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Ring Gap for Boost

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Old Dec 9, 2021 | 08:59 AM
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Default Ring Gap for Boost

Needing to know target ring gaps for boost. Engine will be 6.2L LS3 with overdriven LSA supercharger (10" crank pulley, stock upper pulley), lake water cooled intercooler, and E85 pump fuel. 224/232 cam. Forged pistons, compression ratio TBD but likely 10.5'ish, not purchased yet. Thanks.
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Old Dec 9, 2021 | 09:09 AM
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http://blog.wiseco.com/everything-yo...about-ring-gap

This is a little tighter than I go on something boosted. Like to see about 26-28 on the top ring.
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Old Dec 9, 2021 | 11:04 AM
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Originally Posted by ddnspider
http://blog.wiseco.com/everything-yo...about-ring-gap

This is a little tighter than I go on something boosted. Like to see about 26-28 on the top ring.
Useful, thanks for the quick response, good chart.
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Old Dec 9, 2021 | 12:24 PM
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I did .024/.026 which was what Mahle recommended for their file fit rings with a supercharger.
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Old Dec 9, 2021 | 01:58 PM
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Originally Posted by ryeguy2006a
I did .024/.026 which was what Mahle recommended for their file fit rings with a supercharger.
Good stuff. Thanks again for another reference. I doubt the fuel type should impact it? Not even sure if E85 burns cooler, etc....I think so, it may. Would that tighten up the gap some? Probably not going to find E85 specific ring gap specs. The above info should suffice. Always an open ear to any additional input, please and thanks.
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