twin 617.951 turbo diesels in my boat - Page 2 - Mercedes-Benz Forum
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post #11 of 41 Old 10-12-2005, 11:54 AM Thread Starter
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some updates to the photo archive

I have made a few updates to the website: paintwork, before sea-trail #2 shots
and some photos of the new vibration dampener and the fit problem I am encountering.

I actually have the machine work done on the flywheel adapter, and a test fit of components last night revealed I am now only 5/32" away from a fit at this point.. not bad from the 1/2"
I had before. So its back to the lathe and mill to chamfer some edges to try and find 5/32" of clearance somewhere.

anyway check it out for those interested:

http://www.coastalboatsales.com/jfra...lery/scubaboo/

-Jason

Jason Fraley
Tampa FL

1976 Mercedes Benz 300D
1987 Mercedes Benz 300TD sedan
1984 Mercedes Benz SL300D turbodiesel
2001 Dodge Ram 3500 4x4 Dually Cummins Diesel
1974 30\' Uniflite \"Salty Dog\" sportfisherman powered by (2) 617 951 MB turbodiesels
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post #12 of 41 Old 10-14-2005, 09:29 PM
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Thanks for the update!

\'87 Mer-B 300D (220,000 miles) (sold)
\'93 Mer-B 300D (173,000 miles) (sold)
\'87 Porsche 928 (101,000 miles)
\'98 Dodge Ram quad-cab (250,000 miles)
\'2001 CLK430 Cabrio (50,000 miles)

Past cars: 1969 mercedes 250, 1981 300D, 1972 220D
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post #13 of 41 Old 01-17-2006, 12:16 PM
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Has there been any news on this project lately?

\'87 Mer-B 300D (220,000 miles) (sold)
\'93 Mer-B 300D (173,000 miles) (sold)
\'87 Porsche 928 (101,000 miles)
\'98 Dodge Ram quad-cab (250,000 miles)
\'2001 CLK430 Cabrio (50,000 miles)

Past cars: 1969 mercedes 250, 1981 300D, 1972 220D
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post #14 of 41 Old 01-17-2006, 01:23 PM Thread Starter
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nothing on the MB diesel front..

recap:
I broke the timing chain on the stbd engine second time out..
have pulled that engine, and went thru a spare engine and replaced timing chain, seals, gaskets, tensioners, etc. That engine is reattched to the marine transmission and ready to lift into the boat. I am currently working on finishing up the prep-work for painting the topsides and cockpit decks, when the prep-work is finished, and it is painted, I will re-assemble the gantry hoist around the boat and lift in the replacement engine.
then I will complete the electrical system, and its back into the water.

Jason Fraley
Tampa FL

1976 Mercedes Benz 300D
1987 Mercedes Benz 300TD sedan
1984 Mercedes Benz SL300D turbodiesel
2001 Dodge Ram 3500 4x4 Dually Cummins Diesel
1974 30\' Uniflite \"Salty Dog\" sportfisherman powered by (2) 617 951 MB turbodiesels
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post #15 of 41 Old 01-29-2006, 01:20 AM
 
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First off, I gotta say, great job on the boat, you are doing an amazing job, can't wait to see it done (and I live in Tampa, so i can *really* come see it when it's done!!)

Anyway, I just picked up a 300SD to drive, but before snagging that I was looking into cramming a MB diesel into a Jeep (still gonna do that)

One of the guys I've been discussing this with (not an MB guy, but a diesel guy in general) said that from what he had found online, that engine has its balancing parts in the automatic tranny. Since you've got rid of the slushbox, how is vibration? Could that be something I wouldn't need to worry about?

Thanks!

-brian
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post #16 of 41 Old 02-03-2006, 09:41 AM Thread Starter
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balance

I am not aware of any balancing done in the transmission (outside of its rotational parts are balanced).
the engine itself is balanced, and the flywheel is balanced as a stand-alone unit.

I am fairly certian that the entinr thing is NOT balanced as a unit..
that goes against everything that I know that is german

anyway I have run my engines without anything connected to either end of the crankshaft
including without the harmonic dampner on the front they still run very smooth
( well, as smooth as you could expect from a 5 cyl diesel ! )

additionaly in the automatic trans, the tourqe converter will soak up alot of torsional vibrations. in my marine environment I use a torsional vibration coupler in-between the engine and the marine transmission.

Jason Fraley
Tampa FL

1976 Mercedes Benz 300D
1987 Mercedes Benz 300TD sedan
1984 Mercedes Benz SL300D turbodiesel
2001 Dodge Ram 3500 4x4 Dually Cummins Diesel
1974 30\' Uniflite \"Salty Dog\" sportfisherman powered by (2) 617 951 MB turbodiesels
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post #17 of 41 Old 02-03-2006, 08:29 PM
 
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Hmmm, ok, so I shouldn't have much trouble with mating this engine to a manually tranny then? That's great news.

Thanks!!

-brian
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post #18 of 41 Old 02-06-2006, 09:11 AM Thread Starter
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flywheel

you just have to look carefully at the flywheel.

if you use the MB automatic ring gear how do you plan to connect to the input shaft of the
manual trans ?

you will need a bunch more rotating mass in the form of a heavy flywheel, or you will burn up your clutch trying to modulate the throttle on standing starts.

I would come up with a way to bolt the flywheel from the manual trans to the MB ring gear
( and possibly machine it extensivley to make this happen.

if you look at the flywheel for a manual shift MB transmission for the same engine
its about 40 lbs. vs the automatic flywheel/ring gear at about 10-12 lbs

Jason Fraley
Tampa FL

1976 Mercedes Benz 300D
1987 Mercedes Benz 300TD sedan
1984 Mercedes Benz SL300D turbodiesel
2001 Dodge Ram 3500 4x4 Dually Cummins Diesel
1974 30\' Uniflite \"Salty Dog\" sportfisherman powered by (2) 617 951 MB turbodiesels
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post #19 of 41 Old 02-07-2006, 01:34 AM
 
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Re: flywheel

Quote:
Originally Posted by jfraley
you just have to look carefully at the flywheel.
I will keep that in mind, thanks!

Quote:
if you use the MB automatic ring gear how do you plan to connect to the input shaft of the
manual trans ?
I have absolutely no idea how I'm going to do it. I won't be getting another wrangler until later this year. We'll find out then.

Quote:
if you look at the flywheel for a manual shift MB transmission for the same engine
its about 40 lbs. vs the automatic flywheel/ring gear at about 10-12 lbs
That's good to know.

Thanks!

Now I have to convince you to let me come over to your house and let me pick your brain on tuning up (beyond valves) my engine.

-brian
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post #20 of 41 Old 02-09-2006, 01:35 AM
 
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Vnice and I happen to adore the roof!
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