Convert 99 KDX 200 To 220

[BB007]

Guy, it's near the end of the riding season and I had a thought. I was going to do a top end job on my KDX 200 and was thinking has anybody tried changing their 200 to a 220? This bike already has a bigger carb than the 220 so would it be practical to get a 220 cylinder and piston. How about the heads are they interchangable? What do I need to do for this conversion and is it worth it. Will the 220 parts all fit and what about jetting for the carb? Right now I have a pro circut pipe and 607 reeds along with a 155 main jet and a 45 if I remember pilot jet and the bike runs great. If I could keep the top end power and gain bottom and mid range it would be great. Does anybody have any thoughts on this matter?

 

[23jayhawk]

If its time for a top end & you have no compelling reason to stay at 200cc, then consider sending your cylinder & head to Eric Gorr for 'The Treatment'. He can take it to 225cc, along with some porting enhancements that raise the entire power curve. I don't know his price for that work, but I understand it is at least competitive with the cost of a new 220cc jug from Kawasaki. And there would be no comparison in the power, I'm sure.

That's what I plan to do, once I need a top end. :thumb:

 

[Canadian Dave]

Check out this as well.

David

 

[CMcCarthy]

here's another question. If I get a 220 jug and have EG make it a 240, will it still fit the 200 bottom end?

 

[BRush]

There's no need to get a 220 cylinder. With either the 225cc or the 240cc kit, you start out with the 200cc cylinder you have now. With the . 225 kit your cylinder is bored and replated. With the 240 kit, I believe a sleeve is installed.

 

[70 marlin]

Call mr gorr. dittio on the 240 kit! why stop at 220. my son has a fredette 220 kit on his bike. it works fine. go with gorr's porting also! you'll love it.