I took my first trip with the fiver in the 83 240/300 euro na car with the newly installed five speed.

I am running about 37 front and 35 rear cold air pressure in my new michelin water edge (is that right?) 195/70r14 tires.

I drove to oxford ohio and attended a porsche ralley with the #1 lovely daughter her hubby and the three gkids. (Good time), then I drove up to Colombus to their home and then back home. 442 miles 12.05 gallons. That works out to be 34.15 after reducing it by 5% for the odometer error.

I estimate about 2/3 was interstate driving 72-73 when alone and on level ground. I let her speed up when going down hill and slow going up and drove whenever convenient in somebody's wind shadow, sometimes getting up to 80 briefly, (never less than four car lengths I estimate). The other third was secondary roads driving 60 -65 and some stops. There was nearly an hour of idling in Oxford with the air running waiting for this or that.

I found my odo is 5% optomistic, by the mile markers and my speedo is pretty much right on the nose.

I bet on a trip with only running 65 I could get 36!

I would say the five speed transplant is performing as well or better than expected.

I am pondering some belly pan work and so forth in an effort to reach 40 mpg.

Tom W

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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.

Hmm. why is your odo off? that's the right rear gear for the oe speedo... are you sure it's not slipping?

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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!

Now, don't be a spoil sport!

I don't know why. It does not seem to be slipping. If it were slipping it would not be consistant about it would it?

Hmmmm I wonder if it might be a speedo for a 2.88 rear? But the speedo seems to be right on the money.

Its the most inaccurate odo I can remember in a benz. They are usually only one or two percent off.

Tom W

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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.

Possibly tires. Mine is pretty much exactly 5% off at all speeds (shows 63 wne GPS shows 60).

I have also have stock size tires - 195/70/14s on it, and it is an unmolested 1 owner car (I'm the second owner).

So the only thing I can figure is that the Falken brand tires that are on it are slightly undersized for their rated size...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

The spedo for a 2:88 VDO# 123 542 27 57. that is for a 85 300D.

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

Well Tom this is pretty conclusive proof that meddling with gear ratios does have a real upside. I suspect with a turbo engine you might have even got a couple of miles more per gallon. For quite awhile a lot of members thought changes were not worth the effort milage wise.

I always felt I would be pleased enough with the noise reduction alone. The increased milage just a bonus. When your arm tires from shifting the five speed transmission I can help.

I had a 2.41 in my El Camino, naturally aspirated V8 diesel w/130HP

Was a slug off the line, but still fun to drive.

0.70:1 overdrive gave me something like 1,800RPM @ 75MPH

The millage was astounding, around 35MPG.


Tell me what happens if you slap 2.88's or lower in a 300D

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Vehicles:
2002 SLK 230
Gone but not forgotten:
1983 300D
1981 El Camino 'OILBRNR' - 6.2L diesel
OM617 powered '86 F150
1984 BMW 524td
2001 VW Beetle TDI
1994 Sunurban 4x4 6.5L diesel

Pretty impressive numbers. How many passengers were in your car?

Just me about 205# fully clothed, and an overnight bag and an extra 50# steel wheeled spare!

On the highway weight really has virtually no effect.

Tom W

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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.

If I could just find a six speed tranny I could pull a slightly taller final ratio but a lower first would be essential.

A lower first would be a great improvement in this setup.

Tom W

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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.

Barry....don't hold your breath!

You can have my fiver when you pry it from my cold dead hands!

Tom W

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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.

Nice results, that is promising. it is too bad those transmissions are not more readily available.

makes me wonder-what's the smallest brownie box made??


I disagree- when I roll fully loaded, it definitely cuts down on mpgs. I reckon 3-4 mpgs anyways- I'd have to look closer @ the mileage log.

Of course, when I load the wagon, she's pushing 5500-6K. and we have lots of rolling hills around here.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.

Congratulations Tom, no one will ever convince me the five speeds not worth it.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

A five speed and mid 30s fuel economy!? I hate you!

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

nice numbers, Tom, looking forward to 40mpg