Maximum HP with stock 12V injectors? - TheDieselGarage.com
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post #1 of 11 (permalink) Old 03-05-2006, 04:30 PM Thread Starter
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Maximum HP with stock 12V injectors?

Any ideas how much can stock injectors support ?

Is 450 hp with stock injectors just wet dream?


I knew 370 hp injectors can support more than 500 hp, but i do not want to install them without marine pistons.

With my setup (check signature) #10 plate fully froward my maximum boost is 35 psi and not vey much smoke. Is my weakest link small stock injectors or do i need fuel pump tuning.

I think with #10 it have to make lot of smoke.

Project T-25 : 1998 Cummins 12V Dodge Ram 2500,Quad-Cab, 4WD, automatic

16 cm turbo housing (without wastgate),boost 40psi, #10 fuel plate,4,1:0 rear (same in front) , 4 inch exhaust, ATS ex.manifold, sport model front grill and pumpers, Tuff Country 5'' lift kit and H2 weels with 35'' tires
My best so far 16.0@87 mph
My target : 600+ hp and less than 13 @1/4
I save money for : DTT billet tranny

1994 Cummins 12V Dodge Ram 3500, Dump truck, automatic
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post #2 of 11 (permalink) Old 03-05-2006, 08:16 PM
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The 98 12v automatics have 215 injectors, so they will make more power than the 96-97 12v automatics. But even with a modified AFC and tweaked rack travel with 17* of timing, I think that anything over 400hp to the wheels is a stretch. I think that 450hp is obtainable with the 215 pump and stock injectors, but the 215 pump has different plungers ie: different plunger heads and a different cut helix.
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post #3 of 11 (permalink) Old 03-05-2006, 08:22 PM
smoke em if you got em!
 
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Quote:
The 98 12v automatics have 215 injectors, so they will make more power than the 96-97 12v automatics
So, what yor saying, is.. the 98 auto came with 215 injectors, but still had the 180 pump?, Now Im messed up!I know all the hoopla on the pumps for diferent years, and auto VS stick, but this confuses me!:shrug:

SOLD!!!!!!!97 12-valve extended cab 4x4 Goerend bros triple disc TC and tranny, bhaf, 180pump now with afc arm ground 3000gsk ,tst magic switch, #100homeground plate, 5" stacks and 370s timming advanced to 17* hx-35 14cm ,genos cup smoothy for added HP! 33s ,Durabaked rockers and flares leather interior,ranchhand front bumper, homeade rear bumper,rear airbags.
For any and All transmission needs, call Dave at Goerend transmission INC, at #1-563-778-2719, tell them Shawn sent yah!:HappyMugs

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post #4 of 11 (permalink) Old 03-05-2006, 08:51 PM
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you shouldnt really have any problem running 370s without marine pistons just run the thinnest washer then it puts most of the spray in the bowl

1995 Ram 2500 12v NV4500 4x4, 5" ss straight piped , ICEBOX, #10 place, 215 injectors, 4.5gsk, afc full forward, cranked starwheel, autometer boost/pyro, jacobs exhaust brake, 60lb springs, boost elbow, KDP tabbed, HID's, DT Profab +1/2" control arms, silencer ring MIA, air horns
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post #5 of 11 (permalink) Old 03-05-2006, 11:04 PM
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Shawn the only difference between the 98 12v automatics and the 96-97 12v automaics are the injectors, otherwise they have the same pump internals. I'm not saying that the 370's are not worth buying, but for my money I would rather send in a set of stock injectors to Dynomite Diesel and have them honed for about the same cost. If you run the .020 washers with less than 19* of timing the spray pattern shouldn't walk out of the piston bowl too much.
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post #6 of 11 (permalink) Old 03-06-2006, 01:45 AM
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Quote:
Originally Posted by AsTroSS
Is my weakest link small stock injectors or do i need fuel pump tuning.

I think with #10 it have to make lot of smoke.
i think the first weak link would be the delivery valves, if you want alot of fuel go with the laser cut dv's:Thumbup:

1997 f-250 auto, 4x4, 132,000,crewcab,remote start,relocated batteries, beans custom stage II's, beans custom 6 pos. chip, beans headstuds, 2002 intake plentums, 2002 HPOP, custom cold air intake, dual 6-in stacks, 4-in lift, 35-in MTR's, auto meter phantom gauges, (3rd) monsterbox tranny, billet input shaft, triple disk TQ, 4:10 Limited slip, snow performance water/meth injection. block painted sonic blue pearl
HP= 388 TQ= 732
1/4 mile= 14.4 @ 96mph with dp tuner 6 position chip
bigger injectors and fuel to come:
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post #7 of 11 (permalink) Old 03-06-2006, 04:16 PM
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The 800hp marked has been achieved twice with 181 delivery valves, but the laser cut delivery valves will allow more pressurized fuel into the lines before the injection cycle ends. I don't think your going to gain the extra 50hp from just delivery valves without allowing more rack travel. It doesn't always matter how much fuel the pump can push, the injectors are still the bottleneck in the injection system.
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post #8 of 11 (permalink) Old 03-06-2006, 06:22 PM Thread Starter
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Do you guys hava a Bosch part number for 191 delivery valves?

I think, if I ask from local Bosch dealer 191 Dv, they think i am grazy, they need long bosch part numbers.

Project T-25 : 1998 Cummins 12V Dodge Ram 2500,Quad-Cab, 4WD, automatic

16 cm turbo housing (without wastgate),boost 40psi, #10 fuel plate,4,1:0 rear (same in front) , 4 inch exhaust, ATS ex.manifold, sport model front grill and pumpers, Tuff Country 5'' lift kit and H2 weels with 35'' tires
My best so far 16.0@87 mph
My target : 600+ hp and less than 13 @1/4
I save money for : DTT billet tranny

1994 Cummins 12V Dodge Ram 3500, Dump truck, automatic
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post #9 of 11 (permalink) Old 03-06-2006, 10:17 PM
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don't get 191 DV's... for a little more money, you can get the 370 injectors... you'll make a LOT more power, fuel mileage should go up, and there's no problem running them on the stock pistons.
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post #10 of 11 (permalink) Old 04-22-2006, 12:05 PM Thread Starter
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Help my identify 191 delivery valve part number!




# .....8 552 191 :shrug:

can it be : 0 158 552 191 ?

Project T-25 : 1998 Cummins 12V Dodge Ram 2500,Quad-Cab, 4WD, automatic

16 cm turbo housing (without wastgate),boost 40psi, #10 fuel plate,4,1:0 rear (same in front) , 4 inch exhaust, ATS ex.manifold, sport model front grill and pumpers, Tuff Country 5'' lift kit and H2 weels with 35'' tires
My best so far 16.0@87 mph
My target : 600+ hp and less than 13 @1/4
I save money for : DTT billet tranny

1994 Cummins 12V Dodge Ram 3500, Dump truck, automatic
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