05-15-2006, 08:44 PM

azbirds

Ultimate Warrior

Join Date: Sep 2003

Location: Glendale, Az.

Posts: 1,714

Rear main seal problems

I don't want to mention brands, but I used an aftermarket seal on a friends 400 and ran into some problems. The seal crystalized and fell apart. I then tried another seal on the market and it started tranfering rubber to the crank. I tried using another one of those seals with different lube on it and it still transfered rubber. I've used the Felpro MS-40032 before(with some shimming) but I wanted to try these seals. Anyone else have these problems? Cures? I'm tired of pulling this engine out.

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