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Canadian Daves JustKDX
Quick question for a friend of mine
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[QUOTE="dirt bike dave, post: 1301249, member: 18302"] 1) The motor is based on the '88 KX250. It thinke the '89 KX is very similar; not sure about the '90 and '91. The cylinder porting is very different. The carb jetting is different. Pipes are different. You can use the thin head gaskets from a '88 KX250 to raise compression and get even more low end power, and it will still run fine on pump premium fuel. 2) Not sure about a KX250 silencer, but an aftermarket silencer/apark arrestor from the '89 - '93 KDX200 can be modified to fit. That's what I ran on mine. 3) Not as much, but the stock jetting is WAY too rich (even worse than the 200). To avoid powervalve problems and to to help the bike run better, the stock main, pilot, needel and slide should be leaned out. Basically, the bike was not well set up by Kawasaki, but with some attention to detail (mainly the forks and the jetting) it can be made to work quite well and is reilable with good low end power. After much effort with setup, I really preferred mine to any 200 I've ridden. Look for posts by blackduc748 ( I think that is his name). He has a KDX250 home page where he summarized many of the set up things my friend and I developed for our KDX250s back in the day, as well as things from many other posters. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Quick question for a friend of mine
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