Fabrication How to find TDC and make your own Piston Stop April 2, 2012 / April 8, 2014 by John Heard While putting together the engine and setting up the Jesel Belt Drive, I needed to check Top Dead Center (TDC) and when I went to look for my tool to screw into the spark plug hole, I couldn’t find it. So it was time to make a new one. Last time I took the trouble […] Read more » Home Made Tools Piston Stop TDC