Ok guys I had been putting off rebuilding the top end for some time, however today I decided to tackle it using the online manual (which is excellent by the way). Everything came apart smoothly, other than being sprayed in the face with coolant when I had to use some force to get one of the hoses off.
I have included some pics and want to see what you guys think. The piston, head, and cylinder did not look anywhere near as bad I would have thought. I was under the impression that this bike had never had a rebuild, what do you guys think? I'm pretty sure that a non Wiseco piston was in there. Also, do the reeds look stock (I want to order some power reeds and don't want to duplicate). I plan on sending the head to Ron for the mod. Other than following the manual for re-assembly, is there anything else that looks off or bad in relation to the pics I posted?
Mid Rebuild on 2000 KDX220, few questions
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First, welcome to the forum!
Those reeds do indeed look stock.
I'm not sure on the piston. Is that an A stamped on top? If so, it's probably stock. You'll want to be sure you have a forged piston in it. If it were a Wiseco, it would have a W on the wrist pin boss, viewable from the underside of the piston.
I'm not sure what's going on with that cylinder. Scrub it down with some WD-40 and scothbrite and get another pic. Looks like some pitting or corrosion or something. Could be just dirty though.
Those reeds do indeed look stock.
I'm not sure on the piston. Is that an A stamped on top? If so, it's probably stock. You'll want to be sure you have a forged piston in it. If it were a Wiseco, it would have a W on the wrist pin boss, viewable from the underside of the piston.
I'm not sure what's going on with that cylinder. Scrub it down with some WD-40 and scothbrite and get another pic. Looks like some pitting or corrosion or something. Could be just dirty though.