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1925 Gray (not Dort)


1925 Gray

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Guest noncompos

In case you weren't already aware, what appears to be your engine, shown in a 30 McCord catalog as "Gray motor, 4, Pass. Model R-O 1922-26" as a 35/8 x 4, MIGHT be the same as the marine engine ZB-Z in that catalog, the two having the same same b/s and taking the same head gasket (no other gaskets are shown for the marine engine).

A 38 Victor catalog verifies the R-O pass car engine and the marine "Z" engine take the same head gasket, but, again, no other gaskets are shown for the "Z" (This catalog has no "ZB" listing).

Std cat shows a 20 HP four for 22-25, with a 21 HP four for 1926, hopefully the same engine tweaked for one more HP.

If searching for engine parts/spares, some of the old boat/engine forums (oldmarineengine.com comes to mind) could tell about the engines. Good luck..

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