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  #1  
Old 10-15-2011, 08:04 PM
sixto's Avatar
smoke gets in your eyes
 
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617 into 123 240D?

What is the effort involved in swapping a 617 into a W123 240D MT? Does a 617 drop right in on does the transmission have to move aft so the mounts align with the frame?

Sixto
87 300D
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  #2  
Old 10-15-2011, 08:38 PM
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everything has to move back one cylinder length...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
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  #3  
Old 10-15-2011, 08:39 PM
vstech's Avatar
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it's pretty simple if you have access to a 300 for parts swap...
lemme know if you need anything!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #4  
Old 10-15-2011, 09:13 PM
sixto's Avatar
smoke gets in your eyes
 
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It's a mental exercise to determine whether it's more work and parts scrounging to convert a 300D to MT or a MT 240D to 5 cylinders. I hear things like Euro tail housings and shortening prop shafts which no shop wants to do. Avoiding such things is worth a few more hours of wrenching to me.

Sixto
87 300D


Sixto
87 300D
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  #5  
Old 10-15-2011, 09:44 PM
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MT?
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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 am finishing a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual....I also have a 427 Cobra replica with an aluminum chassis.
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  #6  
Old 10-15-2011, 09:47 PM
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Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
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Quote:
Originally Posted by t walgamuth View Post
MT?

Manual Transmission

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

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


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
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  #7  
Old 10-15-2011, 09:54 PM
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Either way it is a little work.

4 spd in a 300D. have to add the peddles, Manual FW and get it match balanced. clutch disc and pressure plate, throw out bearing and pilot bearing. add the manual shifter, shorten the 3 shift rods, shorten the DL and have it balanced.

Use the front DL from a 240 and have it shortened.
Use the trans X mount from a 240 auto.

South Bay DL in San Jose will to the MB DL.

300D engine to a 240D. just have to move the trans back, shorten the DL, add the 240 auto X mount. and add the 300D radiator, oil cooler and expansion tank.

Might want to use a higher gear ratio differential. the 240 uses the 3:69. maybe a 3:07 or a 2:88.


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

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


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
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  #8  
Old 10-16-2011, 03:41 AM
Stretch's Avatar
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LutzTD has done quite a bit of investigation into prop shaft lengths so contact him for the good part numbers and lengths.

You'll probably need a different transmission mount cross member as well... and then don't forget the final gearing on the diff...
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!

Don't leave that there - I'll take it to bits!
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  #9  
Old 02-18-2012, 07:51 AM
t walgamuth's Avatar
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I'd say the tranny conversion is simpler but not by a large margin.
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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 am finishing a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual....I also have a 427 Cobra replica with an aluminum chassis.
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  #10  
Old 02-18-2012, 09:01 AM
aaa aaa is offline
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Quote:
Originally Posted by sixto View Post
I hear things like Euro tail housings and shortening prop shafts which no shop wants to do. Avoiding such things is worth a few more hours of wrenching to me.
Shortening the driveshaft is inevitable regardless of which way you do it. Maybe you can snag a stock MT 300D one off ebay.de or something. Whats a euro tail housing?
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  #11  
Old 02-18-2012, 11:37 AM
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My understanding is that you'll also want a proper flywheel from a Euro 300D if you can get it. That would a little trickier. The Euro MT flywheel would be heavier to account for the extra cylinder. The lighter flywheel of the 240D would make for a conversion with more vibration, etc.

Sincerely,

PE
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