Why Is Torque Sooo Low On Gtst's

[Smurf]

The std torque is under 300nm on the R33 GTS25T. Why is it so low. I know the engine is only 2.5 litres though WRX's, Evo's and even Saab acheive alot more torque with smaller capacity engines.

If this is a stupid question just let me know.

Smurf out.

[zer0for0je]

Maybe because of the low compression pistions + not much airflow from the turbo?

[grigor]

Not a stupid question, more of half a question.

It's useless stating torque without its RPM.

Since BHP is a product of torquexRPM, high BHP engines must be still making reasonable torque, even at very high RPM. (F1 engine for example)

Or a 300BPH truck engine will have masses of torque but it will probably be at 1500rpm.

The Rb25 doesn't make loads of torque at 2000rpm, but its pretty consistant right up to 6000 with a very high BHP end result.

Regards.

[dojobi]

The std torque is under 300nm on the R33 GTS25T.  Why is it so low.  I know the engine is only 2.5 litres though WRX's, Evo's and even Saab acheive alot more torque with smaller capacity engines.

If this is a stupid question just let me know.

Smurf out.

<{POST_SNAPBACK}>

Nissan fixed that with their Neo engines in the R34. It was up to 363Nm by the end. It's just because they've got a very primitive form of VVT in the R33s I think. It's just on or off, not continuously variable. They also don't run as much boost as the WRX or Evo.

If you compare a 94 WRX to a 94 R33, it's closer. 270Nm for the WRX and 294Nm for the R33 - and the rex is running a lot more boost. Also, as grigor said, it makes that torque lower down the rev range.

Edited August 19, 2005 by dojobi