jerro95

Right now I'm just fed up with fuel prices and I've always been considering a Mercedes Diesel, since test driving a 300D Turbo during the last summer. Overall I love those diesel engines. I would want a clean 300D Turbo with a/c, but I would baby that thing so much that I wouldn't want to drive it everyday, so I'm considering the 190D. I know that there are many variants of 190D engines. In your opinion which engine do you like the best. I live in the United States, so I want to hear suggestions that would pertain to the U.S.

I would prefer the diesel engine with the most hp.
Iwould also want to convert it to run off Waste Vegetable oil because I'm tired with gas station prices.
I also have a few questions as well

1) These engines are mechanically fuel injected right?

2) Due to the lack of power with a diesel, would this car be "safe" in terms of the need to hit the gas to avoid an accident?

3) When having 4 passengers , including the driver, will it put more strain on the engine with all the weight it would be carrying assuming that everyone is under 150lbs but heavier than 100? (sorry for this random one)


4) Manual or automatic?

DocWalla

I'd say 2.5 l manual. And yes 400-600lbs extra will bog down any car somewhat. The 2.3 I have that runs 91 only can barely get up and go so idk bout the diesel.. They are fine past 2500rpm, but until you get there it's slow going.

jerro95

What mpg does the cosie get? I'm looking more into the diesel because of the gas mileage and that those diesel engines are practically bulletproof. You may call me crazy for this, but I want to convert a 190D to run off WVO (Waste Vegetable Oil). How is the ride as far as comfort?

If I were to get a cosine or a 190E, I think I would go berserk having to pay premium at $4.45 here in Southern California.

But anyways I like any old Mercedes older than 2000.

DocWalla

Mine gets 20 mpg city and 25-27 hwy. 91 octane. Don't have a diesel so idk.. Wikipedia ?

jerro95

Yeah, now that i think about it, I will not convert it to run off who, although, I am more leaning into making my own biodiesel, which seems rather cool.

DocWalla

Best of luck, and remember.. We love pictures here at mbworld.org!

jerro95

Oh yeah most definitely I will be taking pictures once I finally get one.

fuga28

Hi. I don't know which diesel engines were sold in the US, but at least in Portugal the most popular engine is the 2.0D. It only develops 73hp, but for daily city use is more than enough. My fuel consumption with a 60 Liter tank used to be around 750Km in city use only. On the road I can do around 900Km. I never left the tank got to the end, so probably it could do some more.
Around here it were also sold the 5 pot diesel 2.5 with 90hp and 2.5 Turbo with 122hp. I can't tell you about mileages they got, on open road the 2.5 turbo was a little bit better fuel efficient.
The first engine on my 2.0D made 1498K Km. The one it has now it has about 700K. In terms of maintenance it was basically changing engine oil (around here we usually use mineral Castrol 15w40) every 10K kms (more or less 6000 miles), diesel to the tank, or if you want to change fuel filters more often used veggie oil, after filtering. There's also a metal grid filter on the bottom of the fuel tank that should be cleaned. I tell you that because is very usual that people forget to clean it around here.

ds190

The USA got three engines in a 190D- 601 2.2L, 602 2.5L, 602 2.5L turbo.

http://en.wikipedia.org/wiki/Mercedes-Benz_OM601_engine

http://en.wikipedia.org/wiki/Mercedes-Benz_OM602_engine

MJ50

if u want better mpg, W124 300D will get 30mpg combined which is higher than 190D...

fuga28

Converting what I said in liters per 100kms to mpg (imperial) for the 2.0D (I believe it won't be so different for the 2.2D) 35mpg in city (only), on the road 43.4mpg. Combined it will be 39.2mpg.

http://www.calculateme.com/cGasMilea...G-imperial.htm

You can check the data about fuel mileage on some websites, and if it's in Liters per 100kms, is a good option for you to know. If you want to put it veggie oil, it will run on it, but to be safe, better change fuel filters (pre-filter and filter) more often.

vanir

The relatively low torque at low rpm in the 190 petrol engines is what limits their overall economy (compared to modern engines), diesels don't have this problem. Their issue is flexibility to operate like a petrol engine, which is helped by a turbo (not fitted to increase output but to extend horsepower beyond the torque band, which diesels don't do very well naturally aspirated).
If you want to drive basically like a petrol engine, you want a turbodiesel.

A mate has been converting his diesels to run on vegetable oil. He's destroyed several doing it and spent a lot of time and money trying to perfect the process adapting fuel pumps, reservoirs, heat exchangers, upgrading fuel lines, finding the right filtration system, basically nothing about the fuel system of a diesel engine is compatable, and neither is the construction of the engine itself. After years and a few cars ruined by it, he switched to waste hydraulic fluid as an alternative. And he's killed his diesel Jaguar with that. Cars that should've been running for the next ten years on diesel never skipping a beat basically chewed up and destroyed in months using these alternative craps.

The thing to understand about an engine is they're built to run on very specific fuels, the metallurgy is different for the valves, the rings, when you use another fuel type you have to rebuild the engine for it.
Even LPG should never be run for extended periods in a petrol engine conversion without a full rebuild. It can't have molly rings they have to be iron, you may have to change valves, the piston crowns might not be appropriate, the chamber design definitly won't be. The flamefront is all different with different fuels. The composition of things should be different for different fuels.

Hair brained schemes thought up in people's backyards is pseudoscience. You're talking about re-engineering something that was quite specifically engineered, in the case of MB/DB engines to race quality specifications out of the box.

These are things you do with a clapped out Ford you were just going to trash anyway. Even on a clapped out Ford, if you want it to last out the month before making giant plumes of smoke out the back, you could never run it exclusively on an alternative fuel. So you'd somehow have to install a dual fuel system with different guage lines and filters and heat exchanger, in addition to the stock one, and switch between them periodically, hope you've got a boat sized engine bay for it all.
But the only true way to run an engine on any alternative fuel type is a full tear down rebuild for that specific fuel type.