Re: .031 dykes
Speed Pro still sells some of those. For the bore size you have, the P/N is PB-18PF-002 -65. If they have them.
Outside of that, call Keith Jones, or Kevin Studeker at Total Seal, tell them I sent you. Total Seal no longer suggests those rings, but they may be able to make or source them.
The last set I bought had to be 7-8 years ago, in 4.320" bore size. They worked for me, despite what everyone said, that engine ran. But I don't use them now.
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Alan Roehrich
212A G/S
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