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Old 01-09-2010, 03:24 PM
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Question piston ring end gap??

The piston and ring set I recently bought doesnt have the specs on the ring end gap. (dual rings)

The best info I can find on single rings is .016 to .020 .

Can anyone give me a solid answer for the dual rings?

2006 Skidoo 800
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Last edited by Timber_Tramp; 01-10-2010 at 08:11 AM.
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Old 01-09-2010, 09:45 PM
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On my polaris (dual rings) it was spec'd out at .020 .
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Old 01-09-2010, 10:22 PM
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Just installed my SPI pistons on my 99 670X, mine were .013. Instructions they came with say for every INCH of cylinder space, its sappose to be .04. So, mines a 78mm bore, so 78mm = 3.07 inches. 3.07x 4 =12.28. Lets say yours is 85mm, tha'd be about a .013 (give or take).
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Old 01-10-2010, 05:44 AM
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I run .018 on my 860
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