Re: 01 Raptor wont start, no compression.
Took My raptor to the doctor. It had 3 bent valves. (2 exhaust and 1 intake) and the Timing chain broke. What happen is the bolts that hold the one way starter clutch on broke off and the bolt head got between the timing chain sprocket and broke the timming chain. That caused the valves to drop and the piston to hit the valves and bend them. So While i was in the engine I had a new timing chain put in and 3 new valves, went with a wiseco 11.1 piston. hotcam stage 2, hotcams valve spring kit, port and polished the head, dyno jet kit stage 2, and cut the air box open. Went with a fmf powercore slip on. Got the bike back last weekend, let me tell yall, This mf is fast. I am having to learn how to ride it again.