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  #1  
Old 08-28-2009, 11:33 PM
Actros617's Avatar
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1985 Torque Converter

What's the diffrence between the 1985 Torque converter and the Pre 1985 Torque converter is it bigger? and where can i buy one???

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  #2  
Old 08-28-2009, 11:55 PM
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No physicall difference. The difference is internal, the pre-'85's have a 1600rpm stall speed, while the '85 has a 2600rpm stall speed....its awesome. I just swapped an '85 trans and torque converter onto my car a month ago and it is a huge improvement. It allows you to get all of the torque from the 617 even at low speeds (and take-off)...so it pulls like crazy!
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  #3  
Old 08-29-2009, 12:54 AM
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can you swap TC with out changing the Transmission
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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi
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  #4  
Old 08-29-2009, 02:04 AM
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Quote:
Originally Posted by Actros617 View Post
....and where can i buy one???
You can get one from donor '85 with a 722.3xx trans or have your torque converter rebuilt with your specified stall speed at a reputable trans shop.

Quote:
Originally Posted by Actros617 View Post
can you swap TC with out changing the Transmission
Yes.
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  #5  
Old 08-29-2009, 02:28 AM
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So the higher the stall speed the better or is there sweet spot range for the stall speed...
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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi
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  #6  
Old 08-29-2009, 03:38 AM
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Quote:
Originally Posted by Actros617 View Post
... is there sweet spot range for the stall speed...
The sweet spot range is between 2300-2700 rpms.
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  #7  
Old 08-29-2009, 08:36 AM
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Yep, the 617 makes much better power from 2200-2700rpm than it does at 1600, so it pulls a lot better with the later torque converter. It gives a weird sensation until you are used to it (like a slipping trans), but its normal.

It is possible to swap just the torque converter, but the trans would have to be removed to do the swap.
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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  #8  
Old 08-29-2009, 08:58 AM
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Maybe I should stop beating the dead horse? You already know who has several pre 85 and an 85 617 with transmission just sitting around....
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Last edited by daw_two; 08-29-2009 at 11:32 AM.
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  #9  
Old 08-29-2009, 10:25 AM
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Quote:
Originally Posted by DeliveryValve View Post
You can get one from donor '85 with a 722.3xx trans or have your torque converter rebuilt with your specified stall speed at a reputable trans shop.
my 85 has a 722.416.
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  #10  
Old 08-29-2009, 10:29 AM
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Quote:
Originally Posted by ::matthew View Post
my 85 has a 722.416.
The '85 Cali version came with the 722.416 and uses the same stall speed as the '85 Federal 722.303/315. But the torque converter is physically different in the spline setup. So they will not interchange.
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  #11  
Old 08-29-2009, 05:04 PM
Actros617's Avatar
Ich fahre dieseltypen
 
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Location: Oklahoma
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So it laggs at low end and really picks up @ 2600 RPM, just like the 300SDL? Right?

__________________
Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi
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