Toyota MR2 Message Board - View Single Post

Roman · 07-31-2006, 07:05 AM

Hey WFX, do you have MSN?

The torque output at the wheels is a direct result of wheel size, final drive ratio, gear ratio, transmission losses, and engine torque.

Transmission losses... who cares, power @ the wheels is the only thing that matters

However since the engine torque is multiplied by a factor corresponding to the combination of rolling radius of the wheels, gear ratio and final drive ratio, you need to divide the torque at the wheels by this amount again, to get the correct torque/HP figure.

For example, some MR2 owner here was claiming that their NA sw20 output 600nm of torque, more than a lambourghini, haha. However when you divide that number by the final drive ratio, multiply it by the gear ratio, it became a bit more sensible, haha.

I know that some people assume that 4th gear is a straight 1:1 ratio, however this isnt the case on most FWD transaxles

07-31-2006, 07:05 AM	#15 (permalink)
Roman Beams OCD Support Group Join Date: Feb 2006 Location: Auckland, NZ Posts: 713 Thanks: 23 Thanked 49 Times in 30 Posts My Google Map iTrader Rating: (2/100% )	Hey WFX, do you have MSN? The torque output at the wheels is a direct result of wheel size, final drive ratio, gear ratio, transmission losses, and engine torque. Transmission losses... who cares, power @ the wheels is the only thing that matters However since the engine torque is multiplied by a factor corresponding to the combination of rolling radius of the wheels, gear ratio and final drive ratio, you need to divide the torque at the wheels by this amount again, to get the correct torque/HP figure. For example, some MR2 owner here was claiming that their NA sw20 output 600nm of torque, more than a lambourghini, haha. However when you divide that number by the final drive ratio, multiply it by the gear ratio, it became a bit more sensible, haha. I know that some people assume that 4th gear is a straight 1:1 ratio, however this isnt the case on most FWD transaxles Last edited by Roman; 07-31-2006 at 07:22 AM.