Baseline idea for say 20% HP for a W123 300D.. - PeachParts Mercedes-Benz Forum

Carrameow · #1 05-10-2007, 05:03 PM

I was thinking of first dissassembling one of my old IP injection pumps and seeing how I could make it deliver more fuel and then putting a larger Mitsubishi TD04 Turbo on the engine vice the present Garrett turbo. the key would be larger amounts of fuel delivery. I wont know until I take the IP apart or get it on a flow bench.

#2 05-10-2007, 05:13 PM

Quote:

Originally Posted by Carrameow

Compared to the East Coast being on the West Coast is like changing Planets

Now that you live on Vulcan you should update your profile, it still says you live on Uranus.

Your IP project sounds interesting (and potentially expensive), you will need a EGT gauge if you get that far.

2.5Turbo · #3 05-10-2007, 05:17 PM

And based on previous observations of projects like this, plan on adding an intercooler to the list. With that bigger turbo and more fuel, you're going to want the coolest charge air you can get. Of course, like Craig said, an EGT gauge is a must unless you want to melt your engine

. You're also going to want to get a boost gauge.

Carrameow · #4 05-10-2007, 05:33 PM

Quote:

Originally Posted by 2.5Turbo

And based on previous observations of projects like this, plan on adding an intercooler to the list. With that bigger turbo and more fuel, you're going to want the coolest charge air you can get. Of course, like Craig said, an EGT gauge is a must unless you want to melt your engine

. You're also going to want to get a boost gauge.

lets get the IP issues solved first. I dont havethe faintest idea how I am going to increase delivery per squirt--except for fatter injection lines

Astroman · #5 05-10-2007, 05:34 PM

There has been MUCH discussed, learned, tried and acheived by some very knowledgeable folks in your absence carrameow. Start searching for threads on this and the other board concerning turning up the full load fuel stop, intercooling, larger elements, Myna Diesel in Finland etc. Look up some of Forced Induction's threads..

Carrameow · #6 05-10-2007, 05:43 PM

Quote:

Originally Posted by Astroman

There has been MUCH discussed, learned, tried and acheived by some very knowledgeable folks in your absence carrameow. Start searching for threads on this and the other board concerning turning up the full load fuel stop, intercooling, larger elements, Myna Diesel in Finland etc. Look up some of Forced Induction's threads..

There is nobody smarter than someone whom knows nothing about waht they are talking and whom hasnt done any research on it...ask my Teen Age Daughter---

howver dont count out my resourcefulness and stubborness and willingness to ruin a great working car--I mean I trashed one engine when I had a great new crankcase vent idea that got clogged...

Astroman · #7 05-10-2007, 05:50 PM

Nah, nothing like that. What I was saying was you can have alot of fun without all the head scratching by learning what is already known about increasing the fuel delivery and other such activites..

ImBroke · #8 05-10-2007, 05:54 PM

Some of the greatest things have come from trying something and failing.
Of course, some of the greatest failures come from the same thing..

patbob · #9 05-10-2007, 06:25 PM

Quote:

Originally Posted by Carrameow

lets get the IP issues solved first. I dont havethe faintest idea how I am going to increase delivery per squirt--except for fatter injection lines

The FSM has a diagram of the interior of the injection pump (I think that's where I found it). Also, while I haven't had time to check out the Fin websites, this sounds like the kind of thing they might be into, so I'd look there for info too.

As I recall, there's a cam-wheel-driven piston in there that pumps the fuel, and a valving setup off the same shaft to control which cylinder the fuel goes to (or maybe I got that backwards). You need to increase the voulme pumped by the piston, so either deeper stroke or bigger bore.

Unless you're talking 2X the fuel or something, I wouldn't think you'd need injection lines with a bigger inner diameter given the pressures we're talking. Not to start with anyway.

#10 05-10-2007, 09:02 PM

Quote:

Originally Posted by Carrameow

I was thinking of first dissassembling one of my old IP injection pumps and seeing how I could make it deliver more fuel and then putting a larger Mitsubishi TD04 Turbo on the engine vice the present Garrett turbo. the key would be larger amounts of fuel delivery. I wont know until I take the IP apart or get it on a flow bench.

Your answers are here: http://schumanautomotive.com/forums/forumdisplay.php?f=19

Brian Carlton · #11 05-10-2007, 09:05 PM

Richard.........follow the link that Lance provided..........but.......be careful.........you can melt a piston in short order if you're going to be stupid.

#12 05-10-2007, 09:11 PM

Quote:

Originally Posted by Brian Carlton

you can melt a piston in short order if you're going to be stupid.

Yes, caution is advised if you are going to mess with your pumps internal settings. Pyrometer, intercooler, and a very healthy engine are highly recommended.

Old300D · #13 05-11-2007, 11:55 AM

Quote:

Originally Posted by Carrameow

lets get the IP issues solved first. I dont havethe faintest idea how I am going to increase delivery per squirt--except for fatter injection lines

That isn't going to do it. Fuel delivery volume is controlled entirely by the IJP.