Is This Cylinder Bad?

Discussion specific to the 1995 - 2006 KDX200 (H Series) and 1995 - 2005 KDX220R (A Series) models sold in the USA
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qbury
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Is This Cylinder Bad?

Post by qbury »

2002 KDX200

While waiting for my DMV paperwork to come in, (Almost 2 months now), I decided to pull the top end apart to check the piston and cylinder and this is what I found. Is this cylinder bad?
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qbury
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Re: Is This Cylinder Bad?

Post by qbury »

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Re: Is This Cylinder Bad?

Post by KDXGarage »

Unless I am missing something, clean the cylinder real well and throw in a new piston and rings, gaskets, coolant, plug, etc.
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Re: Is This Cylinder Bad?

Post by qbury »

Ok. I wasn't sure about the lines in the cylinder. Other top ends I've done didn't have those. The piston had a very light film of carbon on top and the pv wasn't caked at all. The head had no carbon at all.
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Re: Is This Cylinder Bad?

Post by bufftester »

That doesn't look bad, can even see the cross hatching in a couple. The streaks look like blowby around the rings. Like KDXG said, clean it lightly with a scotch brite pad (no hones) and new piston/rings
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Re: Is This Cylinder Bad?

Post by qbury »

Sounds good. Thanks guys.
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Re: Is This Cylinder Bad?

Post by KDXGarage »

worn, but not worn out
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Re: Is This Cylinder Bad?

Post by qbury »

I just measured it and it's still in spec.

BTW can these be sleeved if worn out?
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Re: Is This Cylinder Bad?

Post by KDXGarage »

What did you measure it with and where?

Look up PowerSeal USA and Millenium Technologies for "replating". Skip old school sleeving. The 1974 KX125 did not come with a sleeve. No need to go back to 1973. :-)
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Re: Is This Cylinder Bad?

Post by qbury »

A bore gauge. 20mm from top front and rear.
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Re: Is This Cylinder Bad?

Post by KDXGarage »

OK. I was hoping that is what you would say. I wish I had a dollar for every time someone said dial calipers.
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Re: Is This Cylinder Bad?

Post by qbury »

:supz:
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Re: Is This Cylinder Bad?

Post by javjacob »

When the time comes send it to Millennium and have it replated. It will be better than it was new. Never sleeve a cylinder.
2000 Kawasaki KDX220R
1996 Kawasaki KDX200
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Re: Is This Cylinder Bad?

Post by qbury »

javjacob wrote: 01:27 pm Sep 04 2020 When the time comes send it to Millennium and have it replated. It will be better than it was new. Never sleeve a cylinder.
That's exactly what I did. They did a great job.
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