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Classic Cars Mercedes 300D Suggestions
2231 messages, Last post on Nov 11, 2009 at 9:21 AM
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my 87 300D has 504,000 km and i have rebuilt most of it with the exception of the diesel engine which is great (oilchng every4000k). I have a leak in the rad that requires adding coolant a little too often so I am lookin for advise as what to do. I believe this rad has about 200,000km or more on it. I have replaced all the hoses previously. I do have a small oil leak in the front bearing also. Question is - should i try to "treat" the rad with something to block the leak? any suggestions? OR do I need to replace it ...and if replace what's involved? Do i need any other parts than a new rad? How tough is it to replace the front oil seal on the crankshaft? ...any suggestions would be appreciated. thks
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Replying to: keithmcd (May 20, 2009 6:17 pm) I don't think replacing the seal is all that big a deal (get yourself a workshop manual) but if the wear ring has 2 grooves in it from the seal, then you need to replace the wear ring as well. If there's only one groove, you can buy a special offset seal to cope with that. If there are no grooves, only a polished wear ring, then use the standard seal. There's no screwing around with a radiator. You need to buy a new one or have that one professionally repaired (if it can be). If you lose coolant one day on the highway, your engine is cooked and your car is a total. |
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I have a '85 300D Turbo, (model 123133) which runs great. The windows door locks and climate control, all have there problems, plus the paint work is shot. I have the opportunity to pickup a late '70's 240D less engine and trans, which seems to be in much better shape. the question is, does anyone have experience installing a 5 cyl. turbo into a 240D, (model 123123) body?? I have done engine swaps in American cars but am now retired and would prefer an easy swap.
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Replying to: seh43 (May 26, 2009 10:52 am) Length 33.5" back of valve cover to front of fan, Depth 27" top of valve cover to bottom of oil pan, Width 14.5" widest part of oil pan. Also the 617 oil pan has a front sump so that's something to worry about. I think for sure you'll be re-wiring the glow plug harness and of course you'll have a different exhaust manifold and routing so no doubt some exhaust welding/bending to do. |
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Weren't the body dimensions of the '76-'85 (the W123) 240D and 300D identical?
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Replying to: hpmctorque (May 26, 2009 11:08 pm) One thing to think about it checking the differential ratios of the two cars. As the Ben diesels progressed through the years, the engines ended up spinning faster at 60 mph---probably due to changes in the differential to give the cars the power they desperately needed. So my point is that if the differential ratios are radically different, you might end up with a very unpleasant car---if the engine is turning say 4000 rpm at 60 mph. |
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a) my 300D 1987 has some slack somewhere in the drive train as it often "clunks" when shifting up AND sometimes just changing from reverse to drive. If I am gentle with it the "clunk" is not severe and just seems to be taking up a little slack. What to think? Is there a problem brewing? OR is this "nothing to worry about"? b) the wires had broken off the thermostat so that the electric auxilliary fan did not work when needed to prevent overheating while idling with AC on in hot conditions. I have had the wires soldered back onto the terminals on the thermostat. I can make the fan run by just bridging across the two wires at the terminals. BUT how can I TEST to know that the thermostat will now activate the electic fan when needed to prevent overheating?
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Replying to: keithmcd (May 29, 2009 6:40 am) Best way to test the aux fan is to just let the car idle with the AC on and see what happens. If the aux fan doesn't kick in as the temp needle approaches hot, then it's not working.
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Replying to: keithmcd (May 29, 2009 6:40 am) |
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I'm looking to buy a 1980 300CD with 140,000 mile on it. The cars in great shape. What should I look for in terms of past or future problem areas. What does W123 mean. It's a non turbo. Thanks BawlmerC 
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