3 or 4 ring pistons

[Ken(WI)]

So... do I want to rebuild with 3 or 4 ring pistons?

 

[Bruce (VA)]

3 ring.

The design concept was that the fourth ring would reduce oil consumption. It did, but at the expense of cylinder wall wear.

Which may well be another N myth, but this one makes sense!

Ford went back & forth on flathead rings so many times I lost count. Seems to me (and I do have CRAFT) the pre-WWII V-8's were 3 ring, then post war was 4 ring & at some point prior to the OHV 239 in 1954, they went back to 3.
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