5 speed manual om617

5spd617

01-22-2014, 05:39 PM #32

(11-01-2013, 11:24 AM)Jooseppi Luna
(08-27-2013, 03:28 PM)5spd617 it is really nice to have the overdrive with the 2.88 rear end. haha. 80 mph at ~2500 rpm
really good mileage on the freeway about 30 mpg.
after getting a good flex joint and good bolts i haven't had any issues.

What speed do you get 30 MPG at? 80 MPH? 30 MPG @ 80 MPH in a luxury barge would be awesome and makes me wonder what kind of mileage I could achieve at lower speeds... 35 MPG? That would be awesome. I remember that Doktor Bert on PeachParts said that he could hit 35-37 MPG doing 60 MPH in his W116 'SD with automatic after he swapped in a 2.47:1 differential.

A few questions on the swap:

1) Is the 5-speed shorter than the auto or is it the other way around? What is the difference in length? Did you end up needing to modify the driveshaft?
2) What did you use for a shifter? The W201 shifter?
3) What did you do about the shifter linkages?
4) Did you ever end up covering the starter hole with anything?

sorry i have been busy working and such

car is running good still i tow trailers with it a lot... with a 14 foot flat bed trailer about 1200lbs unloaded, i very rarely use 5th (over-drive).

1) the 5 speed is shorter. i used part of the w201 drive shaft because it was longer. i dont recall the difference in length 3-4 inch.
2)yes the 201 shifter fits the hole in the floor but the bolts dont line up i used some self taping screws, planning on a better option but its working great.
3) get it mounted trans and shifter and lengthen the rods about 3in.
4) the old starter hole is covered with the 3/16th plate the cutout in the bell housing for new starter is open.

alright a little update here.
as far as fuel economy goes city is 17-21. i am a led foot.
freeway from Colorado to northern California average speed of 77 mph with average mpg of 33.

I have adjusted the pump witch helped a lot with low-end power

as far as the gear ratios go i am pretty happy 1st is a little tall for starting on a hill it works tho just got to stoke the fire.
drivabillity) 5th is almost useless under 65 mph.
with 2.88 rear-end

300sd Mercedes egr delete, cat delete, rebuilt om617, manual 5 speed 717.411, experimenting with w/m injection, runs on wvo sometimes with no modification, injection pump turned up, air shocks in rear to correct sag.

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