Maintenance & Technical > KX500 Original
K5 To sleeve or not to sleeve?
YUNGGUNNAZ:
those are pretty bad cracks extending way into exhaust ports under powervalve flap.this area gets extremely hot and crack may have spread elsewhere.if it was me,i would look for another cylinder.this motor took a terrible shock.check powervalve drums also.
Johnniespeed:
How much does a new cylinder cost ? Are they available ?
2001KX5:
The power valve drums are in great shape and over all so is the cylinder. Its just those horizontal cracks. Most cylinder cracking is supposed to be repariable. I'm going to send it to eric gorr, but have to confirm with him if these cracks can be welded up with some longenvity. If any one has experience with a welded cracked cylinder please school me.
Oh yeah a cylinder would cost $800 canadian plus 15% tax. Then I still have to get gaskets and piston.
KXcam22:
2001KX5,
I would send those photos to eric gore first. He might be able to give you an idea on repairablility before you ship the cylinder down there. Otherwise a used cylinder might be a better deal. Nice bike though. Somehow it's had a huge shock to the top end. Suggest giving the rod a look too. Read the rod clearance specs carefully because they actually have a teeny bit of up & down play that you can feel which is normal (fooled me into starting a rebuild). Cam.
2001KX5:
Oh don't worry I'm tearing this bike completly apart and checking ever nut and bolt. I would not spend so much on a top end to just have to to replace it due to a shot bottom end.
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