#13

05-22-2026, 09:35 PM

Half-Inch Stud Half-Inch Stud is offline

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Join Date: Jul 2000

Location: BlueBell, PA or AL U.S.A.

Posts: 18,889

Valveseat inserts weaken the Chamber. Maybe let some coolant get through, after some pinging.

Never seen a PMD iron head erode or sink the valves. Tis the Cam and Lifters to concern about.

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