Originally Posted by jorden1979
At an idle I heard a ping/metal on metal sound. When I ride sled i can feel it pulling itself then lets go and pulls again over and over etc..I have ruled out the clutch cause I took the top half of the engine apart and went through it good and found the top of left cylinder was hitting the head it seemed. On the head its seems as though hair line fractures have appeared. What causes that to happen and what should I do and what parts should I replace to get it back running again...
I removed the pins and they looked good but the top of the piston on left side is got some good dings and the cylinder head has some pretty good ones also. On the flipside of the cylinder head are stress cracks. I ordered a new top end kit and a new head. everything i need to rebuild top of motor. Any tips, How do I clean inside the crank case properly