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Old 08-27-2003, 04:51 PM
jlomon's Avatar
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Join Date: Aug 2002
Location: Toronto, Ontario
Posts: 310
Engine/Transmission swap question

Would it be possible to take the 2.8 V6 and transmission from a 1998 C280 and drop it in to a 1994 C280 to replace the inline 2.8 6 cylinder and 4 speed auto? What, other than the engine and transmission, would be required? There is an engine/transmission being sold on Ebay at this link:

Which is making me wonder how feasable it would be.


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Old 08-27-2003, 08:45 PM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,741
I recommend against making any such radical changes to any modern car. The days are gone where you can drop in any engine of your choice. You'll need all the plumbing and wiring from the donor car. All the accessories attached to the front of the engine will be in a different location. And you're sure to run into a number of wires and other connections that just won't fit together. If not every electrical connection is perfectly made, you're sure to have a check engine light on all the time which means you won't be able to do any meaningful on-board diagnostics, which in turn means any hiccup with the engine will have to be blindly dealt with. Even if all electrical connections are the same, internal calibration and engine parameters would probably be different. Few people care for modified vehicles should the time come to sell the car.

It's just not worth it. Stick with original. If you want a V6 engine, sell what you have and buy a car made with a V6. It would be a lot easier in the long run.
95 E320 Cabriolet, 131K
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Old 08-28-2003, 06:35 PM
MrCjames's Avatar
California Dreaming
Join Date: Jun 2003
Location: SF Bay Area
Posts: 599
Engine Swap

Watched a friend of mine attempt to install a M104 in place of an M103 in a 124 sedan. He was very enthusiastic until he got to the Electrical part of the job.

You will need a lot of time or a lot of money to fit that engine into your chassis. With the electrical alone I would think 50 individual photos of Ben Franklin would be enticing, but not worth it!!!!!!!!
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