RidgeRunner13 wrote on 11/03/11 at 13:15:11:Next, figure out a way to make the cam gear adjustable so the cam timing can be reset to compensate for the timing chain stretch.
.010" change stretch is approx. 1° of cam retard.
oval out the cam gear mounting holes
flip the gear 180° and drill a new alignment hole
I'd go with half the allowed chain stretch.
If you would rather have finer adjustment. you could rotate the gear several times and redrill the 3 holes. Just mark the alignment hole with the advancement angle.
While you're thinking about this, you can reduce the amount of chain stretch by inventing a manual chain tensioner.