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Top 2GNT Technical Turbo/Nitrous Tech topic #53588
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Subject: "turbo kit with stock GST pump" Previous topic | Next topic
420aturboAug-07-03 10:37 AM
Member since Apr 08th 2002
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#53588, "turbo kit with stock GST pump"


          

I have a NER stage 1 kit, Vortech 12-1 FMU, and stock injectors. Can I boost 5 psi safely with a stock GST intank pump only?

Built 420a
NER turbo kit T3/T04s ball bearing
AFX UDP
Crane 0014 cams

  
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Replies to this topic
RE: turbo kit with stock GST pump, neovb, Aug-07-03 12:09 PM, #1
RE: turbo kit with stock GST pump, Administratoradmin2, Aug-07-03 12:31 PM, #2
      RE: turbo kit with stock GST pump, turbo8u, Aug-07-03 01:04 PM, #3
           RE: turbo kit with stock GST pump, Uberingram, Aug-07-03 01:15 PM, #4
                RE: turbo kit with stock GST pump, 420aturbo, Aug-07-03 02:33 PM, #5
                     RE: turbo kit with stock GST pump, Global Ruler Of All ThingsDarkOne, Aug-07-03 02:50 PM, #6

neovbAug-07-03 12:09 PM
Old School 2GNTer
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#53592, "RE: turbo kit with stock GST pump"
In response to Reply # 0

          

I think the GST pump only flows 190lph, I dont think thats enough for our cars.

NeoVB
2005 Subaru Impreza 2.5RS
1997 Mitsubishi Eclipse GS TURBO
1995 Mitsubishi Galant ES DOHC TURBO
1991 Eagle Talon TSI AWD

  
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Administratoradmin2Aug-07-03 12:31 PM
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#53593, "RE: turbo kit with stock GST pump"
In response to Reply # 1

          

This is a BAD IDEA. Why do you think they upgrade their pumps? because they don't flow well at higher pressures. for 5psi on stock injectors, you're running nearly 100psi of fuel pressure. A GST pump can't do that; you might as well leave your stocker in and go ahead and ruin your motor.

_________________________________________
I'm the guy that bans you for breaking the rules. I am the troll killer. I am the law here.

  
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turbo8uAug-07-03 01:04 PM
Member since Jun 15th 2003
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#53595, "RE: turbo kit with stock GST pump"
In response to Reply # 2



          

100 psi on 5 pounds? whoa there, i dunno about that

can we say richy rich?

  
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UberingramAug-07-03 01:15 PM
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#53596, "RE: turbo kit with stock GST pump"
In response to Reply # 3

          

with that fmu setup

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~Chris
03 SRT-4

  
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420aturboAug-07-03 02:33 PM
Member since Apr 08th 2002
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#53599, "RE: turbo kit with stock GST pump"
In response to Reply # 4

          

Are you sure about the 100 psi at just 5 psi of boost? Elaborate on this. Can I use a Walbro 255 LPH (not hi-psi) pump?

Built 420a
NER turbo kit T3/T04s ball bearing
AFX UDP
Crane 0014 cams

  
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Global Ruler Of All ThingsDarkOneAug-07-03 02:50 PM
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#53602, "RE: turbo kit with stock GST pump"
In response to Reply # 5



          

Base fuel pressure of around 40psi, 12:1 riser. 40 + 12 + 12 + 12 + 12 + 12 = 100psi.

Even the 225LPH Walbros can be a bit small at those fuel pressures. That is why HRC supplies a big inline pump...

And yes, when i was stock motor and stock injector, i'd see over 100psi of fuel pressure at 5-6psi of boost. My gauge only went to 100psi, but the needle would move beyond that when i stepped up to 8-9psi and a big inline to augment my Walbro.

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'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



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