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Hello fellow KDXers:
Question: Is it OK to swap my KDX top ends? Both are 2004.
On KDX #1, I did a complete engine rebuild. But its proving to still have have bottom end problems but the top end is fresh. (Newly replated cylinder, new piston and rings.)

KDX #2 has a tight bottom end, but top end is average at best (rings are shot, cylinder could use a replate, no scoring but some blotchy patches on cylinder wall.

Can't afford to replate KDX #2's cylinder right now, but could do new piston and rings. But seems to run fine just not as zippy as it could be.

Just doing a top end swap would match up the best bottom end with best top end. And would be the cheapest option for now. I can always rebuild bad kdx top end later on.

Thoughts? Suggestions?

I would think you'd be good to go with a gasket kit and some coolant. There isn't anything special that was done to mate each cylinder with its original case halves.

No problem swapping them. Go for it!

John_S wrote: 02:49 pm May 17 2022 I would think you'd be good to go with a gasket kit and some coolant. There isn't anything special that was done to mate each cylinder with its original case halves.

Ok great thanks for feedback!

SS109 wrote: 06:11 pm May 17 2022 No problem swapping them. Go for it!

Ok ss109 will do! Thanks for feedback!

yep, gasket kit and coolant