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Engine swap ideas for a 1979 Mercedes 240D

General engine tech -- Drag Racing to Circle Track

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gmrocket
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by gmrocket » Fri Jan 10, 2020 9:16 pm

Diesels really respond to propane or natural gas conversion because the comp ratio. Gets rid of the stink and usually increases the power

Easy conversion on the old diesels without much electronics

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by GARY C » Fri Jan 10, 2020 9:24 pm

I thought it was a national law that all swaps had to be a junk yard Turbo LS? :)
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by SchmidtMotorWorks » Fri Jan 10, 2020 11:37 pm

ptuomov wrote:
Fri Jan 10, 2020 3:17 pm
Along Kevin’s lines, how about MB M110 2.7l gasoline straight six. It’s a two-valve DOHC engine and if the emission concerns do allow, one could hot rod it a bit.
An inline 6 would be nice, I am not sure if a 6 would fit though.

I wonder what the longest engine put in a 123 is?

Looks like there was a SOHC 6.

https://en.wikipedia.org/wiki/Mercedes-Benz_M123_engine

I am going to try to find one.
Last edited by SchmidtMotorWorks on Fri Jan 10, 2020 11:41 pm, edited 1 time in total.
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by SchmidtMotorWorks » Fri Jan 10, 2020 11:39 pm

jake197000 wrote:
Fri Jan 10, 2020 8:22 pm
I think I have a Buick 215,and I don't think its stuck.im in Madison wi.will sell cheap.its complete with carb etc ,I think have to double check.
I am in CA.
The shipping would likely be expensive.
I found one in Minnesota for $300 but shipping is $400.
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by HDBD » Sat Jan 11, 2020 12:49 am

The same chassis had the 110 dual overhead cam engine in the mid 70s. It had a solex branded carb that was a carbon copy of a quadrajet. There are these motors running around with 500k + miles. One of the best. 3.5 and 4.5 v8 also rock solid. Heck the old 220s and se were amazing in the late 50s. I had the unique opportunity to work around the block from road and track magazine when I was a kid. 300sl were regular street drivers at that time. Lots of fun.

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by Leftcoaster » Sat Jan 11, 2020 3:46 am

SchmidtMotorWorks wrote:
Fri Jan 10, 2020 11:39 pm
jake197000 wrote:
Fri Jan 10, 2020 8:22 pm
I think I have a Buick 215,and I don't think its stuck.im in Madison wi.will sell cheap.its complete with carb etc ,I think have to double check.
I am in CA.
The shipping would likely be expensive.
I found one in Minnesota for $300 but shipping is $400.
1961 - 63 Buick/Pontiac/Olds 215 engines employ a unique bell housing pattern, flywheel and ring gear - - few came with manual trans and the autos were dogs
Aftermarket bell housings were available to fit GM pattern Muncie or Saginaw manual trans, and aftermarket ring gears were also produced
Rover manufactured an improved version from 1967 to 1998 in capacities to 4.6 liter, parts being interchangeable with the original BOP engine

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by swampbuggy » Sat Jan 11, 2020 8:19 am

Jon, i read through this thread quickly to see if anybody asked this question (hopefully i did not miss this question). Are you considering how much power will be available to your young son under his right foot when he starts to drive this car ? Mark H. :-k

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by ptuomov » Sat Jan 11, 2020 8:45 am

According to Wikipedia, both M123 and M110 fit: https://en.m.wikipedia.org/wiki/Mercedes-Benz_W123

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by grandsport51 » Sat Jan 11, 2020 9:24 am

Here you go I’m sure there are more
8E5833B7-97D1-4145-BB47-CF0F3A58E7E8.jpeg
8E5833B7-97D1-4145-BB47-CF0F3A58E7E8.jpeg
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by Tuner » Sat Jan 11, 2020 9:41 am

Seems like you would want to convert it to electric. https://www.alibaba.com/product-detail/ ... opping-ads

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by ptuomov » Sat Jan 11, 2020 10:20 am

M110 tuning parts...
AMG_M110 tune up kit.jpg
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by dfarr67 » Sat Jan 11, 2020 11:54 am

swampbuggy wrote:
Sat Jan 11, 2020 8:19 am
Jon, i read through this thread quickly to see if anybody asked this question (hopefully i did not miss this question). Are you considering how much power will be available to your young son under his right foot when he starts to drive this car ? Mark H. :-k
That's why i suggested 4.8ls, decent all around with adequate power.

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by rebelrouser » Sat Jan 11, 2020 12:08 pm

A ford v-8, 289 302 etc. I think is the narrowest of the the V-8's several years ago I did a 289 into a Jaguar, fit really nice. I would say this would be the best swap.
Not sure what part of the country you are in, but make sure it's old enough you can legally drive it. Federal emissions laws say a vehicle must have same engine type and emissions package as produced. Not sure of the cutoff date on the year. I had a student that built a 350 S-10, In Missouri it's up to the vehicle inspector to check general emissions when they get inspected for yearly licence. Only St. Louis area gets specific emissions testing. And most inspectors look only at safety stuff, so enforcement is not really an issue. But this student got pulled over for speeding, and the highway patrol was smart enough to know they never put a V-8 into a S-10, so he had it impounded and they would not let him drive it any more on the street.

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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by SchmidtMotorWorks » Sun Jan 12, 2020 1:29 am

swampbuggy wrote:
Sat Jan 11, 2020 8:19 am
Jon, i read through this thread quickly to see if anybody asked this question (hopefully i did not miss this question). Are you considering how much power will be available to your young son under his right foot when he starts to drive this car ? Mark H. :-k
Not actually looking for anything powerful.
I wish they were into fast cars.
Both my kids turned down new KTM dirt bike, and drivers positions on top notch Jr Dragster team.

Just smoother, quieter, not smelling like diesel and for familiar tech to work on.
I want him to enjoy points and carbs if possible.

I have been offered a 2300 Ford and a Slant six for free.

There is a 1970 gas Mercedes 6 cylinder near by I might consider.
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Re: Engine swap ideas for a 1979 Mercedes 240D

Post by SchmidtMotorWorks » Sun Jan 12, 2020 1:32 am

Pre 75 and Diesels are smog exempt in CA.
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