Toyota MR2 Message Board - View Single Post

IDon'tKnow · 09-18-2009, 01:53 PM

That is an interesting possibility; just throwing the .725 into the c50 I've got. Probably the least expensive solution at least.

Using the .725 5th gear in a C50 would give 72.4mph @ 3,000rpm; 4k would be 96.5mph. At least that's what this calculator gives me. I'm not sure I trust it. It says that the C50 is geared to top out at 150+mph.

I think I'd prefer to punch these numbers myself. I'll look around for the equation in a few minutes.

Theoretically I think the ideal transmission choice for a powerful daily driver AW11 would be a C60 on the C50 or C52 bell housing with a C50 ring and pinion, 1st, & 2nd gear (would look like this).

First and Second gear would be more wheel spin friendly although 2nd wouldn't be best for exiting corners slower than 40mph. Third, Fourth, & Fifth would be nice and short for roll on acceleration and keeping the engine at the peak of the power band all the way into the 6th gear upshift; the 2/3, 3/4, & 4/5 upshift would each only drop the RPM's by 1500.

I assume the only way to find out if this is a viable option would be to pull them both apart and give it a try.

09-18-2009, 01:53 PM	#5 (permalink)
IDon'tKnow but I can find out. Join Date: Sep 2009 Location: DC Posts: 392 Thanks: 6 Thanked 6 Times in 5 Posts iTrader Rating: (1/100% )	That is an interesting possibility; just throwing the .725 into the c50 I've got. Probably the least expensive solution at least. Using the .725 5th gear in a C50 would give 72.4mph @ 3,000rpm; 4k would be 96.5mph. At least that's what this calculator gives me. I'm not sure I trust it. It says that the C50 is geared to top out at 150+mph. I think I'd prefer to punch these numbers myself. I'll look around for the equation in a few minutes. Theoretically I think the ideal transmission choice for a powerful daily driver AW11 would be a C60 on the C50 or C52 bell housing with a C50 ring and pinion, 1st, & 2nd gear (would look like this). First and Second gear would be more wheel spin friendly although 2nd wouldn't be best for exiting corners slower than 40mph. Third, Fourth, & Fifth would be nice and short for roll on acceleration and keeping the engine at the peak of the power band all the way into the 6th gear upshift; the 2/3, 3/4, & 4/5 upshift would each only drop the RPM's by 1500. I assume the only way to find out if this is a viable option would be to pull them both apart and give it a try.