bearman001

I was wondering if you could use the S5 rotors in the S4 housing. I have the rotors from a 1989 already, and would like to put them in my 1988 housings. I would have used the housing for the S5, but the front side housing, and the intermediate housings had blow outs at the water jackets.

roadkill669

Yes

ambassador_josh

Lighter and higher compression, too

bearman001

Thanks for the replies. I was hoping that was the case, so i can get more ponies

RONIN FC

You also need the counterweights to match the rotors.

ColinRX7

Yep.



Not as simple as just swapping the rotors.

rx7_re

Not to meantion the flywheel as well. But alas, you should get 10 hp or so.

CGeek2k

I would like to do this same thing. I have one good rotor and the counterweights, however the car was an auto. Will the s4 flywheel work, or will I have to find an s5? Also are the rear counterweights different between manual and auto?

Sesshoumaru

ok here it goes



rotors-



rotors weight the same in each series. S4 NA weight the same as a S4 TII thus the counter weights are the same. Compression and weights are different between series and TII and NA rotors are different compressions too within the same series.



Flywheels-



Manuals have the counter weight built into the flywheel. Since there is different weight of rotors between series the flywheels are different between the series.



After market flywheels-



If you want an after market flywheel you need the counter weight from an AT from your SERIES.



Transmissions-



these must match your clutch/flywheel