compression on super a and cub

Average for a Cub:
around 50-60psi to run pull starting
around 60-70psi to run for electric start
around 100psi for a good engine
around 120psi for a brand new engine
 
Super A at 120 psi with gasoline head stock
for distillate about 90psi
Cubs are close of the same year possibly 10 PSI lower. Jim
 

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