Low boost problem....

TTR 21 · 11-03-2009, 02:01 AM

I would like to know what other people are seeing for boost out of a 160 pump with no plate and everything slid forward and wastgate clamped off. i am seeing a max of 29 psi which seems very low to me. my buddy with his 98 12v with the same mods is seeing 45. i do realize he has a 215 pump but my boost numbers seem very low.

__________________
04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

tdshepard · 11-03-2009, 10:11 AM

I can see 38 with my WHC1 holset with a 0 plate full forward. You could have a boost leak, a wategate flapper leak or an exhaust restriction........

__________________
1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

matterhorn · 11-03-2009, 11:19 AM

that does seem a bit low ... like was said before, I'd check for boost leaks, but I'd also check your fuel pressure and/or fuel lines for any air leaks ... how's your egt's? If they aren't getting too hot with that setup, then I'd say you aren't getting enough fuel ...

__________________
1997 DRW NV5600 4WD - Banks Cat-Back - Banks "Big Head" WG - Banks Fuel Plate - Center Force Clutch - BD Exhaust Brake w/Press Gauge - 2" Leveling kit - Banks Boost and EGT gauges - Firestone Assist Bags... Need 4" Turbo/back exhaust badly... trade?

TTR 21 · 11-03-2009, 12:15 PM

my egts wont really get that hot even if i push it hard. maybe 1000 degrees. i will have to check for fuel and boost leaks i guess becauseit seems like i should have gained alot more power from these mods as well. thanks.

__________________
04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

12vanthony · 11-03-2009, 12:16 PM

I see a max of about 40 with my 215 pump

__________________
'97 12v 5.spd...broke college student dreaming of more money and mods

TTR 21 · 11-03-2009, 09:40 PM

Where is a good place to start for checking boost and fuel leaks? Are there common problem areas or could it be anywhere?

__________________
04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

MX26 · 11-03-2009, 10:53 PM

For the boost leaks, the intercooler boots are usually the only places that leak. Inspect them closely, see if you can find any cuts or slices in them. As for the fuel leak, there are a few common leaks that can develop. One is the rubber hose behind the fuel filter.. It's a PITA to find though. Usually with a fuel leak, you'll find a drip. Let it idle on some concrete for an hour or so and see if anything turns up.

__________________
Trust me.... I'm a doctor.

94 12V NV4500 2wd - #100FF, BHAF, 3GSK, 4" FBD Straight
98 12V Quad Cab Shortbed SLT 4x4 - Auto with a "few" mods

khunter_2007 · 11-04-2009, 12:44 PM

i hit 52 with a banks #10 plate not sprayng then about 58 with nos with the stock h1c

__________________
94 cummins ,stock turbo ,370 marine injectors ,3k gov springs, laser cut dvs ,cam, bored .20 over ,lockup controler, tci stage 5 tc, suncoast valve body, 150 shot of nos, banks #8 plate slid, afc slid, suncoast extreme duty clutch kit, 6 in . stacks

straight_six · 11-04-2009, 06:59 PM

stock gsk?

__________________
06 Mega, SMARTY, DTT trans, MPI twins, FASS 150, DDP 90s, ARP, Opie bypass, MP-8, 643hp

94 2wd single cab...

rdix7991 · 11-04-2009, 07:06 PM

Quote:

Originally Posted by khunter_2007

i hit 52 with a banks #10 plate not sprayng then about 58 with nos with the stock h1c

Hey khunter, with all of those mods in your sig I would be jumpin all over a bigger turbo!

__________________
2000 Ext.C SB 4x4,AD 150, 150HP injectors, 62/14/71, Georend

khunter_2007 · 11-05-2009, 01:13 PM

yeah im waitin to get a lil $$$$$ in going to either put hx40 / ht3b or s362/s480 twin setup

__________________
94 cummins ,stock turbo ,370 marine injectors ,3k gov springs, laser cut dvs ,cam, bored .20 over ,lockup controler, tci stage 5 tc, suncoast valve body, 150 shot of nos, banks #8 plate slid, afc slid, suncoast extreme duty clutch kit, 6 in . stacks

TTR 21 · 11-06-2009, 02:29 PM

Well i did alot of playing around and testing yesterday to see if i could find any leaks. there was a small fuel leak to the pump after the filter but nothing that was terrible. fixed the leak and went to test everything out again. I was still only getting 29 psi of boost pressure. as i was out and about stilll testing and checking things i went to pass a guy on the highway and for the first time felt the TC lockup and away i went hitting 35 psi. with alot more messing around with i found out that you really have to push these older pickup go pedals alot harder than the newer ones. the whole time before i thought it was pinned it really wasn't and i just needed to add alittle more pressure to the pedal and she locks up everytime now as long as im going over 40 mph. i see a max of 39 psi at lockup and 34 psi with out. This sounds a bit better doesn't it!

__________________
04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

11-03-2009, 02:01 AM	#1 (permalink)
TTR 21 Diesel Freak Join Date: Feb 2008 Location: Moscow, ID Posts: 642 Thanks: 14 Thanked 12 Times in 11 Posts TTR 21's Truck Pics	Low boost problem.... I would like to know what other people are seeing for boost out of a 160 pump with no plate and everything slid forward and wastgate clamped off. i am seeing a max of 29 psi which seems very low to me. my buddy with his 98 12v with the same mods is seeing 45. i do realize he has a 215 pump but my boost numbers seem very low. __________________ 04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Dodge Cummins Diesel Forum Advertisement

11-03-2009, 10:11 AM	#2 (permalink)
tdshepard Cummins Fanatic Join Date: Dec 2008 Posts: 131 Thanks: 0 Thanked 9 Times in 9 Posts tdshepard's Truck Pics	I can see 38 with my WHC1 holset with a 0 plate full forward. You could have a boost leak, a wategate flapper leak or an exhaust restriction........ __________________ 1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

11-03-2009, 11:19 AM	#3 (permalink)
matterhorn Cummins Fan Join Date: Aug 2008 Posts: 32 Thanks: 0 Thanked 0 Times in 0 Posts matterhorn's Truck Pics	that does seem a bit low ... like was said before, I'd check for boost leaks, but I'd also check your fuel pressure and/or fuel lines for any air leaks ... how's your egt's? If they aren't getting too hot with that setup, then I'd say you aren't getting enough fuel ... __________________ 1997 DRW NV5600 4WD - Banks Cat-Back - Banks "Big Head" WG - Banks Fuel Plate - Center Force Clutch - BD Exhaust Brake w/Press Gauge - 2" Leveling kit - Banks Boost and EGT gauges - Firestone Assist Bags... Need 4" Turbo/back exhaust badly... trade?

11-03-2009, 12:15 PM	#4 (permalink)
TTR 21 Diesel Freak Join Date: Feb 2008 Location: Moscow, ID Posts: 642 Thanks: 14 Thanked 12 Times in 11 Posts TTR 21's Truck Pics	my egts wont really get that hot even if i push it hard. maybe 1000 degrees. i will have to check for fuel and boost leaks i guess becauseit seems like i should have gained alot more power from these mods as well. thanks. __________________ 04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

11-03-2009, 12:16 PM	#5 (permalink)
12vanthony Diesel Freak Join Date: Sep 2007 Location: Fowlerville, Michigan Posts: 530 Thanks: 6 Thanked 2 Times in 2 Posts 12vanthony's Truck Pics	I see a max of about 40 with my 215 pump __________________ '97 12v 5.spd...broke college student dreaming of more money and mods

11-03-2009, 09:40 PM	#6 (permalink)
TTR 21 Diesel Freak Join Date: Feb 2008 Location: Moscow, ID Posts: 642 Thanks: 14 Thanked 12 Times in 11 Posts TTR 21's Truck Pics	Where is a good place to start for checking boost and fuel leaks? Are there common problem areas or could it be anywhere? __________________ 04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!

11-03-2009, 10:53 PM	#7 (permalink)
MX26 Diesel Freak Join Date: Dec 2007 Location: Winnsboro, TX Posts: 501 Thanks: 1 Thanked 4 Times in 4 Posts MX26's Truck Pics	For the boost leaks, the intercooler boots are usually the only places that leak. Inspect them closely, see if you can find any cuts or slices in them. As for the fuel leak, there are a few common leaks that can develop. One is the rubber hose behind the fuel filter.. It's a PITA to find though. Usually with a fuel leak, you'll find a drip. Let it idle on some concrete for an hour or so and see if anything turns up. __________________ Trust me.... I'm a doctor. 94 12V NV4500 2wd - #100FF, BHAF, 3GSK, 4" FBD Straight 98 12V Quad Cab Shortbed SLT 4x4 - Auto with a "few" mods

11-04-2009, 12:44 PM	#8 (permalink)
khunter_2007 Cummins Fanatic Join Date: Aug 2008 Location: whiteman afb Posts: 138 Thanks: 1 Thanked 0 Times in 0 Posts khunter_2007's Truck Pics	i hit 52 with a banks #10 plate not sprayng then about 58 with nos with the stock h1c __________________ 94 cummins ,stock turbo ,370 marine injectors ,3k gov springs, laser cut dvs ,cam, bored .20 over ,lockup controler, tci stage 5 tc, suncoast valve body, 150 shot of nos, banks #8 plate slid, afc slid, suncoast extreme duty clutch kit, 6 in . stacks

11-04-2009, 06:59 PM	#9 (permalink)
straight_six Diesel Head Join Date: Jan 2007 Location: Rupert, Idaho : Logan, UT Posts: 1,434 Thanks: 20 Thanked 13 Times in 9 Posts straight_six's Truck Pics	stock gsk? __________________ 06 Mega, SMARTY, DTT trans, MPI twins, FASS 150, DDP 90s, ARP, Opie bypass, MP-8, 643hp 94 2wd single cab...

11-05-2009, 01:13 PM	#11 (permalink)
khunter_2007 Cummins Fanatic Join Date: Aug 2008 Location: whiteman afb Posts: 138 Thanks: 1 Thanked 0 Times in 0 Posts khunter_2007's Truck Pics	yeah im waitin to get a lil $$$$$ in going to either put hx40 / ht3b or s362/s480 twin setup __________________ 94 cummins ,stock turbo ,370 marine injectors ,3k gov springs, laser cut dvs ,cam, bored .20 over ,lockup controler, tci stage 5 tc, suncoast valve body, 150 shot of nos, banks #8 plate slid, afc slid, suncoast extreme duty clutch kit, 6 in . stacks

11-06-2009, 02:29 PM	#12 (permalink)
TTR 21 Diesel Freak Join Date: Feb 2008 Location: Moscow, ID Posts: 642 Thanks: 14 Thanked 12 Times in 11 Posts TTR 21's Truck Pics	Well i did alot of playing around and testing yesterday to see if i could find any leaks. there was a small fuel leak to the pump after the filter but nothing that was terrible. fixed the leak and went to test everything out again. I was still only getting 29 psi of boost pressure. as i was out and about stilll testing and checking things i went to pass a guy on the highway and for the first time felt the TC lockup and away i went hitting 35 psi. with alot more messing around with i found out that you really have to push these older pickup go pedals alot harder than the newer ones. the whole time before i thought it was pinned it really wasn't and i just needed to add alittle more pressure to the pedal and she locks up everytime now as long as im going over 40 mph. i see a max of 39 psi at lockup and 34 psi with out. This sounds a bit better doesn't it! __________________ 04.5, SB 3600 DD, 4 In. Straight Pipe W/ 6 In. Tip, AFE Stage 2 Intake, ATS Intake Manifold, Crazy Larry 2.4d, MP-8, Rail Cap, Airdog II, Snow Performance Stage 3 Water/Meth, Dipricol Gauges, 6 In. Lift, 37 In. Toyo MT's, 20 In. MKW's. 7/24/09 508 HP 1066 TQ!