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#1
03-10-2015, 11:04 PM
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300D vs 300SD
I now have a 82 300D and am going to look at a 84 300SD. Was curious if anyone could tell me if I would be able to just drop the motor out of my 300D into the SD with little to no drastic changes. Just curious if there is much of a difference in the cars other than size. I love my 300D but have two kids and think I would like the extra space I would get with the SD. Any input would be great.
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1982 300D 
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#2
03-10-2015, 11:11 PM
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You might need to swap automatic transmission tailcones
as the speedo/odometer is electric oilfilter mount is different but is a problem going from an 300sd to a 300d probably not a problem going the other way. other than that same motor
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#4
03-11-2015, 07:06 AM
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I had a pair of 83s, 300D and 300SD concurrently.
If you like the W123 300D, You'll love the W126 300SD. I think the extra room is subjective. The width of both cars is very close, the rear is slightly better for legroom, and the trunk is larger for the W126. The OM603 SDL has a lot more room in back. There's just something about the way a W126 drives that's sooo much nicer than the W123. Jim
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14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles
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#5
03-11-2015, 07:30 AM
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Oil pressure sender is electric... Need to swap over the filter assemblies to fit right.
Water pump pulley is smaller, swap that also. Also the motor mount arms stay with the vehicle.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#6
03-11-2015, 10:17 AM
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Can you have 1 of each? I have SDs and would like a 123 - just because.
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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.
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#7
03-11-2015, 10:39 AM
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Quote:
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#8
03-11-2015, 09:37 PM
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Thanks for all the input. I would love to have one of each but my wife is not happy with the one sitting in the driveway let alone having two sitting out there. I am trying to find a house out in the country with a few acres and more garage space. Then I will have room for more. : )
Thought from what I have read its best to stay away from the SDL with the 6 cyl unless you have good mx records and have proof of (cam or crankshaft replacement) can't remember which it was. I love my 300D just have 2 little ones that are in the back and they are getting bigger and the leg room would be nice. I drive mine back and forth to work and running errands and average about 15,000 miles a year.
__________________
1982 300D
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#9
03-12-2015, 12:20 AM
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Quote:
Last edited by vstech; 03-12-2015 at 12:40 PM.
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#10
03-12-2015, 12:32 AM
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Quote:
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! Last edited by vstech; 03-12-2015 at 12:53 AM.
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#11
03-12-2015, 03:39 AM
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There's not enough of a size difference to go to all that trouble, IMO.
We had both at the same time in my family. If you want an SD, then buy one you like, and sell the D.
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