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Old 05-06-2000, 04:58 AM
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Hello fellow readers,

As u may know, I have a 1986 W124 230TE stationwagon. I have had it for a year and lately it is playing up. This afternoon, I was driving on the highway and when I stopped, the car died on me. So I called a road service place and they told me I needed a towtruck. So, I did and towed to my house. I have now just found out that that motor is totally stuffed. The motor overheated and the head gasket blew and It turns over funny and it doesnt start.

So, I am considering putting in an M103 300 motor, 6 cylinder. So here is what I want to ask:

1) Will I need to do any major changes to the car if I put in a M103 300 motor?

2) Will it cost me so much that it wouldnt be worth it?

3) What would I have to change? The muffler? The radiator?

Any help at all would be appreciated, because I really need the car be on the road!!!!



W124 230TE
W202 C200 Elegance
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Old 05-06-2000, 08:52 PM
Registered User
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
The only engine that will mate to your tranny is the 2.6 103 engine...The 3 liter version has the 722.3 tranny, yours is a 722.4...You could go with the 2.6 engine, but it will probably be more costly to change than the car is worth. If an engine swap has to be done, I'd go original and keep it simple.

Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
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Old 05-07-2000, 11:17 AM
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In my experience the best and maybe only way to do an engine swap like this, is to have the entire car that the engine comes out of. In this way you have all the little brackets, wiring harnesses, etc. If you had a donor car for this, maybe you could take the transmission from the donor car as well as the engine. I can't imagine that the engine and trans wouldn't fit. But then this could lead to a driveshaft of a different length, or a different transmission crossmember. The list of necessary parts could go on and on. This is why I say having the entire donor car is so necessary.

Good luck,

Larry Bible
'84 Euro 240D, 516K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles
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