Upgraded 12valve - Dodge Cummins Diesel Forum
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post #1 of 16 (permalink) Old 02-26-2020, 10:10 PM Thread Starter
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Upgraded 12valve

I plan to do 90hp injectors, 60lb valve springs, and 4k gov springs. What do I need to do to assist with the fueling/air for my truck and what should I look at doing along with the upgrades to keep my motor as safe as possible? Thanks ahead of time. My truck is pretty much stock just afc housing turned up some which I plan to turn down with the upgrades and gauges coming with everything else.

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post #2 of 16 (permalink) Old 02-26-2020, 10:16 PM
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That should run good. I run the same setup on mine and it runs good and clean with plenty of power.

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #3 of 16 (permalink) Old 02-26-2020, 10:47 PM Thread Starter
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That should run good. I run the same setup on mine and it runs good and clean with plenty of power.
so you say it should be good to leave the turbo and intakes and all stock and it should run good with the upgrades I plan?
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post #4 of 16 (permalink) Old 02-26-2020, 11:02 PM
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Yes, tune the afc and the hx35 should be fine. I run a BHAF and honestly the stock airbox was probably fine, although the minder did get pulled down a little after a while

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #5 of 16 (permalink) Old 02-26-2020, 11:21 PM Thread Starter
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Yes, tune the afc and the hx35 should be fine. I run a BHAF and honestly the stock airbox was probably fine, although the minder did get pulled down a little after a while
yea I’ve already got the BHAF on my truck I was just worried about not enough air coming in and the egts being really high since the injectors would be pushing more fuel and the valve springs and gov springs will be allowing for more power. Thank you
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post #6 of 16 (permalink) Old 02-27-2020, 12:17 AM
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What is a "90hp injectors"?

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91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
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post #7 of 16 (permalink) Old 02-27-2020, 12:43 AM Thread Starter
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What is a "90hp injectors"?

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5X.012 SAC 145° 12-Valve Injector They are supposed to boost 90hp
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post #8 of 16 (permalink) Old 02-27-2020, 07:59 AM
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My egt’s run nice and cool with the same setup. Bump the timing up to 16-18

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #9 of 16 (permalink) Old 02-27-2020, 12:42 PM
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I would upgrade the turbo to a 57/65/14. It will do wonders with that setup

2012 cc dually 6speed, mini max, cooler delete, h&s intake horn, boost tube,5ich pipe,gdp big line kit Amsoil dealer since 2006
1996 12v 430000 miles. Built trans. 62mm hx 35 90hp injectors
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post #10 of 16 (permalink) Old 02-27-2020, 01:05 PM Thread Starter
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I would upgrade the turbo to a 57/65/14. It will do wonders with that setup
will
It run fine With the hx35 though until I can get a different turbo?
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post #11 of 16 (permalink) Old 02-27-2020, 03:22 PM
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Yes, I ran the same setup with hx35 and then switched to a 62/65/14 and it ran great.

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #12 of 16 (permalink) Old 02-27-2020, 04:12 PM
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Maybe I missed it but what is your trans situation? Auto? Manual?

1997 ECLB - 5" Diamond Eye straight pipe - ISSpro Trans temp/EGT/Boost - AFC Live - boost elbow - 5x14s - 17.5º Timing - Built trans - BHAF - ARP 425s - PSC SG852 - 315/75/16
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