Performance 617 update.... - Page 2 - PeachParts Mercedes-Benz Forum

SYRacing · #16 12-17-2004, 12:19 PM

Yeah lol..my poor ass needs a digital cam/video

I'll take some 0-60 runs of the D complete with lots of turbo noise

The car itself is actually really clean, only has a couple spots of rust. I'm going to wax it and people will not believe I bought it for $200
I'm going to get a stop watch and do some 0-60s for you guys.....not a lot of poeple are willing to mod one of these out.....i just won a ford probe intercooler off of ebay with an extra injector on it...should be intresting

spray methanol in to cool the incoming charge even more

I also got the proper solenoid valve for propane injection, I'm going to a pistons game this weekend otherwise I would have propane on it as well. When it's all assembled and working I will compare EGTs and power output via my 'seat of the pants' dyno.

Going to start it out at 1psi, perhaps move to 2. I was reading that our mercedes diesels love propane!! Then comes exhaust. 3 inch all the way back with no muffler!!

#17 01-04-2005, 02:28 PM

Here is my findings:

12.5-13psi Boost
ALDA Maxed
No Visible Smoke
EGT's Not over 1100F

I did dump my resonators and throw in a flowmaster dual chamber (see the New Exhaust on the 300SDL Videos! post for my videos further down the thread)

My Probe is located, from below, basically, so that it points twoards the engine from the turbo outlet side of the manifold
I will be putting up a DIY page here soon so you can see where it is.
It was no easy to put it (had to pull the manifolds).

Sounds like SYRacing and I need to commence communication

I CAN if people are interested drop my boost to around 9-10psi to see what the EGT's are if there is enough interest

Brandon

SYRacing · #18 01-12-2005, 04:34 PM

my friend at the local mercedes dealer is getting all of the old injection pumps they had upstairs. He's getting 5 240D IPs, and 3 617 IPs..condition unknown most were removed from a "junked" car..I'll be taking the rear housing off of one of the 617 pumps and attempting to make what Mauri described. I'm thinking about putting a pipe plug on the rear of the pump. When you want power, unthread the pipe plug and fish in a flathead screw driver to adjust. Sounds good but will it work? no idea. Stay tuned!

SYRacing · #19 01-12-2005, 04:55 PM

EGTs are much higher on mine....ALDA maxed, boost @ 9psi max I can attain 1175-1200 degree temps...probe is in almost same location as yours....only difference is that you have exhaust on yours and mine is stock....how bout that factory MBZ exhaust? pipe is pipe and the MBZ stuff isnt big enough!

I did some messing around with the alda on mine, with the alda maxed I would only see 2-3psi of boost @ cruising speed...with the alda 1/2 turn from maxxed I see 5-6psi at cruising speed...I can only get it upto 1150 with it not maxed though.....with boost @ 9psi.

rwthomas1 · #20 01-12-2005, 05:42 PM

SYRacing,
If you are looking to unload a 617 turbo IP please let me know, thanks, RT

wolf_walker · #21 01-12-2005, 06:20 PM

Quote:

Originally Posted by SYRacing

EGTs are much higher on mine....ALDA maxed, boost @ 9psi max I can attain 1175-1200 degree temps...probe is in almost same location as yours....only difference is that you have exhaust on yours and mine is stock....how bout that factory MBZ exhaust? pipe is pipe and the MBZ stuff isnt big enough!

I did some messing around with the alda on mine, with the alda maxed I would only see 2-3psi of boost @ cruising speed...with the alda 1/2 turn from maxxed I see 5-6psi at cruising speed...I can only get it upto 1150 with it not maxed though.....with boost @ 9psi.

On the boost and alda thing. I observed on my VW turbo diesel that with the fuel enrichment system disabled all together, I saw more boost on the highway and noticably higher engine oil temps. A Not Good Thing. Just FYI.

#22 01-12-2005, 06:26 PM

Quote:

Originally Posted by SYRacing

EGTs are much higher on mine....ALDA maxed, boost @ 9psi max I can attain 1175-1200 degree temps...probe is in almost same location as yours....only difference is that you have exhaust on yours and mine is stock....how bout that factory MBZ exhaust? pipe is pipe and the MBZ stuff isnt big enough!

I did some messing around with the alda on mine, with the alda maxed I would only see 2-3psi of boost @ cruising speed...with the alda 1/2 turn from maxxed I see 5-6psi at cruising speed...I can only get it upto 1150 with it not maxed though.....with boost @ 9psi.

I am running 13.5psi boost on mine, ALDA maxed out, exhaust= dumped resonators and dual chamber flowmaster

My EGT's run right around 1050-1100 no matter what I do.
Give it is slightly cold here (35-55) but still lower numbers.
The Probe is pre-turbo as well.
Crusing along at 65 gives me about 5-6psi boost and 700 EGT's.

Just for infos sake

JDmills · #23 01-12-2005, 06:41 PM

This is an interesting thread. I have been toying with this daydream since I got my TD a couple of months ago, but I the car has a few more bugs to work out of it before turning up the fuel.

What I have learned from my time spent on the Turbo Diesel Register website about Diesel performance is as follows, as best my memory serves:

On that website, they are generally working on the 5.9L Cummins Diesel. Performance upgrades are astounding, and I would hope to duplicate some of what those folks have managed. for instance, the early trucks with 160HP/400LB-FT, (with a Bosch IP) seem to be able to be uprated to around 300-350 HP/600+LB-FT through the rear wheels.

the basic's are that airflow through the engine controls EGT. Airflow does not produce power, that is what the fuel does, but with enough air moving through the engine, then you can add fuel to make more power.

on those trucks that have had a performance exhaust upgrade, (stock was 3'') to 3.5'', was able to support about 350 HP. switching to a 4'' gained about 7 horsepower, but was more useful in helping to control EGT, at the 350ish power level. also better flowing exhaust may help spool up the turbo at a lower RPM.

Performance air cleaners can be helpful, as a restriction there will hurt overall air flow into the engine.
porting the exhaust manifold/turbo/turbo outlet can help control EGT, as that is usually the most restrictive part of the the whole exhaust system.

Oh Summit racing has some reasonably priced streight through mufflers up to 3'' in diamater. Flowmaster's and other chambered mufflers that use the sound waves to cancel out the noise dont work on a trubo engine. Heck in some states a turbo is considered to be a muffler. On my truck, I went with a muffler from summit, it was about $30. and it helps keep the noise down in the cab.

Injectors can make more power, with out increasing EGT, and in some cases drop it some, by the benifit of a more efficent design. not sure if there are any posibilites on a inderect injected Diesel...

Best of luck, I look forward to following your lead next summer.

JDmills · #24 01-12-2005, 06:43 PM

Oh and I have read that some of the fella's have seen EGT's up above 1400, for a short time and lived to tell about it. (doubt I would have the guts to go that High)

black280ce · #25 01-12-2005, 06:58 PM

Quote:

My EGT's run right around 1050-1100 no matter what I do.

that temp is in Fahrenheit isnt it?

Angel · #26 01-12-2005, 07:25 PM

What would happen if you lowered the open pressure (pop point) on an injector ? is that a way to get more fuel in ?

KCampbell · #27 01-12-2005, 08:18 PM

Quote:

Originally Posted by Angel

What would happen if you lowered the open pressure (pop point) on an injector ? is that a way to get more fuel in ?

It seems to me that it would also change the timing, since the lower pressure would be reached sooner. On the VWs they increase fuel delivery by changing the size of the injectors, going with a larger orifice. These would allow more fuel while keeping the pop pressure unchanged, and so presumably the start of delivery point.

Kevin

boneheaddoctor · #28 01-12-2005, 08:19 PM

Quote:

Originally Posted by KCampbell

It seems to me that it would also change the timing, since the lower pressure would be reached sooner. On the VWs they increase fuel delivery by changing the size of the injectors, going with a larger orifice. These would allow more fuel while keeping the pop pressure unchanged, and so presumably the start of delivery point.

Kevin

Problem is I don't think there are many options for our engine.

SYRacing · #29 01-12-2005, 10:54 PM

I got 3 IPs for 617s sitting on my work bench

I've taken the rear cover off of one of them and noticed the full load adjustment screw...just wondering what direction to turn it...it appears that unthreading it seems to be the way to go but im unsure. It's nice seeing one when its off of the engine! Also started removing a bunch of the AC crap that I wont be using anymore. AC condensor is offline, it appears that I will be able to fit an intercooler in front of the radiator. Did a diesel purge today also. Just trying to work the bugs out of that stupid oil tube grommet setup....I think the old worn out o-ring that I re-used isnt working upto par because its leaking oil out of the top of the grommet...guess ill just order one.

The dealer I got my stuff from has a BUNCH of vintage MB stuff in there attic..they have pretty much given me free reign on taking anything i want. I've got a couple 123 tail light assemblys and all of those injection pumps..didnt see anything else that I could possibly use but if some members are intrested in some parts let me know and I will search! Mostly taillight assemblys and even some brand new wood trim (unknown body style)

rgp123 · #30 01-12-2005, 11:16 PM

SY, is there any possibility of your getting some pics of the "attic parts" you mentioned? It could be that some of us would be willing to help you m$k$ your c$r g$ f$st#r. If you g$t my dr$ft.

Rick