Yamaha Discussions about Yamaha ATVs.

raptor compression

Old Jan 4, 2003 | 04:52 PM
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Default raptor compression

stock compression is a little on the low side. if i were to put a 12:1 pistion in it what octane should i run, just higher octame pump gas or "race" gas?????
 
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Old Jan 4, 2003 | 05:49 PM
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Default raptor compression

with that comp ratio I would suggest running a mix of about 100octane depending of course on your cam selection and then backing it down slowly until you need more
 
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Old Jan 4, 2003 | 06:43 PM
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Default raptor compression

stock cam, the only thing that would change is the pipe, switch that out for a ct racing pipe
 
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Old Jan 4, 2003 | 06:58 PM
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Default raptor compression

You will get more of a boost with also adding a cam
 
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Old Jan 4, 2003 | 07:20 PM
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Default raptor compression

think i could get away with 92 octane????
 
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Old Jan 4, 2003 | 07:25 PM
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Default raptor compression

Not with the 12.1 but 11.1 you can
 
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Old Jan 4, 2003 | 07:31 PM
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Default raptor compression

what if i put in some sort of an octane booster???
 
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