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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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  #1  
Old 08-18-2009, 07:39 PM
dewinkle03's Avatar
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Default HX40 on 94 cummins?

i was wandering if i could put a HX40 on my 94 cummins auto. the tranny is not stock and has 100 horse injectors and #6 fuel plate. will everything hold up with the HX40 turbo?
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  #2  
Old 08-18-2009, 07:44 PM
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hx40 isnt going to do much but yes if you have an hx40 DP then it should bolt up. Try not to surge an HX40 they like to break shafts.

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  #3  
Old 08-18-2009, 08:19 PM
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i got the 40 an it does really good

skyjacked84's Sig:06' Cummins 2500 -Banks CAI, Monster Ram Intake, Techni Cooler - Airdog150 - 4" Exhaust - some Suncoast trans parts - Crazy Larry tune. 405hp & 775tq
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  #4  
Old 08-18-2009, 09:41 PM
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Originally Posted by xzaq103 View Post
hx40 isnt going to do much but yes if you have an hx40 DP then it should bolt up. Try not to surge an HX40 they like to break shafts.
wat r u referring to when u say surge?

---AutoMerged DoublePost---

Originally Posted by skyjacked84 View Post
i got the 40 an it does really good
how much boost do u run with urs?

Last edited by dewinkle03; 08-18-2009 at 09:41 PM.. Reason: Automerged Doublepost
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  #5  
Old 08-18-2009, 10:22 PM
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35 with my egt 1400 i got 90hp injectors banks twin ram intake #6 4" turbo back all on a stock rebuilt tranny

Last edited by skyjacked84; 08-18-2009 at 10:40 PM..
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  #6  
Old 08-19-2009, 12:19 AM
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by surge he means don't put your foot in the radiator and then lift suddenly... it can cause the wastegate to make a "chatter" sound causes major pressure differences on each end of the shaft (exh and intake) when it chatters it causes the shaft to twist... think of twisting a crayon. it's pretty tough for what it is; but enough force with snap it and it happens with out warning. i've heard phat shafts are pretty resiliant. if you want to stick with the HX-40 get a boost elbow that controls the wastegate. should level out the boost input to the wastegate actuator

tower_ofpower's Sig:89' W250, full fuel 1 1/2 turns, M&H M3 fuel pin and timing spacer, 366 spring, air dog 150, 6" lift, shocks and dual stabilizer, custom track bar. Soon to be and ordered:transmission "shift reprogram" kit, Mag Hytec double deep trans pan, PDR super S300, HX 40 DP, ATS 3 piece exhaust manifold, DDP stg1 injectors, Fluidamper, oil filter relocation kit, autometer tach, boost, pyro, trans temp gauges.
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  #7  
Old 08-19-2009, 10:43 AM
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well if he is only making 35 with his HX40 then im not goin to gain a whole lot cause i can build 30 with my HX35. Will it handle an HX55?
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  #8  
Old 08-19-2009, 11:49 AM
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The surge is not the wastegate as non-gated housing turbos can Bark or surge as well. Caused when you reduce the exhaust input to the turbo suddenly and the turbo slows down with high pressure on the compressor side. This pressure starts to back flow through the compressor and causes the "bark" sound. This sudden pressure change stresses the turbine and compressor wheels as well as the shafts and can cause them to break in the HX40. The HX40 has smaller shafts with big wheels and is not a strong turbo, but relatively cheap.

I bark my S300 between shifts if not careful.

Lil Dog's Sig:97 Dodge CTD 2500 4X4 LWB CC SLT Laramie 5 spd LSD 3.55. Goodies from: South Bend Clutch, PEAK, PDR, Scotty, DieselPowerProducts, Solid Steel, Roda Deaco Positive Air Shutoff. Espar D5WSC heater. B-Quiet sound deadening inside. Dyno 08-2009/ 405 RWHP/1100 Ft-lbs

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  #9  
Old 08-19-2009, 04:54 PM
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Originally Posted by Lil Dog View Post
The HX40 has smaller shafts with big wheels and is not a strong turbo
I can do it on mine as well when lockup hits in OD.

There just weak and I think your money could be better spent on an s300....
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  #10  
Old 08-20-2009, 01:15 AM
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i barked my hx35/40 hybrid more than a dozen times on my truck shifting durring hard fuel, since my truck is a 5 speed the turbo is currently on an auto and does the same thing, they are weeker shafts but i guess i got luckuy

94cummins12v's Sig:sold 96 f350 CCLB, p-pumped 12v cummins,506hp-1089tq
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