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  #1  
Old 11-13-2007, 07:30 PM
1978 w123 230c
 
Join Date: Aug 2007
Location: Timaru New Zealand
Posts: 8
engine transpant in to a 1978 w123

Hi

Ive found a 1974 230/6 motor out of a w114 and want to know will it drop into my 1978 230/4 coupe. is it a streight swap ie will the mounts match up?

good idea?

How about a 1977 280/6 w123??

A good second hand motor is alot cheaper then a recon. I know but it needs a bit more pep.

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  #2  
Old 11-14-2007, 07:41 AM
JimFreeh's Avatar
Benz addict
 
Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,366
Quote:
Originally Posted by mustard230c View Post
Hi

Ive found a 1974 230/6 motor out of a w114 and want to know will it drop into my 1978 230/4 coupe. is it a streight swap ie will the mounts match up?

good idea?

How about a 1977 280/6 w123??

A good second hand motor is alot cheaper then a recon. I know but it needs a bit more pep.


One of the possible interferences is the oil filter location, they are different between a W114 and a W123.

230/6 is an older engine style, going backwards to the finbacks. Never installed in a W123.

280/6 is a M110, and was installed in both W114 and W123 bodies. 1977 motor will be a direct swap, but you will need the driveshaft and trans linkage as well.

Jim
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  #3  
Old 11-15-2007, 10:21 PM
300SDog's Avatar
gimme a low-tech 240D
 
Join Date: Jan 2003
Location: central ky
Posts: 3,602
I never knew there were 230 6cyl engine 1974 sedans. And is your 123 recipient coupe 4cyl 230E?

Probly the greatest thing I'd be worried about is shortening length of driveshaft to accomodate space in engine bay for 6 cyl engine, nevermind trans linkage hookups and other fiddly bits you'll want from donor car. Otherwise it's true there's massive incompatabilities between 114 and 123 engine swaps including accelerator linkage, muffler pipes, motor mounts and position of oil filter as mentioned.

For what it's worth, many diesel nuts curse the fact that w123 engines m616 and 617 will not bolt straight across into earlier 115/114 chassis.
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  #4  
Old 11-16-2007, 03:03 AM
diametricalbenz's Avatar
The Crowbar of Embriage
 
Join Date: Oct 2004
Location: Marietta, GA
Posts: 3,511
Quote:
Originally Posted by DieselDog View Post
For what it's worth, many diesel nuts curse the fact that w123 engines m616 and 617 will not bolt straight across into earlier 115/114 chassis.
Grrr! I am one of them. But I am having a OM617.910 engine shoved in there so that will be one of two owners (jenseng) having already converted one to 4 speed manual.

So MAYBE in time for Christmas.

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