Compression Height of '28 Master pistons?

[Dave_B]

Does anyone know the compression height of '28 Master pistons? I bought some 40 something Olds pistons at Hershey. They are the same bore, 3.5", with the offset wrist pin and I think they might just work in a '28 Master.

Dave

[Dave_B]

Here are a couple of pictures of the Olds pistons. They are 3 1/2" bore and 4" high, same as a '28 master. The compression height on these is 2 1/4". If that dimension is close to the '28 master piston I thought it would be an improvement over the cast iron ones. which leads to the original question, what is the compression of '28 master pistons?

Dave

[pepcak]

Dave,

you may try to estimate from these pictures. Or ask the guy... Do you happen to know what Olds to look for, seems I will be in need of pistons in few months....

2 1927 Buick Master 6 Pistons 3 1 2" in Diameter | eBay

[Dave_B]

Pepcak,

It's hard to tell from the picture. I sent him a question. I'll let you know as soon as I find something out.

Dave

[Dave_B]

Pepcak,

I found out the compression height of the 28 master pistons is 2 3/16, only 1/16 different from the Olds. It would raise the compression ratio a little if you used the Olds pistons in a Buick engine, but that would be a good thing. These pistons are for the Oldsmobile '41 to '48 238 c.i. six cylinder engine.

If you are interested in them send me a pm.

Dave