Maintenance & Technical > KX500 Original

Piston-cylinder clearance

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Pvo:
I just had my cylinder re niked, new rings, and piston and am ready to put the motor back together.  I have an 86 500 and in the factory service manual the standard clearance between the piston and cylinder is .002-.003.  I measured my clearance to be .005 by slipping a feeler gauge between the piston and cylinder.  I've built a few motors and this seems a bit loose to me.  The shop I bought the parts from said it's normal and to run it but I'd like some opinions. Thanks.

kaw rider:
what piston do you have.

Motorrad:

--- Quote from: kaw rider on August 30, 2010, 05:35:09 AM ---what piston do you have.

--- End quote ---

Exactly..
Stock cast pistons run a tighter clearance than Forged....   But they should have asked you this before they plated it.....

Pvo:
I have a Pro-X piston.  I don't have the box with me but the dennis kirk description describes it as being a cast piston.

kaw rider:
that is loose for a cast piston

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