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  #1  
Old 08-13-2009, 02:07 PM
moon161's Avatar
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Replace 617 with 616

Maybe replacing 617 with 616 in 77 300D Auto. Will the 616 bolt right up? or do supports have to move, linkages and driveshafts lengthen, etc.

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  #2  
Old 08-13-2009, 02:13 PM
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I'm pretty sure that changes will have to be made to the drive shaft. Though, if you can source out the front half of a 240d drive shaft, and are using a 240d transmission, it may all bolt right up.

If you are swapping in just the engine I think you'll need the front piece of a 240d drive shaft.
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  #3  
Old 08-13-2009, 03:37 PM
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So if the back end of the engine comes forward, then the tranny support moves, linkages stretch, driveshaft too. That makes it a project- not so easy then.
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82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times
It's hard to
more likely to
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have an accident
two things
when you're on
at the same time.
a cell phone.


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  #4  
Old 08-13-2009, 05:34 PM
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What's wrong with the 617, is it terminal?
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  #5  
Old 08-13-2009, 05:41 PM
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Should still be easy, as long as you find the linkages/driveshaft/support from a 240d.
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  #6  
Old 08-13-2009, 06:37 PM
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usually people go the other way around
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  #7  
Old 08-13-2009, 10:52 PM
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You may need a cross member as well. To get correct 240d performance you will want to change the diff and the speedo as well.
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  #8  
Old 08-14-2009, 12:17 AM
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Quote:
Originally Posted by t walgamuth View Post
You may need a cross member as well. To get correct 240d performance you will want to change the diff and the speedo as well.
I've darkened a suspect phrase in your post.....I don't believe it is accurate. Those two words do not belong next to each other.
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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 90k - mine - (OC-91,200)
'17 Metris(VITO!) - 18k - wifes (OC-25k)
'01 E320 Wagon - 161k - mine (OC-165,000)
'01 E320 - 180k - dad's (OC-182,500)
'07 E350 Wagon - 134k - dad's (OC-139,500)
'01 SL500 - 56k - dad's (OC-59,000)
'16 E400 4matic Sedan - 81k - Brothers (OC-88,000)
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  #9  
Old 08-14-2009, 06:46 AM
t walgamuth's Avatar
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Quote:
Originally Posted by pawoSD View Post
I've darkened a suspect phrase in your post.....I don't believe it is accurate. Those two words do not belong next to each other.
Running a 346 diff with an automatic 240d would change the acceleration from really really slow to glacial. Once up to speed I believe it probably would cruise at whatever speed you like and slightly beat a 240d with stock ratio on mpg. Crossing busy intersections and merging ramps would be an exciting adventure though.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #10  
Old 08-14-2009, 08:05 AM
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You could make custom engine mount arms for the 616 and keep the driveline stock. This would have the added benefit of moving the engine back a few inches (better handling).
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  #11  
Old 08-15-2009, 07:36 AM
t walgamuth's Avatar
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That would be a lot of work, more than altering the driveshaft. It would also put the engine back from the radiator and possibly pay havoc with the power steering and ac hoses.

I think not recommended.

A good thought though.

(The handling of a stock 123 240 is very balanced to begin with too, IMHO)
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #12  
Old 08-19-2009, 12:58 PM
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I did this swap a few years back, it helps to have the donor car around when you do it. front driveshaft, crossmember and linkages were some of the problems I ran into but I did it in my parents driveway when I was just a young MB enthusiast Two brothers who were friends of mine had the cars, the 300D threw a rod and the 240D hit a telephone pole. 240 engine into the 300 body and one of them was back on the road again

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