if not, what happens if the valves opening cycle[s] are too close or too far from the piston, and if these are not correct, how do you fix this without choosing another cam ?
Isky use to sell valve (not sure if they still do or not
) notching tools for increasing the width and depth of the valve pockets in the pistons in the motor for 3/8 and 11/32 valve guides. The tool had a round shaft that went through the valve guide with a square tip on one end and a cutter that would fit into that guide, using an electric drill motor on the guide would make the cutter notch the piston tops
I ended up marking the guide with tape above the valve guide the amount I wanted to increase the valve notches, IE .020 to ? to whatever was needed
