CAN I ADD TURBO?? W123 1979 300CD nonturbo - Mercedes-Benz Forum

 
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post #1 of 3 (permalink) Old 06-26-2013, 11:18 AM Thread Starter
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Vehicle: MB 1979 300CD non turbo, '89 Suburban, 3.9L Cummins, 475 turbo trans from 1.5 ton '96 bread truck
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Smile CAN I ADD TURBO?? W123 1979 300CD nonturbo

I am a newbee to this site and need some help from the collective knowledge of your members.
Please help me turbo my non turbo engine.
My Mercedes Benz is a 1979 300CD that I just bought two weeks ago.

The IDI om617 diesel engine is in great shape with 230,000 miles and very little blow by.
This engine is a non turbo engine, the book rates it at 70hp.
The numbers on the front of the block are 617 016 0301, and at the drivers side behind the injection pump 0110901,
then just below that number is 10G 180 I believe.

I want to turbo charge this engine and bring it up to the 120hp rating that the 1982 thru 1985 300CD turbo engines have.

I recently bought the engine, turbo parts and manifolds needed from a 1984 300CD turbo donor car.
The engine has a blown head gasket so the owner just replaced the entire engine and trans.
I also have the injector pump and injectors for this same engine.
The numbers for this donor car were only at the front of the block 617 016 0381, (the 8 may be a 1 or a 0).
Just below those numbers is the number 84.

Are the engines close to the same? Will this be a straight upgrade to turbo my non-turbo engine?
Can I just replace the exhaust manifold that mounts the turbo & with the turbo intake manifold that hooks up the intake?
Will I also need to use the injector pump and injectors from the 1984 donor car too?
There is also a few small diaphragm lines to hook up also.

Please help me make this a simple upgrade and explain to me how to do this properly.
Thank you for your time and useful knowledge about these om617 diesel engines.
wowbilly
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post #2 of 3 (permalink) Old 06-26-2013, 09:29 PM
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post #3 of 3 (permalink) Old 06-27-2013, 04:00 PM
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I'm no expert on the MB diesels, but you may find the following information taken from an earlier post on this site by 300DMan pertaining to using a 300D turbo on a 240D on point. I will be happy to stand corrected if it is not.


"Don' think that is a good idea.
There is no Turbo that will work Correctly with a 240D because the Engine was not designed to use a Turbocharger.

There is even a vast difference between the tubo 300D Engine and the non-turboed 300D Engines. The Turbo Models have a Huge Oil Pump, special Pistons that have a Cavity in them that Oil sprayed up into them from Oil Nozzles on the Block to cool them and the Connecting Rods and Crankshaft are stronger.
The Cylinder Head and Precombustion Chambers are also Different (to match the Pistons).
Also that huge Oil Pump is Chain Driven off of the Crankshaft while the non-turbo 300Ds have an Oil Pump driveing similar to a Gasoline Car from a worm gear drive.

Another issue is that while the Saucer Shaped part on your Fuel Injection Pump has a similar look to it. On the 240D it is there to compensate for the difference in Atmospheric Pressure at different altitudes.

The similar Part (ALDA) on the Turboed models retricts the amount of Fuel the Fuel Injecting Pump puts out until the Turbocharger causes the Manifold pressure to rise."

Best Wishes--Carl

DeutscheFahrer



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Last edited by DeutscheFahrer; 06-27-2013 at 04:02 PM.
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