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Antique crank start marine inboard en...

Old Marine Engine » Unknown Engines - post here with photos » Antique crank start marine inboard engine - United States Motor Corp. « Previous Next »

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Stuart Battaglia
Visitor
Posted on Monday, April 16, 2018 - 09:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi,

I am new to this discussion board, but I am hoping this community will be able to help me with some questions I had regarding the inboard engine described below.

It is a one cylinder , crank start , inboard marine engine with a carb., magneto , external push rods and an attached transmission It is mounted on a skid , and though the original green paint has deteriorated , and there is some surface rust , when I looked in the Cylinder , the engine actually appears "NEW" internally . The engine is not seized, and turns freely.

The transmission appears to have a 3 position heavy forged steel stick lever with a forward/ neutral / and reverse position.

The only markings anywhere that I see are as follows : U.S. Motor Corp. Marine Engine , P&B Motor & Sons / Chicago , Illinois., Wico Type EK / Wico Electric Co. / Wico Elec. Co. , Springfield Ill. , (coil and /or magneto?) and "A OK-4" raised on the casting of the unit itself .That's all I see in markings .
NOTE: That in moving the skid , the cast carb manifold intake PIPE broke , and the carb and attached pipe is not presently stored with the engine , so I don't have a picture of the carb or any markings from it . I do have the carb packed "somewhere" though, and luckily the pipe sheared in the middle , so the mounting flanges on both the carb and engine cylinder are still intact on each component . It will be sometime before I would be able to get to and "find" the boxed component, however .

I bought this inboard Marine Engine with attached transmission over 30 years ago when it appeared in a VERY old shed that was being demolished in Sheboygan , Wisconsin (just blocks from Lake Michigan) . I surmise that this Marine engine was NEW and current when it was originally placed in this old shed , and sat there undisturbed until I rescued it from the demolition of the building many decades later .

Attached are some pictures of the engine /transmission / crank on what appears to me to be the original factory skid . It is just as I bought it but now with probably a century's worth of surface settled dirt and dust removed . The exposed original light green paint understandably degraded ( and some surface rust) as it currently exists .

I am hopeful ,that this community might be able to identify the vintage and history of this engine/ transmission , its performance reputation , related manuals , sales advertisements , original pricing , rarity , current value and/or any other related material or information. I would also like to know of any operation manuals , final drives , mounting designs, etc..

This is one of my first posts in any discussion board, so please forgive me if I take some time to respond or have typos/errors.

All help and effort appreciated . Thanks . Stuart..
U.S. Motor Corp. - Inboard Marine Engine
U.S. Motor Corp. - Inboard Marine Engine 2
U.S. Motor Corp. - Inboard Marine Engine 3
U.S. Motor Corp. - Inboard Marine Engine 4
U.S. Motor Corp. - Inboard Marine Engine 5
U.S. Motor Corp. - Inboard Marine Engine 6
U.S. Motor Corp. - Inboard Marine Engine 7
U.S. Motor Corp. - Inboard Marine Engine 8
U.S. Motor Corp. - Inboard Marine Engine 9
U.S. Motor Corp. - Inboard Marine Engine 10
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kevin lang
Senior Member
Username: klanger

Post Number: 126
Registered: 03-2012


Posted on Monday, April 16, 2018 - 10:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Stuart,
Welcome to the forum, I know nothing about this engine, but what a great find.
I'm sure someone here will be able to help out with the info you are looking for.
Regards
Kev.
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J.B. Castagnos
Senior Member
Username: jb_castagnos

Post Number: 1372
Registered: 07-2002


Posted on Tuesday, April 17, 2018 - 09:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Stuart, these are good running durable engines, I have a twin cylinder. Just a guess on the years, I would say most in the twenties. Use the search feature at the top to search US Falcon. They were the same as Grays and Bridgeport 4 stroke models, don't know if they were re badged or changed manufacturers.
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mike schreiber
Advanced Member
Username: wrenchguy

Post Number: 43
Registered: 03-2008
Posted on Wednesday, April 18, 2018 - 09:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

the info stamped on the us motor tag will be a great help id'ing the engine. u might want to post what it reads.

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