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  #16  
Old 12-12-2005, 05:36 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
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yes

and you may need a different one as they only adjust so far before you need one that is shorter. the mount holes are on tracks that get closer together toward the rear of the car. the 300 will sit further back at this point. so you may need the shorter bracket.

tom w

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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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  #17  
Old 12-14-2005, 01:41 AM
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what car is this?

Here is a link to the car with the 5 cylinder turbo engine that I might be purchasing to put the engine my 77 240D.

http://static.flickr.com/28/65904522_012548436d_m.jpg

I was wondering if someone could clear up what the car model actually is because of the debate of whether or not the 79 300D had a turbo or not? If it is a 300SD will the tranny crossmember still work swapping to my 240D or will I have to possibly modify mine to work. I know the SD's are longer, but are they wider too?

Thanks,
Glenn
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  #18  
Old 12-14-2005, 01:59 AM
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I cannot comment on the parts interchangeability, but the car in that pic is a 300SD, W116 chassis model. As opposed to a 300D W123 chassis or a later 300SD W126 model.

i *knew* the 1979 300D wasn't gonna be a turbo!!!
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  #19  
Old 12-14-2005, 02:01 AM
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Tranny gearing is different, as well as the rear end gearing. It will still "work" with this difference in gearing, but might not yield the results you're hoping for. I think the driveshafts are different also, but I'm not certain.

I've heard that the flywheels are balanced differently, but this has been a subject of much debate: Both as to whether they are actually different or not, and also as to whether it really matters or not....

Vacuum lines will be different, probably some minor wiring changes to make.... and obviously the front part of the exhaust as well.

Also, the 116 has a different radiator and oil cooler, so the oil cooler lines will be different, and the transmission cooler lines as well, and also probably the radiator hoses.

Mike
__________________
_____
1979 300 SD
350,000 miles
_____
1982 300D-gone---sold to a buddy
_____
1985 300TD
270,000 miles
_____
1994 E320
not my favorite, but the wife wanted it

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Last edited by mikemover; 12-14-2005 at 02:09 AM.
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  #20  
Old 12-14-2005, 02:05 AM
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Quote:
Originally Posted by glenn1179
Here is a link to the car with the 5 cylinder turbo engine that I might be purchasing to put the engine my 77 240D.

http://static.flickr.com/28/65904522_012548436d_m.jpg

I was wondering if someone could clear up what the car model actually is because of the debate of whether or not the 79 300D had a turbo or not? If it is a 300SD will the tranny crossmember still work swapping to my 240D or will I have to possibly modify mine to work. I know the SD's are longer, but are they wider too?

Thanks,
Glenn
By the way....

What is the condition of the remainder of that black SD? And where is it, and is it for sale also, or just the engine?

thanks,
Mike
__________________
_____
1979 300 SD
350,000 miles
_____
1982 300D-gone---sold to a buddy
_____
1985 300TD
270,000 miles
_____
1994 E320
not my favorite, but the wife wanted it

www.myspace.com/mikemover
www.myspace.com/openskystudio
www.myspace.com/speedxband
www.myspace.com/openskyseparators
www.myspace.com/doubledrivemusic
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  #21  
Old 12-14-2005, 07:20 AM
t walgamuth's Avatar
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differnt stuff

radiator, oil cooler (i am not certain but pretty certain), driveshaft, speedo, rear end, exhaust, cross member (tranny).

this swap has been done by folks who visit here. i dont know what all is swappable from the 116 to the 123. perhaps a 123 300dt would be a better candidate.

hopefully someone who has done this will chime in ad tell us which parts will work from 116 to 123.

the ones i am pretty certain of are engine, tranny and rear end. the others i am not certain.

tom w
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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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  #22  
Old 12-14-2005, 09:00 AM
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Quote:
Originally Posted by RobTheMod
I cannot comment on the parts interchangeability, but the car in that pic is a 300SD, W116 chassis model. As opposed to a 300D W123 chassis or a later 300SD W126 model.

i *knew* the 1979 300D wasn't gonna be a turbo!!!
Parts interchangibility is fairly minimal betwween the W116 and the W123........there are some things but most of them are small bits...best to look up a online catalog and compare part numbers.
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  #23  
Old 12-14-2005, 10:24 AM
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what if...

What if I just use the engine? Could I keep my radiator, tranny, rear end, speedo and oil cooler from the 240D? Then all I would have to custom fab would be exhaust, tranny cross member, and get a driveshaft cut. Am I on the right track or missing another big component here?

Thanks,
Glenn
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  #24  
Old 12-14-2005, 11:06 AM
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Quote:
Originally Posted by glenn1179
What if I just use the engine? Could I keep my radiator, tranny, rear end, speedo and oil cooler from the 240D? Then all I would have to custom fab would be exhaust, tranny cross member, and get a driveshaft cut. Am I on the right track or missing another big component here?

Thanks,
Glenn
That's what we're trying to tell you.

The rear end and tranny gearing is different, so the effects on engine RPM at a given speed will probably be undesirable.

Also, since the radiator, oil cooler, etc. are different, then the oil cooler lines, transmission cooler lines, etc. are going to be different.

Mike
__________________
_____
1979 300 SD
350,000 miles
_____
1982 300D-gone---sold to a buddy
_____
1985 300TD
270,000 miles
_____
1994 E320
not my favorite, but the wife wanted it

www.myspace.com/mikemover
www.myspace.com/openskystudio
www.myspace.com/speedxband
www.myspace.com/openskyseparators
www.myspace.com/doubledrivemusic
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  #25  
Old 12-14-2005, 01:57 PM
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Join Date: Mar 2005
Location: St. Louis, MO
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84 SD into 83 240D

I know its 126 --> 123, not exactly the same, but I did keep the 240D radiator. The engine runs a tad hotter than the orig. 240D, it hovers around 90-100 instead of around 80-90. I installed a universal radiator overflow tank which has done its job well. I used the SD oil cooler, but had to fabricate a holder since it was larger than the original 240D oil cooler. Check your oil cooler lines - with the engine out its a good time to replace them if need be. I'm not sure where your A/C in the 116 body is located, but between the SD and the 240D the components were on opposite sides, so neither set of hoses worked. We had some custom fabricated at a local shop cost about $60, and did some creative securing to route them - with a working compressor the A/C works great. Had to use the engine mounting arms from the 240D, as the ones from the SD were too wide. The transmission cross member was shifted back, there is a post called "Auto to manual transmission has begun" or something to that effect which was our bible when doing this that has some pictures of the mods to the crossmember and how it was shifted. Definitely remove that redundant engine mount - we missed that and it punctured my oil pan. (no engine harm done fortunately) I kept the exhaust from the SD. Once again the center pipe had to be shortened, but amazingly there was space for the catalytic kidneys (not sure if that's the setup for the 116), however we had to weld on several custom brackets to get everything to secure. That's one area on my car that needs some tweaking still. I swapped out the rear differential to a 2.88 from an 85, and it has helped a great deal with highway driving. If you are doing all city driving, it might behoove you to keep the stock diff. Swapping the diff has made my speedometer read off, I plan on getting a ratio adaptor at some point to make it right. The driveshaft was shortened by 10.65 cm, we kept the 240D flywheel, since I was putting my existing manual tranny behind the new engine. It took a bit of figuring to hybridize the electricals (like engine temp, etc.) and the vacuum lines. Label everything! lines, connectors, nuts, bolts, if it comes off, put it in a baggie and label it. Take pictures of connections. (mechanical, electrical, vacuum, whatever) And buy lots of kitty litter.

These links were invaluable

auto --> manual thread

Online mercedes manual site

hope this helps.
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  #26  
Old 12-14-2005, 06:36 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
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you will not be happy

with the original 240 diff. a 308 like in most 300turbo diesels will work well. or possibly a 336 from the 190. i am not certain that the 336 is a bolt in. most folks doing the 300turbo into 240 are happy with the 308 gear. and you can get a speedo to match.

tom w
__________________
[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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  #27  
Old 12-14-2005, 07:22 PM
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I would say go with the 3.08 at the lowest!

For this swap to work the best for you, it would be beneficial to find a wrecked 300D Turbo or find one that is missing its motor and tranny, so that you can rob the Crossmember, Diff, Driveshaft, Exhaust, and other misc. small things for the swap. As pointed out earlier, the 116 and the 123 are not interchangable cars...

Plus...the 116 SD's are getting really rare, so if I were you, I would buy the car and just drive it...even if it just has a little bit of rust...big deal...
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  #28  
Old 12-15-2005, 12:19 AM
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can't just drive it

I don't think the it is no longer safe to just drive. The rear suspension is got significant rust holes that it may separate from frame any day now. In addition to the body cancer, the interior is a mess...no back seat and it has been basically disassembled including the dash while the guy was chasing vac leaks. He also lost most of the pieces.

I must have asked too many questions because he no longer responds to my attempts to contact him.

Glenn

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