.020  cause a timing problem, I don't think so,
you could turn the cam 1 tooth and you would
hardly feel any if any difference.

On a different note, I got the head off the 16V
motor and the Combustion Chamber is smaller
than the 8V motor, by about 5 cc, so the compression
will be higher with the 16V head, than with the 8V,
so pistons need to be modified to lower the CR with
a 16V head.

The block on the 1.3 motor is also about 1 1/8" shorter
than the 1.6 motor, so a 1.6 engine is a tighter fit in the
Sammy.

Wild