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617 Turbo into a Boat
Let me start off by saying my day job is as a boat mechanic and I have been wanting to do this for some time now. I have an old 17' Hydroswift with a good drive and no engine. The engine the boat came with was a 140 HP mercury 3.0 Liter 4 cylinder. My thought is that the 617 turbo has similar HP output but much more torque which would allow me to run a much more efficient higher pitch prop. Today at the pick and pull i found a 1983 300d with what seems to be a good motor (it will turn by hand and feels just like my SD). I asked the people in the office if i could start the motor before i pull it they said no of course so before i pull this thing I want to do a little more thinking.
I have read many places and seen people mention doing this swap into a boat but no one has ever really ended up with anything. I have a boat and will have an engine so here we go..... My thought is to use a manual flywheel out of a 240d and attach the splined coupler to the flywheel by drilling and tapping it so that it is center. Mercruiser has a very similar design where they drill and tap the GM manual flywheel and bolt the coupler too it. the next hurdle to get around is the bell housing/rear engine mount. I thought about using and modifying the bell housing that i already have from a GM v8 mercruiser engine and making some sort of adapter plate. My biggest worry is getting everything centered. The next hurdle to jump is to keep the exhaust/turbo cool as marine engine exhaust is usually cooled by water. I haven't quite figured this one out yet but it will prob involve a fan with a heat exchanger or some sort or find a marine turbo that has the water cooling fittings. What does everyone think.... Ready go!
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
#2
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A machine shop could get everything machined on center for you. It may be worth the extra expense to make sure you're rotating around the right way.
Sounds like a cool project, post pics if you do it. |
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Sounds like a pretty sweet project. If you do it, take lots of pictures and post them here!
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1979 240D with a 617 turbo diesel. |
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good question.... the Mercruiser engines are Left hand rotating engines as viewed from the flywheel...(right rotation as viewed from the front). I believe i remember that the 617 is the same way.
If i do this i will definitely post pictures and the boat is green so it would fit well if i run biodiesel in it too!
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
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Would i have to take the engine to a machine shop so they can measure it or does anyone have the technical measurements for the bell housing bolt pattern and Center of the crank on a 617? never really done this so not sure how it works
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
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I've seen pictures of a 616 or 617 in a boat. I'm betting marinized water cooled manifolds are available somewhere.
http://mercedesforum.com/forum/showthread.php?p=135004#post135004 Check out this OM 617 Marine conversion project! http://www.coastalboatsales.com/jfraley/gallery/scubaboo?page=13
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 Last edited by kerry; 04-14-2010 at 09:43 PM. |
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if you drill and tap the flywheel and attach a coupler to it, won't that throw it out of balance? you're going to have to have it balanced after you do that of course. i never heard of anyone doing this to a flywheel before. have you?
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i know Jim Smith. i don't actually know him, but I know of him
http://imageshack.com/a/img923/6201/RQ1H6A.jpg |
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Quote:
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
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there's no such thing as a flywheel that's too light. haha. i say go for it.
shoot, now that i know that little tidbit, i'd better start asking around to see who has done a 240d flywheel on an auto trans om617 and what the results were
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i know Jim Smith. i don't actually know him, but I know of him
http://imageshack.com/a/img923/6201/RQ1H6A.jpg |
#10
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Quote:
These guys also did what i was thinking ... they drilled and tapped what appears to be a normal manual flywheel; however, they are using a direct drive setup whereas i am using a sterndrive....but similar.
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
#11
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From what i have read on the manual swaps from the 240 D to the 617 there sometimes is a slight vibration because the flywheel isn't heavy enough to balance out the 5th cylinder i am assuming someone that has done a manual swap into thier 123 or 126 back me up on this.
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
#12
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Quote:
www.peachparts.com/shopforum/showthread.php?t=88699 this should keep you busy reading. Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works Last edited by charmalu; 04-15-2010 at 12:06 AM. |
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No Thread specified. If you followed a valid link, please notify the administrator" yeah, real busy
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i know Jim Smith. i don't actually know him, but I know of him
http://imageshack.com/a/img923/6201/RQ1H6A.jpg |
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As far as a bell housing, the early 123`s used an iron box trans and had a seperate bell housing. maybe one of those might work for you. I think 82 they went to the one piece all aluminium trans case. don`t see them very often, there was one last week at PNP, but think it is gone now. there is a forum member here that installed 2 617 in his boat. wish i could remember his name. Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#15
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Quote:
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1987 300D 180k 1985 300SD 330k Helga 1992 300D Lola 269k- Sold 1986 325 coupe Bessie >300k Original engine(ODO Broke) sold 2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it |
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