The Ford Barn

DWester · 12-13-2014, 11:57 AM

Well, I'm finally getting back to this rebuild and have a question on the pistons. This motor is a 1948, 59a with a 8ba rotating system in it. The cylinders are stock/standard 3 3/16th as are the pistons. When I disassembled it, I did notice that there were two pistons unlike the others. They are like the one on the right in the photo. The rest are like the left one. I noticed the difference in thickness between the compression ring groves and the thinner lower ring grove on the one to the right. The right one also measures to be a slightly taller piston from the pin to the top. A couple of the other six say Mercury inside.

My problem now is trying to find two standard pistons to match the six I have so I can order the right set of rings. Anyone have a couple of these laying around? Haven't found anything in my search so far.

12-13-2014, 11:57 AM	#1
DWester Member Join Date: Sep 2013 Location: Fort Jones, Calif Posts: 94	Piston question Well, I'm finally getting back to this rebuild and have a question on the pistons. This motor is a 1948, 59a with a 8ba rotating system in it. The cylinders are stock/standard 3 3/16th as are the pistons. When I disassembled it, I did notice that there were two pistons unlike the others. They are like the one on the right in the photo. The rest are like the left one. I noticed the difference in thickness between the compression ring groves and the thinner lower ring grove on the one to the right. The right one also measures to be a slightly taller piston from the pin to the top. A couple of the other six say Mercury inside. My problem now is trying to find two standard pistons to match the six I have so I can order the right set of rings. Anyone have a couple of these laying around? Haven't found anything in my search so far. __________________ Darol