Polaris Discussions about Polaris ATVs.

96 400 Sport Head

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Old Jan 20, 2005 | 12:12 AM
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oghma's Avatar
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Default 96 400 Sport Head

Just wondering how far I could safely machine my stock head down running pump fuel? I dont have the money to buy a cool head so to increase compression I wanted the cheap way out. Any help would be appreciated.
 
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Old Jan 20, 2005 | 12:37 AM
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Default 96 400 Sport Head

.020. Will give you around 12:1 compression and still be able to run pump gas.
 
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Old Jan 20, 2005 | 02:03 AM
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oghma's Avatar
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Default 96 400 Sport Head

Alright thanks. I forgot to tell you that this was a stock bore and a wiseco piston.
 
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