YXR223 build

Rat_ranger

Coast to Coast
So since I ended up rebuilding the RM to stock, I picked up a cheap no motor YZ250 to stick an XR motor into.

I'm building a 2000 xr motor, 8mm stroke, 66.5mm crf230 piston, atc cylinder for the bigger fins, and undecided on cam.

Starting this out by tearing down the spare crank, and offsetting the rod pin 4mm. I turned a steel plug, pressed it in and welded in 2 spots. Then made a nice fixture from a 6" OD aluminum round 3" long and got to work.
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Rat_ranger

Coast to Coast
Some slow progress. I think the engine is sitting where I want, made a super basic stand out of scrap to line things up. Cylinder is off getting bored, maybe it'll be ready by spring.
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Rat_ranger

Coast to Coast
It's a tight fit, but the neck brace clears the head. Tube showed up so next step is to remake the cradle and set up the front mounts.
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