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  #1  
Old 12-04-2015, 10:09 AM
t walgamuth's Avatar
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Quote:
Originally Posted by swampmonkey View Post
on normal diesel ive done 38mpg, on the older "real" diesel 41mpg.
that is at about 60mph and long drives.

mixed aggresive driving they do about 33mpg

yes, al om617a (turbo) from 1985 had the 2.88 (in US), not in sweden thou/europe, so information might differ depending on what website you visit.
we never had the turbo in the coupe nor sedan w123 either, nor the w116 or w126 with dieselturbo

ps. Sweden diesel. might have more energy than the US, and the old "real diesel" is better than the one bought at pumps.
Imperial gallons?
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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.
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  #2  
Old 12-05-2015, 08:45 AM
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Quote:
Originally Posted by t walgamuth View Post
Imperial gallons?
yeah, supposed to. (if imperial is US-gallons)
https://www.google.se/search?sourceid=chrome-psyapi2&ion=1&espv=2&ie=UTF-8&q=0.57l%2F10km%20to%20mpg&oq=0.57l%2F10km%20to%20mpg&aqs=chrome.0.69i59j69i64j69i58.3812j0j1

when doing the math manual i came out with the same answer.

or 0.57l/10km if that feels better. but that was on oldstyle-diesel and the 2.88 and more healthy engine (real diesel that was for the cars 25years ago over here) one can still get ahold of it...

on normal diesel and the other 3.07 i did 0.63l/10km with the 2.65, and a tad lower speed reached the same consumption with the 3.07differential.

the 2.65LSD i had to pair with low-profile 14" to be able to get going properly, while i do highprofile 15" with the 3.07. the rpm/speed came out about the same, but the drag was significantly less with low-profile tires, as far as i imagined atleast.

those drive was utterly economical thou.
mixed driving i get about 0.69-0.7 out of the 3.07 on normal diesel. witch is about 33-34mpg.


ive heard some rumors/knowledge that they geared the cars so that it could incline, say a 10degree hill, at 60mph at fourth gear without loosing speed. or something like that.
the diesels seem to have been used a lot in city trafic aswell, and the european roads was to some degree utter crap compared to today. (besides autobahn etcetc)

the fact that they 1981 swapped from 3.27 to 2.47 in the 380SE
and 2.82 to 2.24 in the 500SE ought to be some hint that Mercedes reevaluated their thought on gearing, + the fact that cars ought to get better mileage etcetc.
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Last edited by swampmonkey; 12-05-2015 at 09:00 AM.
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  #3  
Old 12-04-2015, 08:45 AM
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"I think on the whole the W123 was built for a different time where road speeds were slower.

If in the US of A the old fashioned 55mph maximum was forcibly regulated the gearing wouldn't seem too slow!"

This is very true. The freeway I drive to Salem(Hwy 22) is posted 55 mph due to a history of bad accidents. Most traffic still cruises @ 60-65 mph but there are enough trucks and the occasional slow driving sedan for the 240D to be right at home with periodic opportunities to pass. Don
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  #4  
Old 12-05-2015, 09:07 AM
t walgamuth's Avatar
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Imperial gallons are bigger than us gallons, hence offer higher miles per gallon results.

UK gal =

US gal lqd * 0.83267

So take .83267 x 40 mpg = 33.3 mpg.

That sounds more like it.
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..I also have a 427 Cobra replica with an aluminum chassis.
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  #5  
Old 12-05-2015, 05:04 PM
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Quote:
Originally Posted by t walgamuth View Post
Imperial gallons are bigger than us gallons, hence offer higher miles per gallon results.

UK gal =

US gal lqd * 0.83267

So take .83267 x 40 mpg = 33.3 mpg.

That sounds more like it.
Bingo.
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  #6  
Old 12-05-2015, 10:21 PM
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Quote:
Originally Posted by t walgamuth View Post
Imperial gallons are bigger than us gallons, hence offer higher miles per gallon results.

UK gal =

US gal lqd * 0.83267

So take .83267 x 40 mpg = 33.3 mpg.

That sounds more like it.
nope. im talking US mpg, not UK mpg. sorry about the missunderstanding. its not Imperial mpg. but US mpg.

its 33mpg mixed US gallon.
and ive peaked at 41US mpg with real diesel,
and on normal diesel its 38mpg, as best.

or if you prefer imperial gallons, ive peaked at 49mpg.

still, our diesel is a tad better than yours stock, and the 41mpg was with the diesel better than our normal.
and thats not "normal" driving, the 31mpg, thats in the middle of a cold night, and a huge % is only highwaycruising at 55mph

0.57l/10km if you want to do the math by yourself.
or check here.
http://www.markporthouse.net/rangie/fuelconsumptionconversion.htm
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  #7  
Old 12-05-2015, 10:47 PM
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Interesting, but I can actually kind of see that, if you have a 2.88 with an OM616 and stick shift.
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  #8  
Old 12-06-2015, 08:03 AM
t walgamuth's Avatar
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Yeah, I got 35 like clockwork with my 300D euro NA running a 307 diff and the five speed od tranny. It topped 40 on a couple of fills when driven back and forth between Lafayette and Muncie by my #4 daughter on roads with 55 mph limits.

If you could pull it with the same gears and a 240 motor you should be over 50 mpg.
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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.
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  #9  
Old 12-06-2015, 03:42 PM
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If it works for you that is all that matters.
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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.
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  #10  
Old 12-06-2015, 04:26 PM
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How high do you have to rev the engine/slip the clutch on a hill start? Now I'm really curious to drive that thing...

EDIT: And how steep is the hill?
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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."
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  #11  
Old 12-06-2015, 05:22 PM
t walgamuth's Avatar
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Despite what he says, taking off on a hill would be an adventure. It was with my 300D with the same gearing so a 240 would be worse. Maybe they don't have much in the way of hills where he is from. (Sweden?)
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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.
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  #12  
Old 12-06-2015, 05:24 PM
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With a stopwatch, what's your 0-60 now?
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  #13  
Old 12-06-2015, 06:06 PM
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0-60

Quote:
Originally Posted by mannys9130 View Post
With a stopwatch, what's your 0-60 now?

I'll check but from a rolling start it should beat yours.
The "hill" was really scary, I parked valet in an underground structure. They returned the car right at the exit ramp which curved up to the left at greater than 45 degrees. I didn't have to "slip" the clutch at all but I did have it floored. Quite frankly I would have been afraid of this hill with the OEM diff.
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  #14  
Old 12-06-2015, 08:23 PM
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0-60

Quote:
Originally Posted by mannys9130 View Post
With a stopwatch, what's your 0-60 now?
What's yours?
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  #15  
Old 12-08-2015, 10:45 PM
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Quote:
Originally Posted by Grzpdlr View Post
What's yours?
Here's all the information we need to determine who is faster.

Quote:
Originally Posted by MB_FanAddict View Post
1984-1985 190D 2.2
5-speed manual 0-100km/h (0-62.1 mph) 18.4 sec top speed 97 mph
4-speed automatic 0-100km/h (0-62.1 mph) 19.1 sec top speed 94 mph

1980-1983 240D
4-speed manual 0-100km/h (0-62.1 mph) 22 sec top speed 89 mph
4-speed automatic 0-100km/h (0-62.1 mph) 24.7 sec top speed 86 mph
Quote:
Originally Posted by DslBnz View Post
The 240D weighs about 3250 curb weight with 67 bhp 97 lb/ft of torque and a 3.69 differential.

The 190D 2.2 weighs 2700 lbs with 72 bhp 96 ft/lbs and a 3.42 differential.

On paper, it certainly looks like the 190D would be faster, quicker, and more economical.
The 190D 2.2 5 speed manual will always have a quicker 0-60 time than any 240D 4 speed with any diff combo
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