Quote Originally Posted by chazza View Post
Check also the ignition timing - too much advance will cause over-heating,

Cheers Charlie
Other way - too much advance causes pinging, but too retarded causes overheating.

I remember when I was a small boy someone pointed out to my father one night that the engine of his Ford T was on fire. It wasn't - the bright light was the exhaust manifold, as the link from the spark control lever to the timer had fallen off, leaving the timer fully retarded.

John