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Boost Referencing Fuel Pump

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Old Sep 26, 2003 | 02:25 PM
  #1  
CamaroFreak406's Avatar
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From: Stevens Point Wisconsin
Car: 1991 Formula
Engine: 350 firebreathing inches of Small Block Chevrolet
Transmission: A 700R4 that has trouble handling the formentioned 350.
Boost Referencing Fuel Pump

OK I am looking into cutting as much cost off a junkyard turbo install as possible. But one of the really big problems that costs money is the fuel delivery.

In the past I have always been told that you have to buy a high volume Electric Fuel pump and a Boost senstive Fuel pressure regulator (Both of which aren't cheap). But I happened to stumble across a members website www.ttZ28.com (sub heading fuel suplly) which I found very informative.

But now my question Is there a limit on the amount of boost you can run will boost referencing your stock mechanical fuel pump? And how exactly do you hook it up (is it as easy as just running a hose from the bonnet to the atmospheric vent on the pump?)

Thanks, Garrett

Also does anyone know where an adjustable exterenal wastegate can be found cheap, or an alternative to running one.
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Old Sep 26, 2003 | 05:58 PM
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bEtUr4dRustang's Avatar
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an alternative to running the external wastegate is to find a turbo with an internal one. you can setup a controlled bleed on the manifold pressure line that feeds it and adjust boost in that manner. T3s from Turbo regals and maybe the Tbird T3s have the internal wastegates.
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Old Sep 26, 2003 | 07:23 PM
  #3  
CamaroFreak406's Avatar
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From: Stevens Point Wisconsin
Car: 1991 Formula
Engine: 350 firebreathing inches of Small Block Chevrolet
Transmission: A 700R4 that has trouble handling the formentioned 350.
Thanks for the input, But it is easier for me to use a Junkyard Diesel turbo than to find a functial internal wastegate T3. If there were more junkyards around here with T-type regals or Turbocoupes I would love to use T3's but I can't find any and ebay's are all to expensive or junk.

But anyways back to the Boost referencing Fuel Pump. Will it work?

Thanks, Garrett
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Old Sep 28, 2003 | 01:41 AM
  #4  
Cronic3rd's Avatar
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From: Sharonville OH
Car: 98 Z28 vert
Engine: LS1
Transmission: automagic
Axle/Gears: 2.73 - boo racing yay MPG
um try e-mailing TTz28 - his addy is on the page.
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Old Sep 28, 2003 | 02:18 PM
  #5  
sleepybu's Avatar
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From: BC Canada
Car: 81Malibu
Engine: SBC 355
Transmission: TH400



all the info you need is here

http://www.toohighpsi.com/index.htm

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Old Sep 28, 2003 | 07:24 PM
  #6  
89ProchargedROC's Avatar
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From: chi-town
is this a carb or efi setup
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Old Sep 28, 2003 | 09:51 PM
  #7  
CamaroFreak406's Avatar
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From: Stevens Point Wisconsin
Car: 1991 Formula
Engine: 350 firebreathing inches of Small Block Chevrolet
Transmission: A 700R4 that has trouble handling the formentioned 350.
The set-up I am talking about is a carb set-up. But from what I have read you just have run a hose from the bonnet to the fuel pump atmospheric vent so that with each pound of boost you get one more pond of fuel pressure.

I just wanted to know if it's just that easy.


Thanks, Garrett
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Old Sep 29, 2003 | 12:39 AM
  #8  
sleepybu's Avatar
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From: BC Canada
Car: 81Malibu
Engine: SBC 355
Transmission: TH400
jet up ALOT then dack it off
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Old Sep 29, 2003 | 02:16 AM
  #9  
BOTLFED's Avatar
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From: Saint John NB Canada
Originally posted by CamaroFreak406
The set-up I am talking about is a carb set-up. But from what I have read you just have run a hose from the bonnet to the fuel pump atmospheric vent so that with each pound of boost you get one more pond of fuel pressure.

I just wanted to know if it's just that easy.
Yeap, it's that simple.. That fuel pump should put out as much fuel pressure as you tell it to, but the flow ratings go down as the fuel pressure goes up.. We all know at 16psi of boost (24psi of fuel pressure) it will feed a mid 10 second Capri, so you can take it from there..

Cheers,
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