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  #1  
Old 08-31-2000, 04:29 AM
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Join Date: Jun 2000
Posts: 16
After a lot of preparation and waiting in line for a large block of time at the shop, they now tell me that the strong engine and transmission in the worn out '77 300D chassis
will not reasonably fit into the excellent '80 model that was brought in from the east.

The '77 had been sitting for a couple of years and the tech wanted to get it running and shifting properly before proceeding with the transplant. He found high compression and over all good performance though the car was coming apart at the seams otherwise. The engine had been rebuilt a few years ago. Does anyone know where the year/model line is where the transmissions and glow systems will match up with this 1980 chassis? I asked around before sending the cars to the shop and those I asked didn't see any problem. .well, there is a problem that will cost be prohibitive to work around. I would like to find someone that needs this engine and has the other. .some businesses do this but I don't know where they might be. I have a trunk full of pistons, bearings and a crankshaft as well as an oil pan and valve cover in the trunk to throw in not to mention an entire engine & fuel system (seized up) in the '80. I would like to restore the '80 and put it on the road for a while. Any suggestions would be helpful. Thanks!
Aaron

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  #2  
Old 08-31-2000, 07:57 AM
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Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Since you have both cars, I can't see any reason for abandoning your project. The glow system from the early car should be easy enough to wire into the newer car (1980 is the first year for the glow system and the vacuum control of the otherwise similar transmission).

The transmission control system for the old car is all in the linkage so there is less problem putting it in the new car than vice versa.

Probably the worse problem is the A/C compressor will have to stay York as the mounting holes aren't in the block for the GM R4 compressor used from 80 on. The only problem will be the hoses , which shouldn't be much of a problem.

Basically I would rather have the early tranny, but not the early A/C. The glow system doesn't make much diference.

It's almost plug and play, go for it.

------------------
Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician
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  #3  
Old 08-31-2000, 08:03 AM
LarryBible
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I believe that someone who knows the breed can mate the engine and transmission combination to the chassis, if these are both 123 cars. Since you have both complete cars, I'm convinced this could be done.

Your biggest problem is the change in glow plug systems. I placed a serial glow plug in my original parallel glow plug chassis temporarily. I used a window switch put in the dash for a momentary contact switch which actuates a Ford sarter relay, which is cheap and capable of handling high current, to operate the glow plugs. There is no fancy light or sensor to tell you when the engine is ready to start, but I get along with it just fine. I hope to get my original engine finished and back in the car before too long.

Hope this helps,

------------------
Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles

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