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Apologies for going a bit off-topic. Other than the radial diesel aircraft engines, the only diesels I'm aware of that Packard designed and produced, at least as a commercial venture, are the non-magnetic engines made in the 50s for U.S. Navy minesweeper service. These were turbocharged and in production from 1951 thru 1956.

packardclub.org/forum/viewtopic.php?f=17&t=478

Here's 2 photos of one, taken during the PAC National in Pontiac this year at the Proving Grounds. An idea of the size is given by the Packard IM-245 alongside. This engine restored and donated by Mr. Ole Book.

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Here's a particularly nice photo (U.S. Navy photo) of MSO-458 (USS Lucid); this class were fitted with 4 of the V-16 diesels for propulsion and 2 V8 diesels for general electrical supply. This ship is preserved and currently at the Stockton Historical Maritime Museum and well-worth a visit by those interested in Packard marine engines. Second photo courtesy of the museum.

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Yes Dave, I agree. A nice photo of a nice ship. I can't reason why but I like the design of hull and superstructure of this old minesweeper.

I actually served for 6 weeks aboard one the Packard-powered minesweepers, for my 3rd class midshipman cruise during the summer of 1972. That was the USS Esteem (MSO-438). The cruise started in Long Beach, up to San Francisco for some a minesweeping exercise with other wooden-hulled craft. On the return, liberty in Monterey, and back to Long Beach. The Packard propulsion performed flawlessly. I don't seem to recall whether it was equipped with an Ultramatic -- (just kidding, it was an Electromatic).

Dear Mr. Ozstatman

could your model be a Marmon 34 engine.
339.63 cui. Overhead-valve straight-six 74hp.
Block cast in light alloy.
No turbocharger.
But exhaust gases flow into "hot ring" atop carburetor to help heat incoming air during cold.


Mike

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Another Picture of the Marmon 34 engine.

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Ding, ding, dingy, dingy, ding!

Winner, Winner, Chicken Dinner!

Yep, would agree that it is a Marmon motor - very sharp eye there Mr. V8fan.