Tb42 timing advance

[mudnut]

I advanced Jonathans timing to 20*BTDC to help it pick up faster but what i was saying to him was because the timing chain stretches with age where you've set it to 15 its actually could be 12 or 10*BTDC. The best way to test it is to advance it 5* till it pings then retard the timing by 5*

Thanks, George, that explains why my RB30 was pinging its head off after I had the timing belt replaced.