • Brakes BR [P] Prototype

Wheels

  • Front rims 265/40 R16 Sport
  • Rear rims 265/40 R16 Sport
  • Front tires Racing Racing
  • Rear tires Racing Racing
  • Front spacers W +0.1 Ultimate
  • Rear spacers W +0.1 Ultimate
  • Tyre compound Racing+ Racing
01

Transmission

Final drive 2.77
Gear 1 3.25
Gear 2 2.3
Gear 3 1.91
Gear 4 1.6
Gear 5 1.33
Gear 6 1.11

Gear ratios and final drive calculated by the Build Lab for this discipline.

02

Differential

Accel lock 0.32
Decel lock 0.16
Preload 185Nm

Values computed for your car and kept within the sliders of your differential (a Clutch 65 if none is declared).

Differential part not declared: values computed and bounded for a Clutch 65 (locks 0 to 1, preload 0 to 520 Nm). With a Clutch [P], sliders go from 0.6 to 1 (acceleration), 0.3 to 1 (coast) and 0 to 100 Nm. With a Clutch 45, from 0.2 to 0.8 and 0 to 315 Nm. Ranges with every tuning step purchased. Declare your part in the form for values you can surely set.

Stability first: the rear must never let go before the front. Preload keeps the inner wheel from spinning over a bump at the throttle you hold through a typical corner (computed from aero and tyre drag) and keeps the lock smooth between throttle and lift-off. Acceleration lock adds only what is still needed so the inner wheel doesn't spin up to 60 % of your lateral grip: on a rear-wheel drive car, more would push the rear out (in-game hint). Coast lock is half the acceleration lock (1.5-way), gentle so the car doesn't rotate when slowing down.

03

Suspension

Front

Stiffness 85kNm
Edited Calculated : 101.5 kNm
Suspension travel 91.8mm
Anti-roll bar 55kNm
Edited Calculated : 71 kNm
Slow bump 8122
Fast bump 4010
Slow rebound 11588
Fast rebound 5762

Rear

Stiffness 105kNm
Edited Calculated : 82.8 kNm
Suspension travel 100.6mm
Anti-roll bar 50kNm
Edited Calculated : 30.9 kNm
Slow bump 5927
Fast bump 2982
Slow rebound 8533
Fast rebound 4241
04

Steering, camber & toe

Caster 5.15°
Steering angle 53.63°
Ackermann 66.98%
Braking 85% AV
Front camber under load estimated -4.37°

Car resting on its wheels, standing still (static load, no roll or load transfer). In game, set -6.62° in the garage.

Front camber (garage setting) -6.62°
Rear camber under load estimated -1.17°

Car resting on its wheels, standing still (static load, no roll or load transfer). In game, set -4.12° in the garage.

Rear camber (garage setting) -4.12°
Front toe 0°
Rear toe 0°
05

Aerodynamics and weight reduction

Front downforce 41kg
Rear downforce 46kg
Drag coefficient (Cx) 0.27
Frontal area (Sx) 2.04m²
Mass towards the front 59.95%
Mass height 19.54%
Body mass 678kg
06

Brakes and tyres

Max brake torque 5850N·m
Front tyre pressure 3bar
Rear tyre pressure 3bar
07

Gearbox: extras

Reverse gear 3.58
Shift delay 0.04s
Transmission loss 0.02
Calculation details & input data

Theoretical top speed

278.6 kph

Max speed (aero drag)

289.7 kph

Powerband

4750 → 7000 rpm

Gear 123456
Top speed per gear (km/h) 95135162193233279
Power
272 hp
Weight
1090 kg
Class
C3 (249.5 HP/t)
Front balance
60 %
Rev limiter (rpm)
7000
Wheelbase (m)
2.586 m
Center of mass height (inches)
9.2 inches
Front
265/40 R16 · 1.08
Rear
265/40 R16 · 1.08
Front/rear frequencies
2.5021509516222 / 3.3387166389979 Hz
Target roll gradient
0.071°/g · TLLTD 52.4 %
Engine curves

You may also like

Full gallery →

Build your own setup

Gearbox, differential, suspension and alignment computed for your car and discipline. In under 2 minutes.

Create my account

Build Lab · New

Pick a car and a class. Get the whole build.

Engine, parts and every setting, computed for you from a class and a driving style. No dyno screenshot needed.

Build my car for free

One Build Lab build free on every account.

See how it works

CarX Street touge tune: gearbox, suspension and differential