engine upgrade for 1973 220d - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 11-28-2006, 03:01 PM Thread Starter
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engine upgrade for 1973 220d

I found a 5 cylinder non turbo from a 1976 300d with a auto trans. With that motor fit in my 1973 220d with a 4 speed manual. I'm mainly wondering if the thing will bolt up and if the motor will physically fit. will the drive shaft work or will I need a custom one made.
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post #2 of 8 (permalink) Old 11-30-2006, 08:46 PM
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It will probably work. But why?
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post #3 of 8 (permalink) Old 12-01-2006, 06:49 AM Thread Starter
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why do it

The body on my 220d is perfect. to see a perfect rust free, dent free mercedes in North Dakota is amost unheard of. Also the 220d is a manual where as the 300d I found is a auto. I'm looking for a reliable, fuel efficient comforable riding car and I like the 220d for these qualities. but alittle more power would be helpful. The motor in my 220d is shot and if I must rebuild a motor anyway, I figure why not upgrade if you can. I thought of one more question, If the 300d is a auto and mine is a manual. Will the 220d flywheel match up with the 300d crank. Thanks for any info.
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post #4 of 8 (permalink) Old 12-01-2006, 12:27 PM
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I am doing that exact same project. I am converting my W115 240D to a 300D with a manual 4 speed since the 240D engine is tired. You will need to get a heavier flywheel since the 220D flywheel has much less rotational inertia than the 300D equivalent. It can be done but the engine will decelerate faster between shifting. You will also need to fabricate the motor mounts and cut the driveshaft and the shift rods.

I have rode in a 220D with a OM617.910 with a turbocharger and manual transmission and it's pretty darned fast even with a 2.88 rear end.

1977 - W116 - 6.9
1974 - W115 - 240D /8 - 4(M) OM617.910 + Turbo + 300D FW - Completed 7/8/10
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post #5 of 8 (permalink) Old 12-01-2006, 07:05 PM
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Originally Posted by diametricalbenz
a 2.88 rear end.
2.88 rear end!? I must have one! Where did it come from!? Give yours to me!
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post #6 of 8 (permalink) Old 12-01-2006, 09:45 PM
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2.88 rear end!? I must have one! Where did it come from!? Give yours to me!
It's not mine. It's a mechanic's car. He has a 220D he featured in 1973 Road and Track when he turbocharged a 220D and it chopped 10 seconds off the 0-60 meaning 27 to 17 seconds!!!

Since he has put a turbocharged 617.910 engine and a 2.88 rear end. I think it's too high for everyday driving but I only got to ride in the fastest 220D around.

He also has the same setup in a powder blue W111. Very unique although it loses its originality.

1977 - W116 - 6.9
1974 - W115 - 240D /8 - 4(M) OM617.910 + Turbo + 300D FW - Completed 7/8/10
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post #7 of 8 (permalink) Old 03-06-2010, 11:53 PM
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Hi,
do you have some picture and more detailed information about the turbo conversion?
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post #8 of 8 (permalink) Old 03-07-2010, 03:19 AM
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Originally Posted by diametricalbenz View Post
It's not mine. It's a mechanic's car. He has a 220D he featured in 1973 Road and Track when he turbocharged a 220D and it chopped 10 seconds off the 0-60 meaning 27 to 17 seconds!!!
Only a die-hard dieselhead would find the above not only exciting, but worthwhile as well. I mean, that's like going from slower than molasses to slow as molasses.

Felicita e un bicchiere di vino con un panino.
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