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W123 4spd swap driveshaft question
Dinman Offline
Naturally-aspirated
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Posts: 4
Joined: Dec 2018
Location: Louisiana
#1
W123 4spd swap driveshaft question
As title states:

As countless people have done/talked about doing, i'm putting an aluminum 4spd (83 240d) into my 1983 300D (us spec)

Bought the entire car for the swap. Wrecked in the front.

Here's my question- regarding the driveshaft.

From my understanding, ~19.5" is the length you want out of the front shaft in order to swap the 4spd into an om617 equipped w123. & a 240d 4spd shaft is 24". So lop ~4" off and balance?

Or- i found this shaft pictured. Coming from trans back, colors are Green/Green/Red/Green. 

Seller claims "Mounting flange to end of coupling nut is 21"

It came from a 1982ish 300CD coupe, that had an iron box 4spd swap.

Shouldn't this shaft bolt right into my w123 300D sedan with the aluminum 4spd swapped in?

Thanks!




[Image: 48476517626_facce66d36_b.jpg]PHOTO_20190806_152448 by Daniel Inman, on Flickr
(This post was last modified: 08-06-2019, 07:44 PM by Dinman.)
08-06-2019, 07:36 PM
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NZScott Offline
HX30W 73/44mm
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Posts: 376
Joined: Jul 2014
Location: New Zealand
#2
RE: W123 4spd swap driveshaft question
Remember coupes have a shorter body...I'd think they'd make the front shaft shorter rather than have a different rear one. Don't know if the 4 speed Getrag boxes are the same length as the iron ones. I can't tell you much else sorry...

1978 300D, 373,000km
OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (awaiting certification to be legal...)

1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km 'new' DD





08-08-2019, 01:31 AM
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Dinman Offline
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Posts: 4
Joined: Dec 2018
Location: Louisiana
#3
RE: W123 4spd swap driveshaft question
(08-08-2019, 01:31 AM)NZScott Wrote: Remember coupes have a shorter body...I'd think they'd make the front shaft shorter rather than have a different rear one. Don't know if the 4 speed Getrag boxes are the same length as the iron ones. I can't tell you much else sorry...

No worries, thanks for the reply. If anyone knows, im all ears. Trying to piece together everything for the swap
'83 240D 4spd
'83 240D slushbox
'83 300D + mud tires
'83 300SD
'89 300SEL
'00 Crown Victoria CNG
'10 E63 
08-19-2019, 07:07 PM
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