[Healeys] Pressure Release Valves--old versus new

[Michael Oritt]

Here's a pic of the two valves--the new one is on the left and though it
may not show in the photo there is .0010" difference in the wall thickness
which I believe allowed the new valve to expand when it got hot and jam in
the passageway, resulting in lower OP.

Best--Michael Oritt
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