I have a 1985 300TD wagon. I spoke with a gentleman who has an 84 and said he put a newer model 5 speed diesel transmission (Automatic) into it and it bolted straight up - anyone have info on this? says he is getting 43mpg.

Thanks,

The MPG sound* quite high for an OM617 -- I believe the 5-speed standards don't get anything that high.

*This is actually correct -- think "The miles per gallon sound..."

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Highly doubt either is true. Would take a lot of modification .... 617 would never get 43 mpg

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1987 300D 180k
1985 300SD 330k Helga
1992 300D Lola 269k- Sold
1986 325 coupe Bessie >300k Original engine(ODO Broke) sold
2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it

The starter wart from the newer transmissions is on the wrong side for the 61x series. They do bolt to the 60x series

nothing about this statement is reality...

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I am getting 34 mpg (consistent over 13 tankfuls) with 10psi of boost @ cruise and the 3.07 axle.

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

soo... are you suggesting the poster is dyslexic?

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

No, I am skeptic about 43, but I do think it is possible.

When I keep my rpm's around 2300-2400, I can get 34 consistently. If I drive at 3000 rpm, my mileage drops to 27 mpg.

When I was flying, I found I could lower engine rpm, increase propeller pitch (increase load) and maintain my airspeed and burn less fuel.

Dropping rpm's can pay big dividends....

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

um, have you witnessed the modifications to Dok's vehicle? he has stated he keeps the RPM's below 2500 to achieve this... why must you dispute him Lance?

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

What is the standard axle ratio in a 1983 300TD?

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83 300TD, 260,000 miles, aka "Dusty"
6 vehicles, 2 cup holders (both in the dump truck)

3:07

__________________
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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I've seen a 123 wagon in Seattle with a 722.6 (five speed) hooked up to a 602. I do believe the owner claimed it was getting somewhere near 40mpg. He's a member here.

I don't think I've ever seen more than 28mpg with a 617 engine.

43 MPG ? Hmmm

I was told that about a car I got and that is just incredibly wishful thinking. I have a 5 speed manual, Getrag 717.400 and even by putting it in neutral as much as possible and coasting where possible, not happening. Also, I removed my PS pump and got rid of that parasitic drag. That got me around 2 MPG. Even when I remove the water pump and vacuum pump and go all electric, I am still trading off with more parasitc drain from the altenator, although the tradeoff is still about 50% in my favor. That will get me around 3-4 more MPG. Once it starts to get hot in S.C., the AC will eat some of that up. There is only so much that can be done to get rid of the parasitic drain on engine power. You can get rid of weight, but that gets tricky and it takes a while since you are only getting rid of 5 pounds here and 10 pounds there. Drop the bumpers and get Euro Bumpers. Get Recaro seats from a W124. Even get sexy and do a CF hood and trunk lid. Even a pound here and there and I highly doubt you would break 3,000 pounds. Even at 2,999 pounds, with a 5 speed manual, coasting, and never exceeding 60 MPH and no mechanical pumps, I doubt you would break 40 MPG. I forgot true Non-Turbo Nozzles with .15 vs .20 pintle and I am still thinking 40 MPG would be optimistic. HOWEVER, even after all of my mumbo jumbo, it may be possible. Maybe the 2.88 rear end ?

The key to really improved MPG on top of a well maintained car which is running 100%, is weight reduction and reduction of engine parastic drag and maybe some aerodynamics. That seems to be it. Moving 3,400 pounds of steel with a bunch of pumps will only get so much out of a gallon of diesel even when diesel has the most BTUs of any common fuel.

wedge that brick, and MAYBE you could see 35... air dam everywhere, and 40... load up with super retracting calipers, maybe even removing the rear calipers. install 4" wide tires, and moon wheels, skirts and a tail...remove the side mirrors, improve the transition from hood to windshield... tilt the windshield, smooth the rear window deck... I bet you could get the 3000 lb car into the 50's... with a 5 speed, and 2.47 diff... I sure a heck would not wanna drive the car...

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

OK ... turning it into the bat mobile is not a viable solution .... LOL