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-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   New Differential -- Wow (http://www.peachparts.com/shopforum/diesel-discussion/200417-new-differential-wow.html)

BioBens 09-21-2007 03:14 PM
New Differential -- Wow
 
I just installed a 2.88 diff in my 84TD that had a 3.07 original. A lot of work but, wow, what an overall quality improvement in shifting, rpm and noise at highway speed.:)

Brian Carlton 09-21-2007 08:22 PM
Yep..........:D

........now watch the fuel economy.........29 is not unrealistic for a highway number (for the SD).........the W123 might achieve 28.

winmutt 09-21-2007 09:30 PM
Quote:
Originally Posted by Brian Carlton (Post 1625950)
Yep..........:D

........now watch the fuel economy.........29 is not unrealistic for a highway number (for the SD).........the W123 might achieve 28.
Or in my case 16mpg :(... WHERE is my prec chamber lock ring tool, pelican parts swore it'd be here on wed...... Gah.

Brian Carlton 09-21-2007 11:03 PM
Quote:
Originally Posted by winmutt (Post 1625997)
Or in my case 16mpg :(... WHERE is my prec chamber lock ring tool, pelican parts swore it'd be here on wed...... Gah.
Yep, at 16, you've got some serious issues.........valves.........timing.........prechambers...........cam timing..........compression..........all/some of the above.:mad:

lietuviai 09-22-2007 12:17 AM
Quote:
Originally Posted by Brian Carlton (Post 1625950)
Yep..........:D

........now watch the fuel economy.........29 is not unrealistic for a highway number (for the SD).........the W123 might achieve 28.
Why would a 123 get 1 mpg less than a 126? Aerodynamics?

TheDon 09-22-2007 12:18 AM
yea, the W126 had better aerodynamics

pawoSD 09-22-2007 12:25 AM
I am still on the hunt for a 2.88 diff if anyone has one.... :D I need to be ready for when my cv boots give up the ghost, then the whole rear end is getting swapped out. :D

lietuviai 09-22-2007 12:29 AM
Is the the 2.88 found in 85's?

pawoSD 09-22-2007 12:33 AM
Quote:
Originally Posted by lietuviai (Post 1626115)
Is the the 2.88 found in 85's?
Yes.....do you have one? :D :D

lietuviai 09-22-2007 12:35 AM
I used to. Sold it since it was attached to the car.;)

pawoSD 09-22-2007 12:37 AM
Quote:
Originally Posted by lietuviai (Post 1626120)
I used to. Sold it since it was attached to the car.;)
Oh well, I tried. :idea3:

lietuviai 09-22-2007 12:41 AM
I didn't get anywhere near 28 mpgs with that axle in the 85. Rarely even got near 25.
I think I know of a 2.88 axle that might be available in Portland though.

pawoSD 09-22-2007 01:03 AM
Quote:
Originally Posted by lietuviai (Post 1626128)
I didn't get anywhere near 28 mpgs with that axle in the 85. Rarely even got near 25.
I think I know of a 2.88 axle that might be available in Portland though.
Really? How much? :D I'd possibly be interested....

lietuviai 09-22-2007 01:08 AM
This guy on CL might have one. His name is Rus, he's a Russian so don't believe any mileage claims.
http://portland.craigslist.org/mlt/pts/426474056.html

charmalu 09-22-2007 01:43 AM
Well for what it`s worth, our 85, I guess it has the 2.88. we get 27 to 29+ on the highway. came home from portland last may, fueled up in Lodi,CA @ Flyn-J and got 30.86. best I ever got, ever:P.

Charlie


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