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Old 04-21-2014, 07:14 AM   #1
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Flywheel Re surfacing

My apologies if this question has been asked before, But I have a flywheel from a 2001 S that has some minor grooves in it. My question is "Can it be re surfaced"?
The 101 project book suggests no, but that be may aimed at persuading people to buy an new one. With it being made in two pieces, I would block the movable part from beneath then clock it so its level before surface grinding.

Thanks - Andy
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Old 04-21-2014, 08:23 AM   #2
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Short answer... yes


whether it is recommended is subject to debate.

I have had it done recently with out issues.

pricing can be anywhere from $75 to $450 depending on how greedy the machine shop is.

Last edited by healthservices; 04-21-2014 at 08:25 AM.
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Old 04-21-2014, 09:58 AM   #3
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You might have trouble getting a surface grinder in there without hitting the timing teeth. The few (non-Porsche) flywheels that I have seen resurfaced were just face milled and not ground.
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Old 04-21-2014, 10:55 AM   #4
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In my experience by the time a DMF unit needs to be resurfaced its very near maximum deflection of the two masses and should be replaced anyway. Kinda like putting lipstick on a pig to resurface one.
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Old 04-21-2014, 11:20 AM   #5
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Thanks for all your comments. Jake, You have a good point, however I'm on budget and would be doing the work myself
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Old 04-21-2014, 03:23 PM   #6
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Quote:
Originally Posted by Jake Raby View Post
In my experience by the time a DMF unit needs to be resurfaced its very near maximum deflection of the two masses and should be replaced anyway. Kinda like putting lipstick on a pig to resurface one.
Jake,

Would you recommend re-surfacing and then balancing a 'New" DMFW..?

This is to remove some of the inertial weight (not quite like a LWFW), but end up with a lighter than a standard dual mass flywheel.

Your comments are always appreciated, thank you.

.
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