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  #1  
Old 02-10-2008, 06:46 PM
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Join Date: Feb 2002
Location: Big Island- Hawaii
Posts: 106
1985 300d Engine vs Transmission Swap

My (new to me) 85 300d has a bad transmission...at first I thought maybe just vacuum which I fixed. The problem is:

I have 1, 2, and sometime 3rd gears but nothing higher. The transmission fluid is burnt looking/smelling and is all glittery with metal not unlike my nephews special red glitter paint! So I am going to assume that the transmission is no good...

My question:

I have a parts car with good transmission and engine. The engine on my running car with the bad trans. is fine too. Let's say they are equal. Would it be easier to pull the engines with trans attached and put the parts engine/trans in or swap the bad trans out without pulling the engines?

Thanks,
Will
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Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k
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  #2  
Old 02-10-2008, 08:58 PM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Pull the engine and trans as one unit, it`s a lot easier. then this is a good time to replace leaky gaskets, oil cooler lines etc... I just went through this procedure this summer.
Drain your fluids first, and remove the torque converter bolts.

The engine will have to come out at a rather steep angle, I use a engine tilter with the crank on the end. cut off the crank and weld on a large nut. then use a wratchet, it give you more leverage. or I guess you could use an impack wrench.

Charlie
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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
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  #3  
Old 02-10-2008, 09:27 PM
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Join Date: Dec 2005
Location: Carson City, NV
Posts: 3,771
While that transmission is probably toast, I wouldn't condemn it just yet. Change the fluid and filter and see if that clears things up first.
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Anyone who thinks a 300D is fast drives too slow.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 357,xxx miles
08 Triumph Street Triple 24,xxx miles, lowered 10mm in front, Pirelli Angel GT tires, EBC HH brake pads, otherwise stock.
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  #4  
Old 02-11-2008, 12:36 PM
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Join Date: Feb 2002
Location: Big Island- Hawaii
Posts: 106
Update

So, thanks for the advice. I will try flushing the fluid myself and changing the filter...first.

Apparently the man I am buying the parts car from has already taken out the transmission so my question is moot. Although, should I swap the tranny with the engine in place or pull the engine, swap tranny and put it back?
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Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k
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  #5  
Old 02-11-2008, 12:41 PM
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Join Date: Jan 2002
Posts: 18,355
On an MB, I've only pulled a manual trans at a Pick and Pull and I haven't put one back in. But on the basis of my experience with that, I would not bother pulling the engine. I'd get the car up pretty high, use a transmission jack, and switch out the trannies.
One caveat: I did this on a 240d with the 4 cylinder. I don't know how accessible the bell housing bolts are from below in the 5 cylinder but I can't imagine they are any more difficult than the starter bolt so dropping the rear transmission mount and using long extensions should make it relatively easy to get them out.
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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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