Ive been running a miata gearbox w/85 rx-7 bell and tail housing for a little over a year now. Well i changed my clutch and i forgot which throwout bearing I used last time. Keep in mind i have a '79 clutch & flywheel (215mm). I know it wasnt the miata one it was completly different. So, anyone else out there using a FB tranny in an SA. Which throwout bearing are you using?

 

im using an sa motor in an FB, thus i have the SA motor to FB tranny your looking for.. i used the FB throwout bearing, the FB clutch disc, SA fly and SA pressureplate/spring assy

and then i put dino oil in the gearbox.. what a boneheaded move that was. but the car hasnt complained yet. ive got about 10,000km on that setup.

 

that should be fine. Im using FB t/o bearing & fork in my RX-3 including duece with miata internals, and quattro.

 

A little off topic here, but what is the purpose of using the miata center section? Is it stronger in any way than the FB center section? Or is it purely just for gearing.

 

there was a thread started on this earlier (re: "what is purpose")

i cant remember the result, other than that the six speed guts dont fit...

 

well thats probably the problem then. Thanks guys.

 

Yeah, i just looked up the part number and they are the same... so please ignore my pointless thread...