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Post by spish on Nov 30, 2004 13:27:42 GMT -5
How often do you guys reccomend before you rebuilt the top end. What is considered "good" compression #'s (180?) and at what point should it be rebuilt? (top end)
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Post by yamahafreek on Nov 30, 2004 13:42:14 GMT -5
compression numbers will vary depending on how your porting and head is setup, personally i feel it best to freshen up the top end at least every 50 hours of ride time (but thats just me) the thing with static comp readings is....... you want to take a reading when it has a fresh top end and record the numbers........ if it drops 5 psi then you know to tear it down and at least re ring it at least thats my approach, im sure you will see other opinions/approaches to this  |
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Post by spish on Dec 1, 2004 0:09:07 GMT -5
thanks yamaha freek  |
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bradley300
Private
gncc sport class #812
Posts: 152
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Post by bradley300 on Dec 2, 2004 13:42:48 GMT -5
i have 10 months of harescrambles on mine and dont feel any loss in power so far, sounds funny to me. (this is the orignal stock bore from the factory) idont havea compression tester,but i tore themotor down the other day anmd the cylinder walls still look perfect and the piston has almost no wobble at all. i geuss its all in how you break it in?
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