2002 ported CR250 engine

[OConnor Racing]

Ported 2002 CR250 off to South Dakota. Full engine re-build kit supplied by Motorsports Nation. CR250 head mod, base cut and power valve service.

 

[bummer981]

Damn, Boss you been busy. Not even income tax season yet.

 

[jus_me]

That's a good chunk of change right there in work + gaskets, bearings, seals etc.. Would like to see the bike it's going in. Not knowing much about the cr250 so bare with me here im a student to 2 strokes, but was the exhaust timing lowered to increase compression, and or bottom end?? (trail bike?). Then head work needed to be done to fix squish and as well as working on the transfers to fix port timing from cylinder being lowered? Thinner base gasket also? prob not since everything was worked in?

 

[Awk08]

did you supply anything to help hold the rider onto the bike ?