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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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  #1  
Old 08-02-2011, 09:10 AM
AZRickD AZRickD is offline
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Default 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.



Last edited by AZRickD; 08-02-2011 at 10:39 AM.
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Old 08-02-2011, 09:38 AM
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eff eff is offline
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I'm due as well.
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2004 GasGas DE250
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Old 08-02-2011, 10:38 AM
AZRickD AZRickD is offline
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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.
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Old 08-02-2011, 11:23 AM
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Don't let a cast piston rattle around in the bore like that, it can drop its skirt.
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Old 08-08-2011, 04:42 AM
desertgasser300 desertgasser300 is offline
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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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Old 08-08-2011, 09:46 AM
AZRickD AZRickD is offline
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It looked fine. The kit included everything I needed including the wrist pin bearing.
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