Compression - Yamaha Grizzly Forum : GrizzlyOwners.Com Yamaha Grizzly Forums


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Old 03-08-2009, 06:13 PM   #1 (permalink)
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Can anyone tell me how much compression my 2002 Grizzly should have when checked with a compression tester?
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Old 03-08-2009, 08:15 PM   #2 (permalink)
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If the manual I have for a 660 is covering a 2002 its 188.31 psi) at 850
r/min. Thats using a stock piston. 9.1 : 1 compresion ratio
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Old 03-08-2009, 08:34 PM   #3 (permalink)
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thats what my manual says also
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Old 03-09-2009, 07:33 AM   #4 (permalink)
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Is the info 'cause you're checking to see if a rebuild is due? There's a TON of threads out there covering that topic...
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Old 03-11-2009, 04:47 PM   #5 (permalink)
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yes I was wondering if a rebuild was due just bought it with 11,000 miles on it!
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Old 03-13-2009, 07:26 AM   #6 (permalink)
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Collecting some information before an important decision needs to be made is always a wise course of action!
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