Resaerch prodject for all you injector gurus.

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I am running Bosch injectors that are from an off road application Cummins B5. 9. It is a popular upgrade in this area for 1st gen trucks and is being used by several injection shops that I know. I am thrilled with the performance but as of yet, I've not been able to find out what the original OEM application for this injector is and what the H. P. is in that application.
I've tried injection shops, Cummins Intermountain Northwest, etc. Nobody seems to have the ability to trace the part # to the application. I get a lot of comments from other Cummins owners and it sure would be nice to tell them what these suckers came out of.
The Bosch part # of the injector is 0432133875.
Your knowledge is greatly appreciated.

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'93 W250, LE, CC, 4x4, 5spd. , Cummins, K&N, 16cm turbo, High flow Bosch injectors, Professionaly rebuilt and calibrated pump, straight exhaust, Lund visor w/lights, 5th wheel, Gooseneck, H. D. rear hitch, Aluminum everything.

[This message has been edited by Don D (edited 06-08-2000). ]

 

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Don, have you tried http://www.bosch.com and then click on the contacts link? They might be of help...

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2001 HO 6 speed Regular Cab SLT 4x4 3. 54 anti spin 2500. Used for the daily grind and sneaking away to some secret Baja beaches toting a cabover

 

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Don D:
The injector #0432133875 is a Bosch #.
The Cummins injector assembly # is 3919744.
The Cummins nozzle# is 3919745, the Bosch nozzle # is 0433175040.
Opening pressure is 245/253 Bar.
The sealing washer is #3906659.
It's a 7mm tip, used on 6 cyl B engines, CPL#856.


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'98 2500, Cummins 12v, 5spd, 4wd, 3. 55, GOT DIESEL?

 

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moving to 1st generation forum

 

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And how does that translate in terms of horsepower?

 

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Call or drop by a Cummins Distributor/Repair facility. Ask them to check the power level and rating for engine B5. 9L CPL#856.

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'98 2500, Cummins 12v, 5spd, 4wd, 3. 55, GOT DIESEL?

 

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It will not be accurate at all. The pump settings for the engine that those injectors came from are for less fuel than your stock pump. If memory serves, it's about 10% or more lower, but the horsepower is a bit more. The only way to get a handle on it is for someone to run one on a dyno before and after, and tell us what the increase was.

The pumps for the Ram have the highest fuel settings, but are nowhere near the highest horsepower or torque. The difference is mostly in the injectors - and as you can see, changing them has a very noticeable difference.

 

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Thanks guys for the replies.
Old School, I've got to admit, your first reply went right over my head. But now I understand. Thanks P. W. for putting it all in perspective.
From what I gather, it really doesn't matter what the HP of the original application is. What matters is the combination of these injectors, my pump, and the uncontrolable grins on my face each time I put the pedal down. #ad
Good info! Keep it up!
BTW Power Wagon, I heard You guys have a dyno up there. If that is the case, I'd like to stop by and give it a spin sometime. Have you guys dyno'd any other 1st gens after the treatment?

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'93 W250, LE, CC, 4x4, 5spd. , Cummins, K&N, 16cm turbo, High flow Bosch injectors, Professionaly rebuilt and calibrated pump, straight exhaust, Lund visor w/lights, 5th wheel, Gooseneck, H. D. rear hitch, Aluminum everything.

 

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PW is correct. I stand corrected.
The CPL power rating will "ballpark" the power by the engine AS BUILT BY CPL.
The ACTUAL power generated is conditional upon the INDIVIDUAL components installed.
Dyno, benchmark, or seat of the pants (rear pocket dyno)will indicate power level movement.

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'98 2500, Cummins 12v, 5spd, 4wd, 3. 55, GOT DIESEL?

 

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The dyno you referred to belongs to Walla Walla College. In order to run something on it, you have to make arrangements with the Industrial Arts Automotive department.

I have used this dyno twice, once to run my 440 Mopar on, and once for the Power Wagon, but I need to run the PW again. If you are going to make a long trip to a dyno, this really isn't the one I'd make my first choice. Several Cummins dealers have dynos, and I'd be more inclined to use them.

However, WWC Industrial Arts could use our support.

 

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Cummins lists CPL 856 as a 180hp application. Compared to the stock 160hp '93 Dodge-Cunmins (CPL 1579)

1. 15mm plunger lift vs. 1. 25 lift! Makes me think this combo will make big hp (200+) if the timing is bumped to 1. 25 or 1. 40.

Wheels are turning now!

Stab

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'89, CC, SB, 5sp, 3. 54, 16cm2 housing, maxed fuel, KN, Banks exh w/muffler, Autometer liquid filled gauges, Factory tach option, 100% Dyna-Mat, Horton fan clutch, Firestone air bags, Chrysler V-twin air comp, 2. 5" lift, Rancho Shocks, Alcoa LTS, BFG 255/85/R16 MTs (33. 3")

 

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Until I get on a dyno the following is pure speculation. Based on my pickups ability to pull my big 5er up a five mile constant 6% grade at 4000+ altitude, and maintain 60-65 mph, and even have a little pedal to spare at times in 4th gear, I would have to assume these injectors by themselves are easily a 60+ HP upgrade. My timing is at 1. 35 along with 16cm turbo, no muffler, K&N, etc.
I used to pull the same hill in third with all upgrades except the injectors and timing. I would guess 200 HP to be quite conservative. But I could be mistaken. Some day I'll have to find out officially.
One thing I noticed right away was she'll get hot on a warm day and a long hard pull. Pyro is on order.
I'm not going to comment on fuel mileage much because I haven't been keeping accurate track of it since the upgrade, but I will say that I am alarmed at the consumption rate so far. Most of the miles have been pulling my trailers. I was previously under the impression that it would at least stay the same or possibly improve. Honestly, after the last couple trips, I'm kind of afraid to do an accurate check. Maybe that's part of the price I have to pay for power #ad

Overall, I'm happy with the upgrade.
Don.

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'93 W250, LE, CC, 4x4, 5spd. , Cummins, K&N, 16cm turbo, High flow Bosch injectors, Professionaly rebuilt and calibrated pump, straight exhaust, Lund visor w/lights, 5th wheel, Gooseneck, H. D. rear hitch, Aluminum everything.

 

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CPL 856, 180 rated hp @1. 15 lift, 4th gear pull with load, hmmmmm..... you could do worse.
Good info STAB...
Good direction and thanks for the "real world dyno" Don D.

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'98 2500, Cummins 12v, 5spd, 4wd, 3. 55, GOT DIESEL?

 

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200+ estimate was with no other mods. I figure I'm about 230-240 without the injectors. This truck was dynoed @ 198 rear wheel hp in the past and that was before many of the up grades. I'm saving for the injectors now and adding the intercooler before the injectors are installed.

 

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i have to type w/1 hand right now.

list 4 me your total weight, height of trailer, and rpm/mph/%grade (plz be precise-accurate) and i can figure RW and flywheel HP. I have a spreadsheet calculator that is quite accurate.

hand? minor surgery. doing fine.

 

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PW, thanks and that would be great!
One small problem..... No tach!!!
Thanks anyway. #ad

Hmmm. If you really want to make this a math test for yourself, I have 3:54 gears, 235/85R-16 tires, GCVW is 17000 lbs, trailer is 12'2" tall. We could figure conservatively that it pulls down to 60mph on a steady 6% grade in 4th gear. (it has done that with cross wind, and hot outside. )
You're a glutten for punishment!! #ad


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'93 W250, LE, CC, 4x4, 5spd. , Cummins, K&N, 16cm turbo, High flow Bosch injectors, Professionaly rebuilt and calibrated pump, straight exhaust, Lund visor w/lights, 5th wheel, Gooseneck, H. D. rear hitch, Aluminum everything.

 

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sez 250 chassis HP. if accurate, you have 250 at rear wheels. grade & speed changes alter it fast. 1% less grade is 60HP less. 2K lbs change 15K not 17K means 25HP less. 10 mph slower is 55 hp less.

hope this helps.

 

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Thanks P. W.
I really was being conservative. Nice to know she's running up with the big dogs.

Oh my god!!! Does this mean it's BOMBED?

If not, it's close enough for me. #ad


[This message has been edited by Don D (edited 06-12-2000). ]

 

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Don D
What would you say your mileage change is with the injectors? I am thinking about getting these injectors but I like the 17 mpg I get while towing 12K combined and would rather not lose that.
Matt

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90 W250, 5-speed, 3. 54 gears, 16 cm2 housing, tach, pyro, and boost gauges.

 

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Lt. I'm taking a trip this weekend, pulling a light trailer one way. (I'm guessing not over 11K comb. wt. ) Coming home with empty trailer. It will be around 800 miles round trip with lots of mountain driving. I'll keep accurate track of mileage both ways, weigh both ways and post Monday or Tues.
Don.