jutny

well, it seems that my 80 12a has a much more shallow flywheel than my 83-84 12a does.... which means i cant use the clutch, or can i just swap the flywheel.

and if i even CAN swap the flywheel, where the hell do i procure a socket that large?

Felix Wankel

If you just swap flywheels, the engine will vibrate. The counterweights are different.

Wankelguy

Yes, I believe the FBs had a different (lighter) flywheel than the earlier SA models. The socket is 54mm, you can get them at Sears, but the flywheel wrench sold by Mazdatrix works great with it's two-foot mega-handle.
They're not cheap, but they make the job lots easier.

85RX7GS

iTrader: (1)

Most tool stores will carry that socket.

jutny

if i swap the counterweights from behind the flywheel?

Felix Wankel

They are cast into the flywheel.

Your cheapest way out is to just buy the 215mm clutch set for an early 12A.

jutny

dont i need one for the 83-85 12a, as thats the motor its going on to... 225mm i believe?

Felix Wankel

Use the 225mm one if you are using the later engine.

jutny

i am using the later one, i guess it has to be post 83 cause it has the different flywheel.

right?

Felix Wankel

Sounds like it. Did it have the water/oil cooler on it?

Even if you could use the 80 flywheel, I wouldn't, they are pretty heavy.

jutny

http://home.earthlink.net/~jutny/RX7/

check out the pics there...

and check out my other thread about the carb ****, i really need help, and you seem to know your **** when it comes to this stuff.

Felix Wankel

Yeah its an 83-5 engine.

The car is nice as hell!