...these are actually no taxis.

The green and the blue car are plain limousines, the white and the yellow used to be unmarked police cars (in german called Kripowagen) The white one is my daily runner.

Hence the grill under the front bumber for the signaling horns. On both cars you can attach a police light through a whole in the roof.

Kind regards
Eberhard

Diesel police cars? "Stop or I'll blow soot at you!"

Your white 123 looks really nice. What is it?

...lets see if I get a good shot with my Coolpix of the table.

Kind regards
Eberhard

...only the new E-Class and C-Class models they leased are Diesels.

In the good old days police cars were all gasoline engines.

Is this now getting offtopic Should we stop?

Kind regards
Eberhard

99% of the police car are diesel (without a turbocharger most of the time) !
So they are few powerful, very slow.
That's why it's impossible for the police to chase someone. Most of the time, the criminals steal a powerful car (Audi, BMW ...) and after, they go on the highway and drive very fast (faster than the police car enable) and .... bye bye !

__________________
in France : 240D 1981 380 000 km
240D 1984 252 000 km
300D 1978 325 000 km
in the US : Ford Tempo 1993 70K

91 Octan fuel on a reduced compression engine (for the japanese market, with factory catalytic converter, don't ask how we got that beauty): 8,72 l/100 km

Super fuel with 95 Octan average on alle cars with proper adjusted ignition (29° before OT): 8,39

Super plus with 98 Octan with 31° before OT: 8,39

Shell Optimax with 99 Octan with 34° : 8,15

This all looks pretty close. Problem was, that we only drove the testloop at about 100 km/h.

If we could have some high power output stretches, the differences would have been bigger (that is experience we made during daily driving.

The final conclusion was, that the best fuel with the right setting of ignition timing in the high compression engine gives the best economy.

Kind regards
Eberhard

Eberhardt,

Are you kidding? This is more interesting than most of the rest of the thread. Keep it up, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)

My 1974 W115 240D is finally starting to show me some improvements!
When I first got it, 72mph, that was all! And that was a 2 miles run! Take off was so bad a bicycle could beat me easily!

Then after my DK and Premium and finally no more clouds of black sooty smoke!

About a week ago I got it up to 78mph! Today it finally made it to the 80 and beyond! 82+mph. Then a horrible thing happened! a small rise in the road! I suddenly went for a very hard to attain 82+ to 76mph! Freeway. It took me about one maile to get it there only to have a small rise in the road take it all away from me!

I held it to the floor for a 15 mile run. Then back again, but that was short lived, Michigan is under a road destruction process and so that killed any idea of getting those high mph's again.
So, I can live with that! Car runs flawlessly.

I am wondering??? does it make a diference if it is automatic verses a manual transmission for speed?
Is a MB auto tranny like a C6 where it is a total lock up in the gear or is it a non-locking tranny?

The automatic models of this generation are about 3 mph less fast than the same model mated to a manual gearbox.
I think also that it is a non-locking tranny but I'm not quit sure about that.

__________________
in France : 240D 1981 380 000 km
240D 1984 252 000 km
300D 1978 325 000 km
in the US : Ford Tempo 1993 70K

...but with a rather stiff torque converter.

Kind regards
Eberhard

i have a 1982 240 d with 4 spd manual..

i have no problem burying the needle on my speedometer to past 100 mph.

i have verified 103 mph with my gps on during this stretch of flat road..

so yes your 240's should easily do 90!!

How did you mange to bring up that old a thread with your FIRST POST ?

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

My observation is that around 85 the governor kicks in and you don't accelerate any more. Now if you have a 5 speed od the gov won't kick in until 18% higher or about 100 mph.

Unless this governor is different on a euro (a possibility) I don't see 90 mph on a four speed except down hill or with a tail wind.

Or the governor might be disabled.

__________________
[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 still own a 240d four speed in storage that seems a little quicker than average. I put it in storage when we got home till I get time to find out why.

It does have a new replacement factory engine in it installed a year before I brought it. The main reason it is left to examine is the fuel milage appeared to be better than average as well.

This was not scientifically verified just how it seemed on the seventeen hundred mile trip home. Yes it was an ebay car and the vendors basically knew nothing about it.

Other than their german former mercedes benz mechanic in europe I talked to. He made a recomendation that I buy it. He personally drove it for three weeks and said I would not be dissapointed.

I hope when and if I get to it. What was experienced on that long trip home will not prove a total figment of my imagination.

I am primarily interested on why the fuel milage seemed better than it should have been. It was very hot on that trip and I have noticed older volkswagon diesels get better milage when it is very hot out. I have at the same time never heard this mentioned on the 240ds so I have to discount it.

We drove down in my wifes new at the time tdi volkswagon diesel to pick it up. Every time we fuelled up it seemed to take more fuel than the volkswagon. Still not enough more to make a lot of sense though.

One other concern is I always thought the revs were limited to protect the injection pump. The block is capable of higher revolutions. This may or may not be accurate.