rx7henry

I am thinking of purchasing a used na motor for fairly cheap ($600) from pete at fc3sracing.com. He said that it would cost around $1200 or so for the parts, and his labor to put it in.
Heres the thing, he said that he is going to use the na drivetrain w/ the turbo motor. I was wondering if that would work because I know that the motor and tranny will bolt, but the na tranny is also weaker than the turbo tranny. I was wondering if you could keep the na tranny, and put in a heavy duty clutch to use w/ the turbo to not damage the na tranny as much.
My other question is if you could use the turbo motor, and tranny, with the na driveshaft, and rear end. I have read up, and it said that you need the entire turbo drivetrain to do that, but I think I heard somewhere that the turbo tranny can work with the na driveshaft, and rearend. Is this true?

95R2-89TII Ground Zero

My personal opinion is this. I would NOT put a "heavy duty" clutch in the car. Rather I would "test" it out with a stock clutch in it to see what happens. I personally would much rather burn up a $300 part, rather than a $1500 tranny. Just my .02

jon88se

The stock NA clutch will not handle the extra torque of a mildly modded TII motor (nobody stays 100% stock). I'm running a Centerforce dual friction NA clutch on my TII motor with NA drivetrain and it's fine. I'm running 12-13 psi on the stock turbo with a FMIC so I assume I'm putting down around 240rwhp and it's holding up extremely well. The clutch already HAD about 40K on it when I did the TII swap!! An ACT is also a nice choice but the standard ACT street clutch is more expensive than their 6 puck clutch for the NA. The 6 puck will hold much more power and is less expensive, but also much more of a drivetrain shock.

The NA tranny/rear will take the extra power just fine in hard driving but won't stand much drag racing abuse. If you're constantly launching, a TII tranny/rear is a good idea. For a strict street car, the NA pieces are fine.

rx7henry

I also had a question about the exhaust manifold. On my na, I have headers, and a straight pipe. Would that work in conjunction w/ the turbo motor, say in terms of increasing, or decreasing power output.

Aaron Cake

iTrader: (1)

Nope. The exhuast parts won't fit.

Whizbang

are the rear dif as the same on na or tII cars?

Aaron Cake

iTrader: (1)

No. Please read the FAQ. All of this is covered.

Whizbang

^couldnt find it