therotaryrocket

I am putting an s5 turbo jdm engine into my s4 turbo car and I want to use my s4 turbo lightweight flywheel and clutch. My question is can I use the rear counter weight off of a NON turbo automatic s5 car with my s4 turbo lightweight flywheel and clutch? I don't want to put it all together and find out the hard way, and I'm concerned that the non-turbo s5 counter weight may be different than the turbo s5 counterweight.

I also wonder what I'll have to do about using my s4 ecu and wiring harness to work with a jdm s5 turbo engine. I know I need to swap over my old front cover with mechanical OMP. I know I need the s4 fuel injectors. But how is a jdm engine going to be equipped emissions wise? I want to remove the emissions control devices to simplify the swap process and maintenance in the future.

thanks

Puck

iTrader: (1)

You are correct to be concerned. The S5 n/a and S5 turbo use different rotors, and therefor have different counterweights. You will need to find a counterweight off of a S5 turbo automatic.

farberio

iTrader: (7)

^wrong. Turbo and n/a rotors weigh the same for each series. So any s5 courterweight will work for you.

Puck

iTrader: (1)

Dammit! When I looked at Mazdatrix site, I was looking at flywheels, and not counterweights!!!

F**K... thanks for the correction, Farberio!

therotaryrocket

okay thanks a lot. I still would like to know the difference between the jdm and usdm motors though.

eage8

iTrader: (9)

They also never made turbo automatics at least in the US....

farberio

iTrader: (7)

^ You know that's an interesting point. Why are some people so JDM that they RHD their car and do anything that was done for the JDM version....but no-one is so JDM that they swap in the TII automatic.

Maybe I will do that and out JDM them all!

farberio

iTrader: (7)

No prob, you are correct about the flywheel though. It needs to match the transmission being used. Along with the clutch, starter, and clutch slave cylinder.

farberio

iTrader: (7)

I went a head and used the RX7Club official search feature to find a thread for you. Next time, please don't waste my 10seconds.

https://www.rx7club.com/showthread.p...jdm+difference

therotaryrocket

thanks farberio, i definitely appreciate it. can't wait to have it running!