I recently installed a tb108cc stroker crank on my crf50.
It has a tb race head, piston, and cylinder along with hv oil pump.
My problem is when I start the bike up it knocks very loud it kind of sounded like the piston was making contact with something so I took the head off and piston and valves show no signs of contact at all.
Anyone have any ideas it seems to be getting worse and I can't figure it out.
It has a tb race head, piston, and cylinder along with hv oil pump.
My problem is when I start the bike up it knocks very loud it kind of sounded like the piston was making contact with something so I took the head off and piston and valves show no signs of contact at all.
Anyone have any ideas it seems to be getting worse and I can't figure it out.