difference between usdm and jdm 2JZGTE

[jdizzle318]

i was wondering what the main differences between the usdm and jdm versions of the 2JZGTE are since one has 40 more hp any anwsers would be greatly appreciated

-jd

[toyosupra_87]

http://i-supra.com/eve/forums/a/tpc/...1/m/3926067711

Japanese Market Supra Twin Turbo -vs.- U.S. spec Supra Twin Turbo

Engine Specs
Model: (Japan Spec.) / U.S. Spec
Horsepower: (280hp@5600) / 320 hp
Torque: (318ft/lb@3600) / 315 ft/lb
Injectors: (430 cc) / 540 cc
Injector Impedance: (High Impedance) / Low Impedance
Inlet Cam Duration: (224 deg) / 233 deg
Inlet Cam Lift: (7.8mm) / 8.25mm
Airflow Measurement: (MAP sensor) / Mass-Airflow sensor
Turbos: (CT12B Japanese) / CT12B U.S.
Turbine Size: (60mm/48mm) / 52mm/44mm
Compressor Size: (62mm/39mm) / 58mm/39mm
Turbine material: (Ceramic) / Steel
Scroll area (mm^2): (600) / 740
A/R ratio: (0.42) / 0.53

Japanese Spec ¼ mile Performance:
14.0 @ 101mph

U.S. Spec ¼ mile Performance:
13.6 @ 106mph

Differences in features (U.S., Japan, Europe):
-Retractable Front Spoiler (Japan, Europe)
-Glass Lense Headlamps (Europe)
-Reverse lamp in different location on tail lamps (Europe)
-Analog Clock (Japanese later models?)
-Headlamp washers (Europe)
-No side lamps on bumpers (Europe)
-Side Lamp on fender (Europe)
-Hood Scoop for cooling turbos (Europe)
-Rear External Differential Fluid Cooler with fluid pump (Europe)
-Twin Automatic Transmission Coolers (Europe)
-6N0 Gray Exterior Color (Japan)
-756 Yellow Exterior Color (Japan)
-5 Gauge Dash
-Right Side Drive (Japan, Some Europe)

Mike T
94 Supra TT 6spd
"Silly ricer, synchros are for kids"

[jdizzle318]

thanks man thats helps out alot i want to put a 2jzgte in my sc and usdm ones are a bitch to find so ill prolly have to go with the jdm motor and i plan to replace the turbo system etc. so it shouldnt be that big of a deal anyway

-jd

[willtotheumm]

dang we have a lot more ponies but they beat us by a few ft/lbs. Arent the JDM ones limited to the Japan regulated limits? Isnt it 280?

[Nick 95 6sp]

I thought that the 280 hp for the JDM Supra was either a "gentleman's aggreement" or maybe even a law in Japan, that no car would have over 280 hp, so guess what, the Supra has 280 hp, the Skyline has 280 hp. In reality, the power was very close to USDM Supras though with some "significant" mechanical/elect differences as nicely outlined above.

Once you start moding and increasing boost well above stock, the JDM ceramic turbos are more delicate and with smaller injectors, if you can't flow fuel you can't flow air so less max power from stock fuel system.

[Jeeves]

The 280ps was a gentlemans agreement, but beyond that it was nothing. Stock numbers on GTR's and Supra's often surpassed the 280 mark, it was only listed as such so that marketing didn't turn into a sheer hp contest.

From Wiki:

A now-defunct agreement between the major Japanese auto manufacturers to limit the maximum advertised engine power of their cars to 280 PS (206 kW or 276 hp).