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Mercedes 300D Suggestions

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Comments

  • dotishdotish Posts: 20
    Well, I got my used CCU in the mail and was all set to install it when I discovered that the old one doesn't want to be removed by unbolting it and pulling it out of the console. It won't fit. It appears that the console will have to be removed to extract the CCU. Does anyone have a suggestion as to how to perform this operation, or knowlege of a site where I can read or download info? Thanks for any help I can get.
  • jamesleijameslei Posts: 12
    Thank you again Mr. Shiftright. I will concentrate on the vacuum pump (if I can actually find the thing!) re my soft brakes.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    You can buy rebuild kits for these pumps.

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  • brillanzebrillanze Posts: 20
    This may not be helpful, since you have a mechanic going over it, but, years ago, I spent a lot ( whole lot) of time and money replacing every part, commection, line, etc. in a brake system, then realized that I had neglected to measure the thickness of the rotors. I replaced the rotors and all was fine. I had just wasted several hundred dollars and significantly raised my blood pressure!
    Good Luck ;)
  • brakeengrbrakeengr Posts: 98
    I assume you first removed the woodgrain facia plate- it is just glued on. Once you remove that, there is black plastic plate, and you remove the 4 screws- the CCU comes out easily.
  • brakeengrbrakeengr Posts: 98
    1) Vacuum leak: If there are vacuum leaks in the doors, you should disconnect the "door system". There are 2 lines going from a vacuum valve just before the firewall- these 2 lines go into the firewall and then into the doors. I have pulled out both (mine is 82 300D) of them at the valve, and just put a vacuum hose connecting the 2 outlets in the valve- so it becomes a "U", and the valve outlets are closed up. I believe the 2 lines are yellow that go into the firewall.
    2) Good suggestion on the rotor thickness that someone pointed out- definitely makes a huge difference if rotor is thin.
    3) Pads- if pads are almost used up, or are "cheap organic type", or have a hard glazed surface- they may not have enough friction in them. You may want to replace with a good set.
    GL.
  • jamesleijameslei Posts: 12
    Hello? What the heck is a CCU? Was that message meant for me? (I am wrestling with vacuum leaks and soggy brakes...) Still don't recognize the vacuum pump on my 1982 300TD.
    Coincidentally, I removed that plate you mention because it is badly curved. But nothing seems to flatten it.
    James.
  • dotishdotish Posts: 20
    Yes, I've removed the facia plate and the plastic plate. If you're thinking of the CCU with the buttons arranged horizontally, I can understand what you're saying, but I have the model previous to that with vertical buttons. That one has a plastic base that is much wider than the opening in the console. Maybe my unit was the reason for the creation of the newer models. I can't see any way to get it out without removing the console. From the fact that the base of the unit in there at the moment is broken off its mounting screws on one side, I think someone has already tried to pry it out somehow. Thanks for replying.
  • dotishdotish Posts: 20
    Actually, the message was intended for brakeengr. Good luck with the mushy brakes and vacuum leaks. The CCU is the Climate Control Unit. It's the gizmo in your console with the buttons and the thermostat wheel that you use for heating and A/C.
  • britcanbritcan Posts: 4
    the button to dim my instrument panel is missing on my 79 300d where do i get a replacement???? please reply or call me at 210-396-1643 thanks. Maurice
  • britcanbritcan Posts: 4
    i have a 300d 79 with a toyota supra engine transmision in it . it is great . the guy who installed the unit said it was easy cost for the unit was $600. something to think about
  • hpmctorquehpmctorque Posts: 4,600
    First time I've heard about a Benz with a Toyota engine, but, then, that's the equivalent of installing a Chevy small block in a Jag.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    That's pretty weird. I guess a man's gotta do what a man's gotta do, but given that the original Benz transmissions and engines were nearly bulletproof and capable of eternal life, one wonders why someone would do a conversion like that. Lotta work, as you also have to install a different gas tank, fuel lines and of course the Supra engine management system, wiring, computers, etc.

    He might have just gone out and bought a 300E gas car and been very happy for very cheap.

    I know someone who installed a 300D engine and transmission into a 1953 International Harvester pickup truck, so anything's possible.

    I always thought installing a Chevy engine into a Jaguar XJ6 was the height of irony, since the Jaguar engine is about the only thing on an XJ6 that was any good.

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  • fintailfintail Posts: 46,815
    I'd imagine a M103/104 out of a W124 would be just as powerful and probably as reliable as the old Toyota I6.

    I can see why the XJS V12 would be ditched though...with its propensity for 0 oil pressure and fires.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    those are not "fires"--those are the XJ12's "auxiliary heating systems" in action. :P

    As for a 300D, I'd certainly consider swapping a turbo diesel engine into one....THAT makes sense, since the 300D is, by modern standards, a road hazard because it's so slow. 0-60 in 20 seconds in no fun whatsoever on a California freeway.

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  • fintailfintail Posts: 46,815
    British technology...very good heaters, but only good for one use. :shades:

    If someone had lots of money, time, and little desire to be reasonable, maybe they could put a modern bluetec engine in a W123 or W126 - excellent performance, amazing mileage. Either that or just forget about mileage and put a big AMG V8 in one...A W123 has to be relatively light. That would be a sleeper.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    3500 lbs. Not exactly a ballerina :P

    But a 560SEL is a real porker at 3870.

    if you could find one of the very early 220Ds, like a W 115 from the early 70s, that only weights 2950 lbs or so.

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  • fintailfintail Posts: 46,815
    Wow, I had to look that up..I didn't know a 300D Turbo weighed so much. I can see that weight in a 560SEL - see what a S550 weighs today. An E-class can weigh more than a LWB W126 today. My W210 weighs around 3700 I think. The fintail also weighs just under 3000 IIRC...lots of open space and not a lot of junk to weigh it down. I suspect the torque from a big tuned V8 would destroy the structure of the car, though.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    I dunno...I had a 560SEL for a few weeks (donation car that I was babysitting) and I wasn't particularly impressed with the power. It's only 185 HP SAE or something like that.

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  • fintailfintail Posts: 46,815
    I always thought the M117 put out around 240hp...not worth much in 2009, but maybe not so bad for 1985. My 300SE had the same engine as a 300E (M103) and I think that was a 180hp unit.

    Now the 380 series cars were very malaise-y, and I could believe they didn't break 200hp, and they were also not the most economical. But still better than the old 450 cars no doubt.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    Book says 180HP at any rate. It certainly didn't feel like 240HP---maybe in the last iteration?

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  • fintailfintail Posts: 46,815
    The M117 dates back to the early 70s and was used in the emissions choked 450 and 4.5 cars of the deep malaise era - no doubt then it put out 180 or even less then. But I think the updated/enlarged/bored out etc version from 1985- put out the peak power.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    yes from 1988-1991 only the HP went up. Then came the M119 which is considerably more powerful.

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  • fintailfintail Posts: 46,815
    Those are the best years for 126s - as in 1989 they received an interior update too.

    MB got a lot of mileage out of that engine platform, a 20 year production run. Almost like something GM would do, but for different reasons of course.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    never liked those cars (can't you tell?)

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  • fintailfintail Posts: 46,815
    Yeah, too big and un-sporty for you.

    I just think they look perfect, and they are so well built and comfortable. I have liked them since I was a little kid.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    A little over the top for me. I prefer a certain modesty in a car. They strike me as overdone, gaudy, somewhat tasteless in proportion. They reflect an age of excess IMO.

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  • fintailfintail Posts: 46,815
    The 126, overdone? Gaudy? Surely you jest! :P

    Blunt smooth timeless lines, little chrome, awesome period aerodynamics, much more efficient than what they replaced...there was nothing better being made in that class at the time.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 63,442
    Feh. They appear overblown to me. Too big, very awkward old-fashioned styling. A German Buick. It's no wonder Lexus knocked them into the ropes and almost knocked them out. Way overpriced for what they were.

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  • fintailfintail Posts: 46,815
    I look at them relative to when they were new. Superior to anything of the period. Those were some dark ages, and the 126 was a truly modern car. Was there anything more advanced for model year 1980? By 1991 it was getting old, but there was some progress in that 11 years.

    C&D, July 1987, says a 560SEL was good for 0-60 in 7 flat, faster than an IROC Camaro of the time, and got the old beast up to 140mph. It was good for something.

    The LS was a success because it was a line by line update (or copy, if you will) of the 126, and it must have been sold at a loss initially, as the price jacked up pretty quickly after 1990.

    Today there are online clubs and organizations for 126 fans and owners...how about early Lexus?
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