Does anyone have a resource to identify this piston - there are no marking other than "Jahns". It's from a 383 I am freshening and I was curious if anyone knew the advertised compression. They are forged units which from poking around elsewhere appears to be not common for Jahns (?).

6371237-9JahnsPiston.JPG (90 downloads)
Last edited by RallyeMike; 12/22/10 01:42 AM.

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