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Guest Message by DevFuse

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Properly Ground EA81 Flywheel Pics: Anybody Have Them?

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4 replies to this topic

#1 TheLoyale


    Safariwagon: The Legend

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Posted 07 October 2012 - 04:40 PM

Looking for a picture of a newly resurfaced flywheel, gonna pick mine up tomorrow and want to make sure it is correct (So I have an idea what I'm looking at)

I heard some parts houses will use the same machine which turns rotors, vs using one for flywheels, is this a problem and are they any ways to tell which machine has been used by looking at the newly turned surface?

Pictures please!


#2 Idasho


    Lost in the woods....

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Posted 07 October 2012 - 04:51 PM

You need an actual flywheel machine to turn stepped flywheels like a subaru flywheel.

That said, you can probably turn rotors on the same machine.

here is my newly turned ea81 flywheel.

Just ignore the ground step. This was done to retrofit an ea82 clutch.

But to pay attention to the pattern created by the machine.

Posted Image

Posted Image

#3 6 Star

6 Star

    Boxer Nostalgic

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Posted 07 October 2012 - 09:15 PM

Heres mine, its off an '82 so it is a different size than Idasho's.

Posted Image

#4 TheLoyale


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Posted 08 October 2012 - 09:41 AM

Ok, that helps! Machining marks noted.

So when they grind the clamping surface, they also need to regrind the step regardless, right?

#5 Crazyeights



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Posted 09 October 2012 - 10:41 PM

Correct, and it is done to spec. Either the factory spec or one that you specified in order to maintain the proper clamping force on the clutch disc.

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