Mid Rebuild on 2000 KDX220, few questions

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Mid Rebuild on 2000 KDX220, few questions

Postby Nickj03b » 07:23 pm Mar 06 2012

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?

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Postby Julien D » 07:44 pm Mar 06 2012

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.
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Postby Nickj03b » 07:50 pm Mar 06 2012

That is just dust in the cylinder. I cant see any pitting/chipping/scratches on the walls of any kind.
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Postby bart » 01:49 am Mar 08 2012

Just curious, which service manual are you referring to?
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Postby Nickj03b » 02:05 pm Mar 08 2012

Cyclepedia
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