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-   -   Love a fresh motor (http://www.gasgasrider.org/forum/showthread.php?t=10251)

AZRickD 08-02-2011 08:10 AM

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.

eff 08-02-2011 08:38 AM

I'm due as well. :)

AZRickD 08-02-2011 09:38 AM

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.

GMP 08-02-2011 10:23 AM

Don't let a cast piston rattle around in the bore like that, it can drop its skirt.:eek:

desertgasser300 08-08-2011 03:42 AM

I just ordered a wossner kit for mine. I have always used wiseco. What was your impression of the piston when you got it?

AZRickD 08-08-2011 08:46 AM

It looked fine. The kit included everything I needed including the wrist pin bearing.


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