Hello everyone, new member here.
I recently picked up a unknown to me roached CRF250R. Its an 04.
After the first oil change it was indicated it would need a rebuild. So I've been doing the process myself.
Last night I split the cases and got everything apart. Only to find this engine has had a crank detonation previously, and the rebuilder chose to repair the case halves using JB weld on the case halves where the crank would be. Case half walls are all scored and toast.
But I've found the right side case half for an 04 is no longer made by Honda.
Case halves for an 05 are still made though. And it seems to me that these engines from 04-07/09 went through very little changes.
So, ultimately I'm wondering if I can rebuild this engine with 05 case halves but 04 internals such as transmission gears and etc.
Any help is greatly appreciated.