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Old 21-09-2011, 15:15   #1
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Graymarine 4-112 Rebuild Parts

Hi Everyone
I'm a new member with a good old boat. Ross William is a Glander 33 ketch built arround 1962. She is one of 19 hauls shipped from the factory, in the keys of Florida , to detriot.Naturaly she was powered by a detriot engine made by the Graymarine company. The engine seems to run well but now has developed an oil leak into the bilge. i pulled the engine out and can see the wet area arround the output shaft. I read a post last night on this site from a guy who rebuilt his 4-112 and would realy appriciate it if he, or anyone else could direct me to a parts supplier for these engines.

Thanks Ron
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Old 21-09-2011, 15:34   #2
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Re: Graymarine 4-112 rebuild parts

Go to http://www.graymarineparts.com/
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Old 21-09-2011, 16:40   #3
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Re: Graymarine 4-112 Rebuild Parts

I never heard of a 4-112. 4-53, 4-71, 4-110 but I'm not sure about that either, I know they made a 6-110 - had one of those in a fishing boat I once owned.
You've got me scratching my head!?
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Old 21-09-2011, 17:03   #4
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Re: Graymarine 4-112 Rebuild Parts

If the engines you named are graymarine then a supplier of their parts would have what I need
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Old 21-09-2011, 17:13   #5
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Re: Graymarine 4-112 Rebuild Parts

Google up "greymarine detroit deisel parts" on your computor and see what you get.
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Old 21-09-2011, 17:32   #6
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Re: Graymarine 4-112 Rebuild Parts

You're talking apples and oranges here. The forementioned engines are all Detroit Diesels made by GM. The OP is talking about a GreyMarine 4-112 which is a marinized Continental block used in various fork lifts, gen sets and such. Armed with the knowlege of it's true identity I was able to get piston/ring set, all engine gaskets, main and rod bearings etc. and did a complete rebuild on mine for about $800 including turning the crank and resurfacing the cam. Now depending on which gear box you have hung on the thing, you will be looking for a new seal for that, not the engine itself. Mine was a mechanical Paragon gear, and I was able to replace all the seals and bearings except one that was a peculiar to Paragon and no longer available. But you can still buy the balls and replace them in the races, and that bearing was only used in reverse anyway. I used it for a year and replaced it with a diesel. It's for sale if anyone is interested.....
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Old 21-09-2011, 18:26   #7
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Re: Graymarine 4-112 Rebuild Parts

could you please name a supplier of these parts you found for your rebuild?
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Old 21-09-2011, 19:02   #8
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Re: Graymarine 4-112 Rebuild Parts

Try these guys http://www.continentalengineparts.ne...Parts_List.pdf. Your model is a Y4112 I believe. Also, bear in mind that Graymarine mounts the reverse gear on what is normally the front of the engine. So the seal behind the flywheel is really the rear oil seal, and a major pain to replace. You need to remove the crank to do it. Also, once again, the output shaft seal is not a Continental part so you won't find it at this website. But it will be a standard seal you can get from any bearing house.
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