Topklasse Discussion Board  
Home Forum Legal/Privacy Media/Picture Gallery Websites and Links Technical

Go Back   Topklasse Discussion Board > THE CRAFTSMAN - TECHNICAL DEPARTMENT > MECHANICALS

MECHANICALS With a 30 year-old automobile, there will always be discussion here - maintenance, modifications and mechanicals.

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 29th December 2009, 08:20 PM
Lukas Lukas is offline
Connoisseur
 
Join Date: May 2008
Location: Canberra
Posts: 655
Default Engine Swap: M116 from w116 Replacing M110 in w123?

Hi all,

One of the options I keep pondering for the rusty 350SE is, rather than extensive body repair that it needs, just sticking the (good and low mileage) euro M116 engine into another, good body. The obvious choice is of course another w116; but it just occurred to me that the w123 uses the same(?) M110 engine as the w116, so does that mean that:

a) The M110 and M116 have the same mounting points, and thus by extension.....
b) An M116 could be put into a w123?

What about the transmission? Diff? Instruments?

This has been spurred on by this ad: AllClassifieds, although there is definately no rush - just a hypothetical at this stage.

Ta

Lukas
Reply With Quote
  #2  
Old 29th December 2009, 09:59 PM
SELfor50's Avatar
SELfor50 SELfor50 is offline
Aristocrat
 
Join Date: Feb 2008
Location: Capitown
Posts: 1,200
Default Re: Engine Swap: M116 from w116 Replacing M110 in w123?

Quote:
Originally Posted by Lukas View Post
Hi all,

One of the options I keep pondering for the rusty 350SE is, rather than extensive body repair that it needs, just sticking the (good and low mileage) euro M116 engine into another, good body. The obvious choice is of course another w116; but it just occurred to me that the w123 uses the same(?) M110 engine as the w116, so does that mean that:

a) The M110 and M116 have the same mounting points, and thus by extension.....
b) An M116 could be put into a w123?

What about the transmission? Diff? Instruments?

This has been spurred on by this ad: AllClassifieds, although there is definately no rush - just a hypothetical at this stage.

Ta

Lukas
Anything's possible. Just depends on your budget.

Seriously though, Chris from MB Spares has mentiond previously he's wanted to put a short stroke M117 5.0L in to a 123 of his.
I don't see any reason why with a little bit of creative puzzle work you could fit it for sure.

I'll be back in the shop tomorrow to clean up, if you like I'll throw it open for comment.

Cam.
__________________
If everybody is thinking alike, then somebody isn't thinking - General Patton

1978 W116 - 450 SEL - Finally locked
1979 W116 - 450 SE 6.9 - New Ticker
Reply With Quote
  #3  
Old 30th December 2009, 09:00 AM
John S John S is offline
Connoisseur
 
Join Date: Feb 2008
Location: Sydney
Posts: 640
Default Re: Engine Swap: M116 from w116 Replacing M110 in w123?

A number of Mercedes bodies using different sized engines have alternate mounting points already built in for the rear gearbox support and the front supports, eg the W109, W116 etc, but the W123 was never available with a V* option, only straight 4 or 6 cylinder engines. Consequently you may have to make up a number of unique mountings and supports for the swap you want.
Reply With Quote
  #4  
Old 30th December 2009, 12:15 PM
B13 B13 is offline
Connoisseur
 
Join Date: Feb 2008
Location: Victoria
Posts: 686
Default Re: Engine Swap: M116 from w116 Replacing M110 in w123?

A few months ago in Mercedes Enthusiast UK magazine some lad had installed a 560 engine into his W123. Its mainly all bolt-in besides some custom engine mounts and an obviously custom exhaust system.

I.
__________________
6.9 #5440 = 20189H , Falcon GT BF2 # 620 = VMB 690
Reply With Quote
  #5  
Old 30th December 2009, 09:18 PM
SEL_69L's Avatar
SEL_69L SEL_69L is offline
Aristocrat
 
Join Date: Feb 2009
Location: Sydney, NSW, Australia
Posts: 1,113
Default Re: Engine Swap: M116 from w116 Replacing M110 in w123?

Probably a nicer swap would be the ALLOY M116 or M117 from a W126. The W123 would have approx. the same weight over the front wheels as with the old M110 engine, and so the turn-in response from the steering would be less obviously affected. The braking ability would be less obviously affected also.

I have inquired some years ago about engine and gearbox mounts, and they are surprisingly cheap to fabricate. At that particular time, I was chasing up the possibility of fabricating suspension blocks for my 6.9. If I remember, at the time, it was going to cost me about $350 for a set of four. A much greater problem to overcome may be mods. to sheet metal in the engine bay or the firewall.

I came across a chappy recently, ( does not contribute to any website that I know of), who said he had a very good 450SLC, which had a ruined engine removed. He has installed a 5.4 litre quad cam Ford engine transmission and back axle. Has spent about $25,000 so far, and estimated about 6 months from completion. When asked why a SLC?, said that he just always loved the look of them. This way, I guess, he still keeps all of the electronics integrated. The way I see it, he still has a Ford, just a nice looking one.

Last edited by SEL_69L; 30th December 2009 at 09:28 PM.
Reply With Quote
  #6  
Old 5th January 2010, 12:00 PM
Lukas Lukas is offline
Connoisseur
 
Join Date: May 2008
Location: Canberra
Posts: 655
Default Re: Engine Swap: M116 from w116 Replacing M110 in w123?

Hi all,

Thanks for the info - John S' statement about no V-engines in the w123 is what more or less occurred to me over the holidays, so the consensus of "possible, but with some customisation likely required" sounds reasonable.

Ta

Lukas
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
W116 and W123 same front seats? B13 MERCEDES W116 11 13th March 2009 11:25 AM
transmission swap john erbe MECHANICALS 0 28th February 2009 02:03 PM
Replacing the Alternator gerodan MECHANICALS 7 22nd October 2008 03:36 PM
Some thoughts on the M110 engine(s) Des MECHANICALS 13 20th September 2008 10:24 AM
LS1 inspired M116/M117 Engine Overhauls!! SELfor50 MECHANICALS 1 29th May 2008 06:10 AM


All times are GMT +10. The time now is 08:40 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright Topklasse 2017