Recent content by merlin

Just another thought to add to the pile. Dow Corning makes a product call MACOR which is a machinable glass ceramic. It is good to 800 deg C. It machines like steel and has good insulative qualities. Full specs can be found at their website. Not inexpensive but we wouldn't need much per plug. Tom S

Porsche 911 motors do it with 17 holes in the sprocket over 16 holes in the cam on the same bolt circle. Set the cam valve timing, find the one hole that best lines up, install a pin and lock it with a large jam nut.