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The mkiv Supra Owners Club

Torque - better on the Supra than other cars?


jeremyh

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Hi all,

 

I'm Jez, from Kent, and am looking to buy a TT sometime early next year. Currently I'm driving an 8-valve Fiat Punto Mk2 with 58bhp and have never driven any kind of sports car in my life :rolleyes:

 

What I was interested in knowing is not what I could beat on the motorway (I'm guessing pretty much everything) but how much higher/better the torque is on a TT than any average car, say Civic or Celica.

 

Does the level of torque go hand-in-hand with BHP?

 

Look forward to posting some more on this great forum :)

 

Jez

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racing on the highway is not something you base on buying a new car on to be honest, but to answer part of your question then the Supra has an in-line 6 cylinder engine which provides plenty of torque. Compared to a lot of other cars which stick to 2L 4 cylinder engines.

You tend to find that with the twin turbo engines that the torque figure follows the BHP figure close to a linear fashion. ie double the BHP and you're more or less doubling the torque figure.

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Views above is what I have noticed aswell.. The in-line 6 cylinder on a TT has only a tiny value below its BHP figure compared to other engines such as the 4 cylinders and I think even the V6's the inline 6 has the better figures..

 

On my dyno the figures were almost identical.

 

Performance:

440 BHP @ 5624 RPM

434 ft/lb @ 4310 RPM

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how much higher/better the torque is on a TT than any average car, say Civic or Celica.

 

Does the level of torque go hand-in-hand with BHP?

 

Look forward to posting some more on this great forum :)

 

Jez

 

The question you ask is impossible to answer as each engine will have been built for a specific application and it's power characteristics developed according to the designers brief.

 

The engineers who built the V8 for the XK8 were aiming to achieve different goals than those engineers building the 2JZ GTE.

The Supra engine just would not work in the XK8, the buyers of XK8's would hate it.

 

Torque and bhp do go hand in hand, they are both related.

 

The equation looks like this

 

bhp = 2 x Pi x torque(ftlbs) x rpm divided by 33000

 

Since 2 xPi is a constant this can be shortened to

 

bhp = torque x rpm divided by 5252

 

torque = bhp x 5252 divided by rpm

 

If you have one value you can calculate the other and both bhp and torque will be the same at 5252 rpm.

 

If you look at a dyno / rolling road printout you will see both lines cross at around 5252 rpm. ;)

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  • 4 months later...

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