Dont know if this is of any use to anyone but ive found this calculator although you do need a fair bit of info. But some one might like it. O and its in inches not mm lol. Ray Hall Turbocharging - TurboPower java calcultor CA Displacement - 1809cc Bore - 83mm Stroke - 83.6mm Compression - 9.5:1(DE) 8.5:1(DET) Horsepower - 135 HP @6400RPM(DE) 175 HP @6400RPM(DET) Torque - 115 ft/lbs @5200(DE) 166 ft/lbs @4000(DET) Average temp - 90 Specifications for the Red Top SR20DET Displacement: 1998cc (2.0 liter) Cam Type: DOHC 16 valve, chain driven cam sprockets Bore & Stroke 86mm x 86mm Compression: 8.5:1 Horsepower: 205ps @ 6000rpm Torque: 203 ft/lbs @ 4000rpm Stock Boost: 7 psi Throttle Body Bore: 60mm Injector Size: 370cc/min Turbo Specs: Compressor: T-25, 60 trim 56mm BCI-1 compressor. Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing. Center Section: Journal bearings Performance: The stock turbo will be safe to 13-15 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce 230-250 RWHP at safe boost. Specifications for the Black Top SR20DET Displacement: 1998cc (2.0 liter) Cam Type: DOHC 16 valve, chain driven cam sprockets Bore & Stroke: 86mm x 86mm Compression: 8.5:1 Horsepower: 205hp @ 6000rpm Torque: 203 ft/lbs @ 4000rpm Stock Boost: 7 psi Throttle Body Bore: 60mm Injector Size: 370cc/min Turbo Specs: Compressor: T-25, 60 trim 56mm BCI-1 compressor. Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing. Center Section: Journal bearings Performance: The stock turbo will be safe to 13-15 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce 230-250 RWHP at safe boost. Specifications for the S15 Black Top SR20DET (Found on the 99+ Silvia) Horsepower: 250ps @ 6000rpm Transmission: 6 Speed, Close Ratio Injector Size: 480cc/min Turbo Specs: Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing Turbine: Inconel turbine wheel. Cast divider wall between turbine discharge and wastegate. Center Section: Ball Bearing This engine is expensive and hard to get. If you are on a tight budget, please consider other options as the money you save from buying this engine can be better used to build up a really nice red top. Additions: 6 speed manual transmission. The 6 speed cannot be used on the S13 and S14 motors, and uses a different driveshaft. Speed sensor is located in the differential. The 6 speed is cool, but is not as strong as the 5 speed from the older cars. There is basically 6 gears inside the same housing that was designed to hold 5 gears. This makes the gears smaller and weaker, therby breaking more often.
1JZ Displacement : 2491cc Type : Twin Turbo Inline 6 Cyl Valvetrain : Belt driven DOHC, 4 valves per cylinder Fuel System : TCCS EFI, Premium Unleaded Ignition System : Direct fire ignition Combustion Chambers : Pent Roof Compression Ratio : 8.5:1 Bore x Stroke : 86 x 71.5 Peak Power : 280PS (206 kW) @ 6200rpm Peak Torque : 37.0 kgm (268 lb ft, 363 Nm) @ 4800rpm Fuel Consumption : 210 g / PS*h @ 2000 rpm Dimensions (LxWxH) : 860 x 670 x 665 mm (MTM) : 845 x 670 x 665 mm (ATM) Weight (complete) : 217kg Turbos : CT12A (2x) Compressor wheel : 37/54mm Turbine wheel : 52/42mm Boost : 0.60-0.69kg/cm2 (8.5 - 9.8psi)
