I'll get pics up in a bit. I just had to brag.
I'm going to have a positraction equipped 300SD!

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Most 2.47s are. Early W116 ones are not.

I have to disagree. They are rare in 1st gen w126 mounting style.




.

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1983 123.133 California
- GreaseCar Veg System

Is not Is too Is not





Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I think I have one lying around from a Euro 500SEC.

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With best regards

Al

That one is probably a 224 gear ratio.

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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.

Based on my experience with my 83 300d na with 307 diff and five speed overdrive (about equal to 2.47 ratio) I would estimate the fuel economy would improve from 3 to 5 mpg but top speed will remain the same as with the lower gear.

My car will do 35 mpg at 70 mph and its top speed is 100 mph in fourth or fifth gear.

Tom

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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.

I want one! What did it come out of? I've been thinking I'd eventually like taller gears for the freeway anyway and getting posi as a bonus would just be sweet.

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'82 300SD - Somewhere over 220k - Becoming reliable...

Not much point to posi if you can't put enough torque to the ground to spin the wheels! 2.47 is very tall for only 180ft/lb torque. Even the cat choked 500 had 280ft/lb.

I'd be far more interested in a 3.07 or 3.46 with an air locker.

Yeah, I can see wanting a shorter gear for performance. It would be cool to have a 617 spin the tires. It would be one of the very few that did.

In reading all the final drive posts, the consensus is that a 2.88 is as tall as you can go to get better economy. the 2.47 only provides a quieter ride....apparently the fuel econ improvement to final drive relationship is asymptotic and ends at 2.88

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77' 300D, "Cartman" SOLD @ 150K (didn't know what I had)
83' 300SD, "The Superdon" 325k+ @ 28mpg
95 E320 wagon, "Millennium Falcon" 231k+ @ 24 Mpg
95 E300D, "Sherley" 308k @ 33.69 Mpg, currently anticipating a head
99 Suzuki Intruder "Trudy" @ 45 mpg

I'd like a locker option on my 3.07, then I could really have some fun in the snow! It holds its own with my mega snow tires (I've been experimenting lately, and it doesn't even come close to getting stuck)....but with locking diff....the possibilities!

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-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)

Snow...*pffft*... I need traction on dry pavement.
http://www.youtube.com/watch?v=njk1YhMcL_w

I live in northwest Oregon. I only see dry pavement 4 months a year and my wheels spin just fine on the rain soaked stuff I live with most of the time. Plus, the engine may get a little wilder in the future. I've done quite a bit of reading in those old threads about variable turbos and intercoolers.

2.88 would be even better, but can one separate the gears from the locker? I haven't had one of these diff's apart yet, but if it can be done, I'm not scared to try. Wouldn't be the first differential I've been inside... and yes, they do work afterward. I'm planning to tear into the suspension this spring which would make it an easy time to do a diff swap.

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'82 300SD - Somewhere over 220k - Becoming reliable...

Marvelicious, this thread has good info about taking the differentials apart.
http://www.peachparts.com/shopforum/showthread.php?t=242313

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Good read, and thanks for the link. I've just skimmed it, but it looks like he just swapped flanges and covers. I was talking about swapping say a 2.88 or 3.07 ring and pinion onto the posi carrier from the 2.47 and putting that back into the housing. Just as a cursory glance, it looks like it can be done though. I'm intrigued enough that I'll have to keep my eyes open for a posi diff.

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'82 300SD - Somewhere over 220k - Becoming reliable...