Maintenance & Technical > KX500 Original

Do I need to hone my cylinder?

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medicman:
Piston looked good, carbon build up on the top, some brown under the rings, not sure if thats normal? small area of "scuffing on the exhaust side, but its smooth to the touch. I think Ill run it and see what happens

KXcam22:
I usually give them a nice light crosshatch by hand using 400 wet & dry paper. After that clean the cylinder really well and you should be good to go.  Being that you have a steel sleeve and recognize that the bike will run much better with a new nikasil cylinder, I wouldn't worry too much about the cylinder clearance and have some fun riding the bike until you can get the new top end. Cam.

medicman:
Cool thanks for your help. What would be the teqhnique of doing the cross hatch by hand with the sand paper? dry then wet? or the other way around

KXcam22:
Wet with Wd40 as a lube.  Keep slowily spinning the cylinder as you sand with a small piece of Wet&Dry on two or three fingertips, sanding on a 45 degree angle.  Just enough to get rid of the shinyness. Cam.

Jopiz:
How can i remove cylinder wall glazing? It's polished. No scratches that i can feel. Visible scratches though is found. Cross-hatch marks are not visible, i can see them only at bottom of the bore. Compression is good. Had leaking head, so coolant entered combustion chamber -> oil film partly flushed away. No seizure marks. Got 175 psi of pressure when i tested with compression gauge.   :|

-J

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