Diesel performance Mods - What have you done? What HP do you get? - Page 3 - PeachParts Mercedes-Benz Forum

wolf_walker · #31 01-25-2004, 09:59 PM

I always enjoyed reading the EV Pusher and it's tials and such.
But I must say, that guy has really bad luck! I never had so many problems with a VW, even just he normal stuff..

#32 01-25-2004, 10:05 PM

Quote:

Originally posted by http://www.mrsharkey.com/lpg.htm
...also IDI (Indirect Injection), which means that the diesel fuel is not injected directly into the combustion cylinder, but instead enters a "swirl chamber" where ignition takes place. The flame front then shoots out of the swirl chamber into the combustion chamber, where it combines with the air (and LPG) to force the piston down in a power stroke. Apparently, these engines have a problem in that the flame front exiting the swirl chamber ignites the LPG/air mixture, which then causes back pressure, preventing the proper expansion of the ignited fuel leaving the swirl chamber.

psfred · #33 01-25-2004, 10:26 PM

I'd guess more like the propane detonates first, so the diesel fuel flame stays in the pre-chamber or swirl chamber too long. Melts things, along with the detonation damage.

Propane/air is explosive in the correct mixture -- don't remember exactly what that is, probably 5% to 15% propane. It burns REALLY fast. Much faster than the fuel injection, anyway.

Peter

Telecommbrkr · #34 01-28-2004, 01:53 PM

I know that I started this topic with diesel performance mods in mind, but as you guys have been posting your thoughts, suggestions, warnings, and experiences on the subject, it has occured to me that there is more to creating 'performance' in our MB's than just the engine.

I feel kind of dumb that I haven't carried over any of my experience from hot rodding with muscle cars etc. What I mean is that not only do you create performance with engine HP, but as others have suggested, you have the whole drive-train, exaughst, and suspension to play with as well.

So far from this forum I have put together the following plan:

W126 chassis 617 Turbo diesel
ADD:
Intercooler
Increase Boost
Increase Fuel
EGT and Boost gauges a MUST!
Propane injection (not to exceed 6psi total)

Now with the info from this topic: Well - I have found the MB diesel "easter egg"

We can fool around with rear-end ratios. Do you want a high-speed road rocket, or do you want a drag-strip bullet?

Also with the info from this topic: 300SD Conversion to 4 speed Manual

And with much work there is the potential to have a five speed sending the HP to the rear wheels at our discretion.

I own a 1970 SS Chevelle, 396, turbo 400, console, functioning cowl induction hood, number matching car. blah blah blah.

I love that car. But you know, ever since I bought our 300SD and started reading this forum and others, and researching the performance options with diesels, and mostly just seeing and hearing what you guys have done toyour cars, I have found a new 'love' so to speak. Don't get me wrong, I'll never part with the SS, ever. I am a hot rodder through and through. As I am driving through the country-side and I see some old vehicle in a field, I see a finished ride with all sorts of go-fast parts, nice paint and cool wheels. My wife just sees a POS!!?

We could be pioneers in a new theme in custom cars. I don't know about you but I'm willing to forge ahead to develop some of these new things we can do within the realm of MB technology. I think that we can all work together and make these things happen. I sure would like to have a 200HP W126 with a five-speed cruising down the highway, burning biodiesel, and have the ability to go over 140MPH, and have the whole car look like it came out of Germany like this.