KDXRIDER.NET

Some pics:









Can I get another topend out of this thing?

Needs plated....

from looking at the pics, i think you are about time for a replate. 3rd + 4th pics from the bottom.....looks like its pretty thin, and the lines look like border line..........but i cant say for sure from the pics. all i can say is, if it was mine, i would replate.

my vote is replate...........granted it's tough to tell from the pics but IMHO this is one of those questions where if in doubt enough for most people to have to ask,it's usually time for it.

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frankenschwinn wrote:Some pics:









Can I get another topend out of this thing?

Is this before or after you hit it with a Scotchpad?

Before. It looks a bit better now. Measures within spec. Would be better to plate but It can go another shorter round. Replacing piston, rings and cleaning kips while its apart.

Good luck with it! You might need it.....

I don't know....that cylinder really looks "OK" to me. There are a couple of light scores, but nothing that would make me send it out right away unless I had money to burn, and/or I was seeking perfection. The plating looks to be entirely intact, and in good shape for the most part. I see no flakeing at all. Flakeing is pretty obvious when you see it. KX500's were famous for this, and I have seen several of them in bad shape.
I would clean it up, install a new piston and rings, and run it.
**JMO**

juliend wrote:Good luck with it! You might need it.....

hopefully it will get me through the divorce... Thats the main goal.

The cylinder looks OK. I would put a forged piston to mitigate the damage a less than perfect bore will do. My cylinder was worst than that two seasons ago and I still riding it. In my case I notice more piston wear than expected.

Agree on the forged piston. I did a similar thing with the first top end on my bike. It was barely in spec, with wear on the bottom of the cylinder similar to yours. It destroyed a cast piston in short order. I took it out just in time. The skirts had started to develop stress cracks from piston slap after just a few months time.

I have a Wiseco piston kit in hand. I will not even attempt to argue the merits of not plating it now as I know that is the right thing to do. just can't do it right now if not absolutely necessary.

Mine had little grey lines like yours (see below) and I did not replate. I hope those little white linty things are actually lint and not marks.

frankenschwinn wrote:I have a Wiseco piston kit in hand. I will not even attempt to argue the merits of not plating it now as I know that is the right thing to do. just can't do it right now if not absolutely necessary.

It'll run.

Mine looked similar to the OP's before I hit it with the Scotchpad

I looked but I guess I did not take any before pics

Looks perfect Wibby!

It was a big surprise

But I'm sure I had bloody knuckles

Oh you know what I used? I used a scothpad sponge. It was easier and did not snag on the ports as bad