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Originally Posted by JAAY
I would love that. JK They seem to work great on peoples track cars. I had light weight flywheels on 3 other cars and never had such a issue. One of the cars had over 90k on that setup.
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It depends on the engine manufacturer.
Some companies fully balance the crankshaft, and the only thing that the flywheel does is provide needed inertia.
Other companies rely on the flywheel to provide the balancing forces for the crankshaft, along with the needed inertia to keep things spinning.
I could almost guarantee that your other engines were all internally balanced crankshafts, and that's why you didn't have any issues using a lighter flywheel.
Maybe your company took the balancing needs of the Porsche engine into consideration.
I don't know, so we will have to wait and see what Jake has to offer.
But yes, its kind of need having an actual sealed bearing as the pilot bearing.
Still doesn't make it much easier to replace if it goes bad, though.
BC.