Unstyled A Pistons

Earl T

Member
Good Morning guys. Working on a Unstyled A and I have a set of .045 over pistons from a 60 on the shelf. I was looking at putting them in my unstyled A. My questions is. How will this tractor be to start by hand with the added compression? My biggest concern is being able to hand start it when I get done. Thanks
 
You will be able to start it. Pistons will come about half way past the spark plug hole. The wrist pin bushings for the unstyled A will need to be resized to fit the 60 wrist pins.
 
Looks like I just need to relieve the notch that is already there a little deeper for flame travel then?
 

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