Love a fresh motor
For the last few months I've been hearing top-end noise. "Power valve" said some. "It's just some piston slap," said others.
I got a Wossner A-sized piston kit from (can't remember who) and slapped it in there. Nice, powerful, quiet motor again. Lovin' it. |
I'm due as well. :)
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The piston (Vertex) was about 2.5 years old (2nd one in the bike). I did the squish band mod just after that and compared it by swapping a buddie's spare head. Like night and day.
I had re-ringed it about 15 months ago -- that freshened it up as well. I noticed the noise beginning last November and waited all this time to pop the top. |
Don't let a cast piston rattle around in the bore like that, it can drop its skirt.:eek:
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I just ordered a wossner kit for mine. I have always used wiseco. What was your impression of the piston when you got it?
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It looked fine. The kit included everything I needed including the wrist pin bearing.
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