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#1
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What is the differance between 603s ?
Hi what is the differance between 1987 300sd and 1993 300sd than there is the S350 3 differnt motors or what ?I get 3 differnt storys. thanks J
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#2
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Yes, three different engines.
1986-1987 3.0L OM603.96x, known for it's risk of cracking the head. 1990-1995 3.5L OM603.97x, known for randomly bending connecting rods and extreme oil consumption afterwards. 1990-1995 3.5L OM603.97x, rebuilt/replacement by Mercedes, far less likely to have rod issues. Last edited by Brian Carlton; 03-09-2008 at 10:05 PM. |
#3
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I know, I love the 617 also ! but what cars had the better 603's ?
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#4
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IMHO, anything with the 3.0 liter version, or anything before 1990, IIRC. I personally would not trust even the factory rebuilt 3.5 version.
Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#5
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IMHO any 603 with a #22 head. Others will disagree, but there are plenty of cracked ones out there. Having said that, it is still cheaper to do the top end than to replace the whole engine. So the best ones would be found in the 1987 300D/TD and the 1986-87 SDL. Those are the only years for US imports. The OM603 was used in the rest of the world until 1989, AFAIK.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
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