Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-13-2013, 10:32 PM
Registered User
 
Join Date: Feb 2012
Posts: 48
Curious on w110 engine swaps..

For those knowledgeable in Mercedes engines through the years.. I began to wonder.

What engine(s) choices would be be fairly easy swapping in place of a OM615 in a w110? I was thinking a M102 from a 190E would be a good compromise of efficiency + power. The downside are the resulting impacts..

* Can the diff handle the extra power from the M102?
* What tranny options would I have? I like to keep it manual.

I love the car, but just want more power in these modern times to make it more livable. That and I'm tired of warming glow plugs

Feel free to add your own thoughts. Thanks all!

Reply With Quote
  #2  
Old 07-14-2013, 08:19 AM
wbain5280's Avatar
Registered User
 
Join Date: May 2001
Location: Northern Va.
Posts: 3,386
Mercedes came up with the 230 which had an M180 6 cyl. Several modifications were done, the radiator was moved forward and an expansion tank used. As for you performing an engine swap, a modern day V6 or V8 would probably fit. You would then have to use the rear axle from a 280SE 4.5. Your idea of an M102 is a good one if you want to keep it all Mercedes.
__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.
Reply With Quote
  #3  
Old 07-14-2013, 12:59 PM
Registered User
 
Join Date: Feb 2012
Posts: 48
Quote:
Originally Posted by wbain5280 View Post
Mercedes came up with the 230 which had an M180 6 cyl. Several modifications were done, the radiator was moved forward and an expansion tank used. As for you performing an engine swap, a modern day V6 or V8 would probably fit. You would then have to use the rear axle from a 280SE 4.5. Your idea of an M102 is a good one if you want to keep it all Mercedes.
Definitely think keeping it all Mercedes would be the way to go. Would the M102 still require an upgraded rear axle? I'm thinking it would since I'd be doubling HP and torque.

Thanks for entertaining the question.
Reply With Quote
  #4  
Old 07-14-2013, 01:11 PM
Registered User
 
Join Date: Jun 2011
Location: Las Vegas, NV
Posts: 348
Any M 180 family engine will bolt up to your transmission, including the M110.
The M121 and M115 4 cylinder engines will to.

If the engine in your car is original, it is a OM 621 with 55 HP.
Consider a 1980 on OM 616 with 72 HP.
By far the most easy swap, and if you use the 1980 on pre glow system, your glow time will be cut to 1/10th of what it is right now.
The OM 617 will also bolt right up, just some more modifications.
__________________

76 240 D. Bought in 1998 for $25.
85 300D. Got it for free with a bad engine. ( Sold )
60 Unimog 404. What was left of it, was given to me. Now powerd by 617A.
88 560 SEL. Bought without engine and trans. Now powerd by 617A.
67 250 SE. Cuope. For resto or sale.
64 220SE. For resto.
Reply With Quote
  #5  
Old 07-15-2013, 11:46 AM
Registered User
 
Join Date: Apr 2013
Location: Miami, FL
Posts: 84
Hi Zbetham (ck sp). I have a W110 with a L6 (2.3L) gas motor and 4 speed gearbox, and it's a tight fit up front. As someone said in a previous post, due to the length of the engine and the short nose of the car, the radiator is moved forward and under the bonnet latch / slam panel. The shape of the radiator looks unique to me, to fit in the given space, so I don't think one from another MB will fit. The fan is very close to the radiator, about an inch from it.

I have also been contemplating an engine swap, because no matter how much power we have (about 105 hp in my case), it never feels like enough. I have looked at the M110 motor, but it seems longer than what I now have due to the mounting of the distributor and the crankshaft pulley (balancer / dampner plus 3 grooves). As it now stands, I had to remove the radiator to be able to put a socket on the crankshaft nut to turn the engine. There's just no room up front fot a L6.

Incredibly, old MB V8 (3.5L / 4.5L) from the late 1960s / early 1970s are longer than the L6, so forget those as well. The engine bays are wide though, so a newer, shorter V8, V6, or 4 cylinder MB motor should fit but may not bolt up to your gear box.

Another thread somewhere had mentioned a place called transmission adapters. I called the guy, and he said he had adapters for the OM615 and OM616. PM me if you need his number. I'm not sure if I am allowed to write it here.
Reply With Quote
  #6  
Old 07-16-2013, 01:42 PM
Registered User
 
Join Date: Feb 2012
Posts: 48
Thanks Coolvibes.

I was thinking a newer 4 cylinder MB motor would be the way to go. Your comment about the newer motors being shorter is promising. Sounds like a trip to the local junkyard is in order to get rough engine dimensions. It would be cool to get one of those supercharged 4 bangers, but could be a headache.

The part I'm most unsure about is the limits of rear axle. At what point do I have to worry about sourcing a new rear.

All just pie-in-the-sky dreaming at the moment.. but it's sounding do-able.
Reply With Quote
  #7  
Old 07-17-2013, 12:01 PM
Registered User
 
Join Date: Apr 2013
Location: Miami, FL
Posts: 84
The axle in your car (and mine) probably has a 4.1:1 ratio diffential in there now. My car has about 100 hp, so knowing MB, I think it should be strong enough to take up to 150 hp. That being said, I don't feel this axle would live long behind a 150 hp V8 with lots of torque, and many jack rabbit starts.

Depending on the engine you are putting in, you may want to consider a stronger "bolt in" rear end from a W108 bodied 4.5L V8 car. Those come with a 3.27:1 ratio diff and disc brakes. You would need to upgrade to 14" rims to use this rear end though.
Reply With Quote
  #8  
Old 07-17-2013, 02:07 PM
Registered User
 
Join Date: Feb 2012
Posts: 48
Quote:
Originally Posted by Coolvibes View Post
The axle in your car (and mine) probably has a 4.1:1 ratio diffential in there now. My car has about 100 hp, so knowing MB, I think it should be strong enough to take up to 150 hp. That being said, I don't feel this axle would live long behind a 150 hp V8 with lots of torque, and many jack rabbit starts.

Depending on the engine you are putting in, you may want to consider a stronger "bolt in" rear end from a W108 bodied 4.5L V8 car. Those come with a 3.27:1 ratio diff and disc brakes. You would need to upgrade to 14" rims to use this rear end though.
My service manual shows a 3.92:1 for the 200D. This is where the $$$ really start to add up. I'm thinking that finding a w108 rear would be hard as my local junkyards usually only have mid80s-late90s era models.
Reply With Quote
  #9  
Old 08-19-2013, 09:14 PM
Registered User
 
Join Date: Feb 2012
Posts: 48
I think I got the donor car match. To the knowledgeable masters on all things Mercedes, here's my thought.

Donor car: 1995ish c220

I'm not sure on engine dimensions just yet, but the wheelbase and track is almost perfect! It makes me think that I could take the body of the w110 and put it on the newer frame. The only downside would be going from a manual to an auto.

c220: wheelbase (inches): 105.9, front track (inches): 58.8, rear track (inches): 57.6

w110: wheelbase (inches): 106.3, front track (inches): 58.3, rear track (inches): 58.5

Thoughts from the peanut gallery?
Reply With Quote
  #10  
Old 08-19-2013, 09:54 PM
Registered User
 
Join Date: Jul 2012
Location: Mooresville, NC
Posts: 159
I am not a master but both cars are unibody, the body's are the frame. There is a front subframe but it would be easier to adapt the motor and trans to the existing body/frame. The rear end designs are quite different so to fit the newer rear would require designing and fabricating mounts.
__________________
1968 230 W110
1985 300TDT W123/S123
Reply With Quote
  #11  
Old 08-20-2013, 10:39 PM
cth350's Avatar
Registered User
 
Join Date: Dec 2000
Location: Long Island, NY
Posts: 3,840
if you are an ace welder with time on your hands, you can regraft the bottom of one car into the other most likely.

Ron has pointed out many times that the multi-link rear suspension for a W124 or W201 car can be grafted into any of the 60s cars.

For a swap that doesn't involve welding of the car, stick with a 4 or 5 cylinder motor and a rear end from a slightly newer W108/W111 car if the current rear ratio isn't good enough. Don't worry about the torque rating unless you're going to stuff a 6.3 or 6.9 in there.

-CTH

Reply With Quote
Reply

Bookmarks

Thread Tools
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 10:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page