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jim1234

Xr628 ? Reliable

6 posts in this topic

How reliable is the upgrade. I'm looking at a 600 with a 628 kit. The bike has a xr 400 cooler on it.

thanks,JIM

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Great motor, 4th and 5th gear rev to the moon. Stay with the regular compression piston, the high comp is easy to stall in tight tricky stuff. I had the HRC kit.

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The XR donk is reliable until you really modify the heck out of it. Just a big-bore kit and maybe a different muffler wont hurt, but bikes that are heavily modified with a warm cam, porting, pumper carbs as well as a 628 kit are getting to the point where the big-end bearing/rod and tranny cant handle the HP.

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