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#1
10-03-2006, 11:54 PM
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Standard Trans for 83 240 D
Does anyone out there have the transmission and parts to convert a 83 240D to a 4 or 5 speed standard? My automatic went down on me today and I would rather put the money into a standard conversion than have the automatic rebuilt. The problem with the auto is it will shift into second very hard after the engine comes up to almost redline, but won't shift any higher. I'm thinking a possible intermediate piston has either seized or shattered or it could also be a broken band. I really would rather go with a standard though. Thanks for anyone's help in locating the parts for me.
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83 W123 240D 76 300D, "Lil Yellow Car" 1978 Cessna 172N 180 HP Mod "If life ain't fun, I'm not interested"  The important things are those that you learn after you know it all. Chip Foose  Build a better mousetrap and you will REALLY infuriate corporate america. 
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#2
10-04-2006, 01:19 AM
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Check with Benz Friendz, I bought a manual tranny there last year, of course you need all of the associated parts but they can help.
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#3
10-04-2006, 01:21 AM
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You might try checking all of the vacuum lines and fittings from the transmission all the way up through the 3way valve and to the IP. If all looks good, check the vacuum to the transmission with a mityvac while opening and closing the throttle. It should go from high to low as you increase the throttle. If all is good, I know from experience that a transmission vacuum modulator failure can cause the transmission to delay its shift to redline or beyond. The modulator is adjustable to change the shift timing. Your tranny might have shelled out, but don't give up on it yet. Oh yea, did you check to see that there is enough fluid? Good luck.
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'82 240D Euro 68K and growing
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#4
10-04-2006, 01:30 AM
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What apache said!
Also you might have a bad Injection Pump vacuum valve. My daughters car (83 240D) would not go past 2nd. Replaced the unit and all is well http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1WU15D8LD1WV02WJF1&year=1983&make=MB&model=240-D-002&category=D&part=Inj.+Pump+Vacuum+Valve Dave
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1970 220D, owned 1980-1990 1980 240D, owned 1990-1992 1982 300TD, owned 1992-1993 1986 300SDL, owned 1993-2004 1999 E300, owned 1999-2003 1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD 1988 560SL, 100,000mi, owned since 1995 1965 Mustang Fastback Mileage Unknown(My sons) 1983 240D, 176,000mi (My daughers) owned since 2004 2007 Honda Accord EX-L I4 auto, the new daily driver 1985 300D 264,000mi Son's new daily driver.(sold) 2008 Hyundai Tiberon. Daughters new car Last edited by dmorrison; 10-04-2006 at 02:26 AM.
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#5
10-08-2006, 02:28 PM
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Well I got it repaired. It was a broken vacuum line. Now it runs great and shifts nicely. That's great.....I think. Now I can't get the wife to agree to a 5-speed conversion. Well maybe later.
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83 W123 240D 76 300D, "Lil Yellow Car" 1978 Cessna 172N 180 HP Mod "If life ain't fun, I'm not interested" The important things are those that you learn after you know it all. Chip Foose Build a better mousetrap and you will REALLY infuriate corporate america.
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#6
10-08-2006, 03:20 PM
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A 5-speed conversion will probably cost double or more than a 4-speed. The 5'er is so insanely rare in the USA and costs so much to ship across the pond, it's not very cost effective just to get a few hundred RPM lower highway speeds.
I've only seen one 5-speed in person and it was in a pristine 280CE that I wouldn't have the heart to take apart.
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#7
10-08-2006, 03:47 PM
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I have a complete 4 spd set up from a 240d including clutch, flywheel, pedals, master and slave cylinders that I might consider selling if anyone is interested in it. I thought I might want a manual so I removed it from a junkyard car, but I've decided I prefer the automatic.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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