1936 320 piston rings

[JoelsBuicks]

I am having a difficult time finding standard size piston rings for my 1936 320 engine. The rings for later year's 320 engines are different but I do not know in what way. I've tried the vintage buick suppliers with no luck except that Bob's does have +0.020 rings. My max wear on the cylinders is 0.0065 with minimum wear at 0.0025 and so I was really wanting to just do a hone job and go back with standard rings. Does anyone have any suggestions? Can I buy the +0.020 set and file to get the right end gap? Can I get these made? Do you know what the difference is between the 36 320 and the later years? Thanks for your help!

Joel Wilson

[Mark Shaw]

Try this:

http://www.pistonrings.net/

[michel88]

I got standard size rings for my 1940 320 cu in engine from EGGE machine. They also had new valve springs for the engine.

[JoelsBuicks]

Does anyone know what changed with the Buick 320 rings from 1936 to 1937?

Joel Wilson

[JoelsBuicks]

I think I have found out the difference between 36 320 piston rings and 37-52. The 36 has 1/8" wide rings for the top two and 5/32" for the bottom two oil rings. The 37-52 has 3/32" rings for the top two and 3/16 for the oil rings. I've tried a couple other places that were mentioned and we'll see what they come up with this week.

Thanks,

Joel Wilson