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-   -   Different Flywheels on 12a's? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/different-flywheels-12as-134549/)

jutny 11-20-02 07:15 PM

Different Flywheels on 12a's?
 
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? :confused:

Felix Wankel 11-20-02 07:23 PM

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

Wankelguy 11-20-02 07:58 PM

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 11-20-02 08:08 PM

Re: Different Flywheels on 12a's?
 

Originally posted by jutny
and if i even CAN swap the flywheel, where the hell do i procure a socket that large? :confused:
Most tool stores will carry that socket.

jutny 11-20-02 08:34 PM


Originally posted by Felix Wankel
If you just swap flywheels, the engine will vibrate. The counterweights are different.
if i swap the counterweights from behind the flywheel?

Felix Wankel 11-20-02 08:44 PM

They are cast into the flywheel.

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

jutny 11-20-02 08:46 PM

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

Felix Wankel 11-20-02 08:49 PM

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

jutny 11-20-02 08:56 PM

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

right?

Felix Wankel 11-20-02 09:02 PM

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 11-20-02 09:05 PM

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

check out the pics there...

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

Felix Wankel 11-20-02 09:20 PM

Yeah its an 83-5 engine.

The car is nice as hell!


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