BHP at wheels?
14 March 2005, 05:28 PM
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BHP at wheels?
What does 210BHP at wheels equate to at the flywheel on a 03 WRX? Can torque figures also be taken at the wheels as opposed to flywheel?
15 March 2005, 12:19 PM
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Think I have cracked it - my best mate told me that to calculate flywheel HP on a scoob you multiply wheel HP by 1.7571 - therefore my WRX 03 is making a heft 369bhp at flywheel. Wow!!!! Only mod I have got is a Genome Sti back box - I,m chuffed to bits - what mod next I wonder - guess an air filter should get me over the 400 mark - TOTBIV here I come - be ready! 
15 March 2005, 12:23 PM
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Originally Posted by STi Blues
Think I have cracked it - my best mate told me that to calculate flywheel HP on a scoob you multiply wheel HP by 1.7571 - therefore my WRX 03 is making a heft 369bhp at flywheel. Wow!!!! Only mod I have got is a Genome Sti back box - I,m chuffed to bits - what mod next I wonder - guess an air filter should get me over the 400 mark - TOTBIV here I come - be ready!
I'd get your mate to re calculate if i were you
15 March 2005, 12:26 PM
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Yeah it is a JDM - make reckons that calculation is on the safe side - could even by more - multply by 1.843765 and you get over 387bhp at the flywheel. He also said that to calculate torque you multiply flywheel bhp by 1.3554 - that means my WRX 03 isrunning 524lb/ft torue - looks like I need a new clutch - any recommendations? 
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15 March 2005, 12:31 PM
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Originally Posted by STi Blues
Yeah it is a JDM - make reckons that calculation is on the safe side - could even by more - multply by 1.843765 and you get over 387bhp at the flywheel. He also said that to calculate torque you multiply flywheel bhp by 1.3554 - that means my WRX 03 isrunning 524lb/ft torue - looks like I need a new clutch - any recommendations?
15 March 2005, 04:50 PM
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Do you mean I could be getting even more torque than that? Could I install a clutch from say a diesel lorry - which is used to very high torque anyway? 
16 March 2005, 08:43 AM
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guess an air filter should get me over the 400 mark - TOTBIV here I come - be ready!
David
16 March 2005, 09:27 AM
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Thanks everyone - my original question was serious - I just had to elaborate to get a response - I am picking up a JDM 03 WRX on Friday and know it has been dyno'd at 210bhp at the wheels - just wondered whatthis was at flywheel so I could compare to my much loved MY97 Sti (300+ Bhp) which will be going.
I guess from comments I am in the 250/260 range.
Cheers
I guess from comments I am in the 250/260 range.
Cheers
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