Late Unstyled A Pistons

Earl T · Mar 21, 2017

Looking to see what people have done for pistons in rebuilding there 38 A's. I have seen some used pistons (A2582R) that are .045 over for sale for mid year A's. Do these have more compression? I also see aluminum pistons that feature more compression on this site but are for late serial number styled A's. Those concern me because my A has the flat chamber head. Tractor is a toy and plow day use, but would like to use pistons that have a little more squeeze than stock ones that are like 4 to 1. Thanks

Mark-Ia · Mar 21, 2017

I have 60 pistons in a 38 unstyled A. Pistons come 1/2 way past the spark plug holes. Guess that's why there is a notch in them. I had the rod bushings honed to fit the later piston pins. With a big nut G carb and a Hysler head, it would dyno at 48 hp.

Late Unstyled A Pistons

Earl T

Member

Mark-Ia

Well-known Member

Similar threads