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3
Joined
5/20/2018
Location
Beaumont, CA
US
trit215
5/20/2018 11:28am
5/20/2018 11:28am
Hey guys, I picked up a recent project bike, 02 CR250. Long story short pulled the cylinder off and theres a crack in it with a lot of major scoring on the inside of the sleeve. I’m looking around to see if any other cylinders (later years) work with the 02 motor. Does anybody know if the later 04 year cylinders work or if you can get them to work with some modifications? I’ve seen in other forums theirs a list of all the changes they made from 98-07. I wasn’t sure if anybody has come across a similar issue and how did you guys fix it? Any help is much appreciated thanks.
05-07 are a flat-top piston along with the cylinder switching to a female outlet (the pipe fits in the cylinder as opposed to 02-04 with an exhaust flange that the pipe goes on). They also have different power valve access.
I believe you could use an 05-07 cylinder, but you’d have to use a matching pipe, piston, and possibly head.
If the crack is in the exhaust bridge, millennium can possibly fix it.
While you’re in there, I’d consider putting in an 05-07 OE crank-it gets rid of the shells on the 02-04 that can crack and ruin your day.
05-07 cyl's can be used, but you'll need a domed piston, head, male expansion chamber & CDI..
The 02-04 models use a flat top piston.
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