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  #1  
Old 03-07-2008, 05:36 PM
'da 'browski-'owski
 
Join Date: Feb 2008
Location: Mesa Arizona
Posts: 125
617 turbo

how well will a 617 turbo from an '81 126 fit into a '80 123?

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  #2  
Old 03-07-2008, 05:45 PM
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It should fit just fine. There may be some ribs cast into the upper oil pan on the turbo engine that need to be ground down to clear the cross member, other than that it should bolt in.
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  #3  
Old 03-07-2008, 06:35 PM
t walgamuth's Avatar
dieselarchitect
 
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Location: Lafayette Indiana
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are you meaning the 617 turbo motor or jsut the turbo? the 80 123 should be a non turbo from the factory.

Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #4  
Old 03-07-2008, 08:34 PM
ForcedInduction
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Quote:
Originally Posted by hoborobot69 View Post
how well will a 617 turbo from an '81 126 fit into a '80 123?
It will fit but there will be no benefit to it. You won't gain any power and the enigne's life will be reduced.
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  #5  
Old 03-08-2008, 01:43 AM
bgkast's Avatar
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Quote:
Originally Posted by bgkast View Post
It should fit just fine. There may be some ribs cast into the upper oil pan on the turbo engine that need to be ground down to clear the cross member, other than that it should bolt in.
I was talking about the whole engine in this post, not just the turbo.
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1982 300SD - 232K miles - Wife's Daily Driver

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  #6  
Old 03-08-2008, 01:46 AM
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Quote:
Originally Posted by ForcedInduction View Post
It will fit but there will be no benefit to it. You won't gain any power and the enigne's life will be reduced.
Unless the '80 is a 240.
Or maybe that engine has been trashed.
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Last edited by toomany MBZ; 03-08-2008 at 01:47 AM. Reason: more info
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  #7  
Old 03-08-2008, 04:02 AM
ForcedInduction
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Originally Posted by toomany MBZ View Post
Unless the '80 is a 240.
Or maybe that engine has been trashed.
He has an 80 300TD with a 79 engine, both 617.91x engines.
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  #8  
Old 03-08-2008, 11:44 AM
'da 'browski-'owski
 
Join Date: Feb 2008
Location: Mesa Arizona
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forced induc, It will fit but there will be no benefit to it. You won't gain any power and the enigne's life will be reduced.

i was speaking of swaping out the whole engine, which is n/a so i think i would gain some power putting a turbo diesel under the hood.... right?
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  #9  
Old 03-08-2008, 11:48 AM
TheDon's Avatar
Ghost of Diesels Past
 
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yes
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  #10  
Old 03-08-2008, 12:30 PM
Banned
 
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Location: Blue Point, NY
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Quote:
Originally Posted by hoborobot69 View Post
forced induc, It will fit but there will be no benefit to it. You won't gain any power and the enigne's life will be reduced.

i was speaking of swaping out the whole engine, which is n/a so i think i would gain some power putting a turbo diesel under the hood.... right?
Forced is confused. I believe he thought you were simply adding a turbo.

A complete swap of a 617 turbo into a vehicle that had a 617 n/a engine is a perfect solution for additional horsepower. The life of the engine is unaffected.
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  #11  
Old 03-08-2008, 12:35 PM
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Quote:
Originally Posted by Brian Carlton View Post
Forced is confused. I believe he thought you were simply adding a turbo.

A complete swap of a 617 turbo into a vehicle that had a 617 n/a engine is a perfect solution for additional horsepower. The life of the engine is unaffected.
because the turbo ngine is beefed up for it.
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1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

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  #12  
Old 03-08-2008, 12:37 PM
'da 'browski-'owski
 
Join Date: Feb 2008
Location: Mesa Arizona
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thankya fellas!
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  #13  
Old 03-08-2008, 12:55 PM
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Make sure that you swap the whole drivetrain - engine and transmission.
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1992 W201 2.3 - sold
1985 W126 380se - sold
1985 W123 OM617.952 - sold
1981 W123 OM617.912 - sold
1986 W201 2.3 - sold
1979 W123 OM 617.912 - sold
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  #14  
Old 03-08-2008, 12:58 PM
'da 'browski-'owski
 
Join Date: Feb 2008
Location: Mesa Arizona
Posts: 125
duly noted
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  #15  
Old 03-08-2008, 01:09 PM
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You will still have a differential with a ratio designed for an NA engine.

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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
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