Is any enine difference in 300sd turbo 81-85 and 82-85 300d turbo.

at least one difference is the last digit of the engine model number

The main difference I know of is the oil pressure sender. One is mechanical (Pressure tube) the other is electrical. Another is a different main vacuum orifice going to the brake booster.

Other than that, they are identical. And you can swap the gauge/orifice.

Thanks for jours info on engine defference. Ivan.

Wagon motors are different with a pump for hydraulic suspension.

I know this is a really, really old post but I thought I would update it with another difference... The water temp sensor is different between the 2 engines.

__________________
1984 300D 398K-daily driver
1998 Honda Accord 102K -wife's daily driver
1991 Volvo 740 289K
2000 Toyota Corolla 143K

In what way is it different? Different diameter - different position? My non turbo OM617's water temp sensor is in the head between cylinders #2 and #3. Do the turbo's have them positioned elsewhere?

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Both engines are a OM617.95X, it`s just the various components bolted on that can be swapped between the W123/W126 engine bay it is being dropped into.

The 84 and 85 have the Rack position sensor in the back side of the IP, but it can be left disconnected if installed into an 83 or older body. Or swap in the older IP.

I do know the 85 hole in the end of the crank for the Torque Convertor is a different size. so if you are going to install a manual transmission, the stock pilot bearing won`t fit. TOMJ had this problem back in 03. see if I can find the thread.

Found It:
http://www.peachparts.com/shopforum/showthread.php?t=76297


Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Wow - interesting - (sorry to be so sad) but that must mean that there are two different sets of part numbers for OM617 cranks. Meaning: OM617 cranks before 85 will share a set of numbers that all point to one crank type - but the 85 crank will have a different number because it is slightly different and in the eyes of Mercedes not backwards compatible.

Moving one step on - this might mean that 85 cranks are still available whilst pre-85 cranks are unobtainium... now would that be a nice bit of information for someone who has a spun balancer problem?

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Well I got my standard pilot bearing into the 85 617 that I have. It didn't want to go as it measured .030 larger. So I called my buddy Willie in Phoenix (Formerly B&W Auto, Tolleson) and he said "freeze it" Jim and it will work fine. So I put it in the freezer overnight, in the morning I stuck it in the hole, about half way and I couldn't get it out. So I grabbed a HD deep socket, gave it a few taps and it went in all the way. Transmission shaft fits it perfectly.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

Well, good to know.

Would Johnsons Freeze 12 work?

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works