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#1 Posted : Monday, 6 September 2004 8:21:26 PM(UTC)
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Hi all, does anyone have a VS workshop manual covering the electric fuel pump for a V8 VS (mine hasn't arrived yet).


What I need to know is the flow rate per hour and the pressure the pump can handle.


Cheers Dre

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#2 Posted : Monday, 6 September 2004 11:08:55 PM(UTC)
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Dre I think the flow rate is pretty high but I doubt you will get a pressure figure because the system works on a flow through principle, it has a bypass system where the rate of flow is much higher than needed and the excess is fed back to the surge tank
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#3 Posted : Monday, 6 September 2004 11:24:35 PM(UTC)
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Thanks for the info, but the GMH workshop manuals have figures for flow rate and pressure *just* for the pump alone, not when connected to the system.


Its at the end of the fuel pump section under "specifications"


Cheers Dre

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#4 Posted : Tuesday, 7 September 2004 1:28:59 AM(UTC)
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Hi Dre,


sounds like u rgetting well sussed.


I ditched the stocky (around 45 psi or so)


and got a Bosch hi flow pump, pumps way in excess of what i need.. lol


anyway adjustable fuel reg, and the afore mentioned bypass system plumbe

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#5 Posted : Tuesday, 7 September 2004 2:29:34 AM(UTC)
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Hi, the stocky your talking about, what kind of stock is it? VN or VS commodore external type?


I basically need to know what the minimum pressure and flow rate I need for WOT on a stock VS V8 so I can match up a fuel pump.


So far I can get

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#6 Posted : Tuesday, 7 September 2004 2:30:28 AM(UTC)
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Correction, that cheaper one I was talking about is only a 130L/hour pump...


Cheers Dre

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#7 Posted : Tuesday, 7 September 2004 2:35:06 AM(UTC)
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One last question :)


Were you having trouble with the stock pump not supplying enough fuel?


I would have thought a stock pump would have been able to pump a fair bit more than stock applications...


Cheers Dre

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#8 Posted : Tuesday, 7 September 2004 4:19:21 PM(UTC)
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So if you want/need a high flow/pressure pump, won't it be a waste unless you also have high flow injectors as well?


Now that gets EXPENSIVE!!!!

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#9 Posted : Tuesday, 7 September 2004 6:14:39 PM(UTC)
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A higher PSI will give u marginal increase in flow thru ur std injectors, but as u mentioned yeah hi flow is the way to go.


Dre,


I never put the stock pump on as the line sizes i used were all mis matched.


It's a VN external pump.


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#10 Posted : Tuesday, 7 September 2004 7:46:03 PM(UTC)
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Thanks for the info. I reckon a stocko pump would probably be ok then (300kpa). But we'll see, I might still get this high flow pump (more overhead for future expansion :)


Taz, I'm only trying to work out whether a stock pump from a VS would be su

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#11 Posted : Tuesday, 7 September 2004 8:06:26 PM(UTC)
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By all accounts its OK.


I just up graded mine, because I didnt want to re-do the job later on with, plumbing, etc that ran in hard to reach places.


Cheers


Ed

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#12 Posted : Tuesday, 7 September 2004 11:33:56 PM(UTC)
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Fair enough too!


I'm having a prick of a time trying to find somewhere "nice" to mount the pump, atm, it looks like I might have to run in down one of the chassis bars that span the chassis rails, not very tidy so looks like I'll be under

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#13 Posted : Wednesday, 8 September 2004 4:50:46 AM(UTC)
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Welcome to the world of underneath cars :-)
I get the feeling that a "lesser" pressure pump will fulfill your needs.
The HSV GTS 5.7 ltr 6 spd VR that we have at the moment appears to have the same pump as VN - ?


I think the major diffen

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#14 Posted : Wednesday, 8 September 2004 6:36:16 AM(UTC)
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Welcome to the world of underneath cars :-)
I get the feeling that a "lesser" pressure pump will fulfill your needs.
The HSV GTS 5.7 ltr 6 spd VR that we have at the moment appears to have the same pump as VN - ?


I think the major diffen

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#15 Posted : Wednesday, 8 September 2004 9:17:54 PM(UTC)
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Knock sensor is only required if the computer knows about it. If it doesn't it can still be programmed to have quite an advanced timing curve. With a knock though, you get even more agressive timing.


I'm going to be getting the thing running firs

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