Piston ring question
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Joined: May 2016
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From: Missouri
Piston ring question
Do the screamin eagle forged pistons take a different ring set than the screamin eagle cast? Picked up some mint 95" forged pistons but not sure on the rings? Also what is best piston clearance to set the forged pistons at.
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Joined: Jun 2006
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From: san antonio
Harley has used cast rings, moly rings, etc., etc. Get a set of HD's titanium SST rings which is what is sold with their forged pistons. Set the pistons up at the manufacturers recommendation which is probably .0020"-.0030" and don't forget to check ring gap and adjust if necessary.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
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From: san antonio
I don't know who makes rings for the MoCo but Hastings does make cast and SS rings for HD OEM pistons; suggest you give them a call and have your piston PN handy.
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Joined: Jun 2006
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From: san antonio
Yes; a bit on the high side but not much.
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Joined: Jan 2014
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From: Central California
I was looking thru my Total Seal catalog and they list ring widths of 1.5 x 1.5 x 3.0mm for 88" TCs (3.75" bore including oversizes to .020"). A 3.875 bore has ring widths listed as 1.5 x 1.5 x 2.5mm ring widths.
I've been using Total Seal in my drag car for nearly 20 years. Gapless design on either the top or second ring. My leak-down readings are typically less than 2%. Sometimes a little less.
But they are pricey. I'll pay $160 for a set for a 4 cylinder (3.701" bore. Slightly smaller than HD)
I've been using Total Seal in my drag car for nearly 20 years. Gapless design on either the top or second ring. My leak-down readings are typically less than 2%. Sometimes a little less.
But they are pricey. I'll pay $160 for a set for a 4 cylinder (3.701" bore. Slightly smaller than HD)
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