Information on one cylindar Gray Marine? - SailNet Community

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Old 11-29-2008
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Information on one cylindar Gray Marine?

I'm looking at a boat with a one-cylinder gray marine inboard and I was wondering if there are any good sources of information on them online. I googled it and found that most websites considered them antiques! Are they reliable? are they expensive to replace parts? Are they simple to work on? Are they half-way efficient? I don't know the year, and unfortunately I don't have an photos. Thanks.
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Old 12-03-2008
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I may not be much help, but, you have no others help, so...............
I doubt this as easy to fix (parts and their cost) as something newer, but, if I had one, I would tinker with it and use it if it would run 1/2 decent and not blow my boat up.

This link may be good, you going to need to browse around;
Old Marine Engine
Notice this link at the same web-site (You may learn more, asking here);
Old Marine Engine: Gray Motor Co - early 1 and 2 cylinder

Scroll to bottom, you may have a GM-71
Gray Marine Engine Manuals, Grey Marine
The manual may be worth more than the engine. If you have a good mechanical knowledge, I feel you should be able to work without a manual. Though torque specs are nice.

This next article tells of what someone do to rebuild one;
Gray Motor Company Antique Marine Gas Engine
All the rivers run into the sea, yet the sea is not full.
Ecclesiastes, 1:7
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