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Old 06-25-2010, 12:29 AM   #43 (permalink)
WarmAndSCSI
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Originally Posted by Jordo! View Post
Good question -- I doubt they're forged...

Anyone have pics of them? Wondering how thick the ringlands are and how high up the rings are.
The top ring land is probably very thick because of the crown height that comes with most 11:1 CR piston packages.

The easiest way to tell what material the stock pistons are is to examine the stock piston-to-wall clearance spec. If it's really minuscule (measured in ten-thousandths), they're hypereutectic. A clearance measured in thousandths would indicate they're 4032 forged pistons.

Though any shop who has built up a couple VHR's should know for certain. It's somewhat hard to tell by examining some OEM pistons, but there are tell-tale signs just like with crankshaft forgings.
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