Hi, new to forum. I am not a professional, but I am fairly competent on things mechanical. That being said,I hope this question does not show my ignorance-In the Intek Service Manual it is stated to adjust valves @ 1/4"(6 mm) past top dead center. My question-1/4" on flywheel travel or piston travel? Be kind with your responses
3/8", 1/2" or even 3/4" beyond TDC will work too. The manufacturer just wants to make sure the cam is off of the compression relief bump. A drink straw is a safe tool to use when monitoring piston travel.