Another piston question :D

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JamSund
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Another piston question :D

Post by JamSund »

Heya.
Kdx 200 1991
I just had my cylinder meassured. By a guy with experience, result was 66.05 66.06 66.07 at different places so 66.06. The manual says im good for another 0.04. Stock is 66.01-66.03 and service intervall at 66.10.

The piston however meassured 66.86, way too low.
So its time to get a new one.
Cyl-piston clearence is 0.063-0.093

So a d piston sounds good, prox
But found a wiseco for cheaper. Since i have 66.06 cylinder the wizeco should be okey.
So should i get a wizeco or a prox?
Or a cast (molding, not sure about the English word ) like wössner. They need less clearence right?

Im learning this whole thing atm so any help is really appreciated.

Cheers and braaap
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KDXGarage
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Re: Another piston question :D

Post by KDXGarage »

I think any would be fine, just warm it up properly and keep an eye on service intervals.
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PacificNWRider
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Re: Another piston question :D

Post by PacificNWRider »

I would say either as well, big debate, the forged pistons are supposed to be a little more NON forgiving in making sure its warmed-up but are more durable...

Race teams use both just do what KDX said
'91 KDX 250 D1
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