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Which Electric pump to run through a mech pump?
#81478
06/29/08 08:05 AM
06/29/08 08:05 AM
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Joined: Jan 2003
Posts: 2,521 Richmond Va, KeislerTKO 60...
VanishPt
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Joined: Jan 2003
Posts: 2,521
Richmond Va, KeislerTKO 60...
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I am running out of ideas on how to make a mechanical fuel pump keep two Holley 600's full at WOT. I refuse to convert back to a electric pump full time but a helper pump might take care of the issue. I read the thread from June 16 about running an elctric through a mecahnical. Is there a particular brand that lends itself to this setup? I see Carter has a4600 seies rated at 8 PSI and a 4601 rated at 15 PSI. Would the 15 be too much pressure on a mechanical?
I would only want to use the electric 1% of the time
Last edited by VanishPt; 06/29/08 06:23 PM.
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Re: Which Electric pump to run through a mech pump?
[Re: mark7171]
#81482
06/29/08 10:34 AM
06/29/08 10:34 AM
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Anonymous
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Anonymous
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I'm in the process of rigging a system just like this into my 79 Magnum. I am running a fairly healthy SB.
I am feeding a self regulating 110 GPH Holley mechanical pump(P/N HLY-12-360-11)with a Holley "Blue" electric. I tore out all my factory fuel lines and replaced with 3/8" aluminum to the engine bay.
I have a regulator set at 5 PSI BEFORE the mechanical pump. All I want to do is supply a bit of positive pressure on the mechanical. I felt feeding the mechanical with the full 14 PSI that Holley says the Blue pump is capable of, might damage the diaphragm in the mechanical.
One question I have is, will the mechanical be able to "suck through" the electric in case the electric one fails?
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Re: Which Electric pump to run through a mech pump?
[Re: MoparforLife]
#81484
06/29/08 12:11 PM
06/29/08 12:11 PM
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Joined: Jan 2003
Posts: 2,521 Richmond Va, KeislerTKO 60...
VanishPt
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Richmond Va, KeislerTKO 60...
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this is with a 5 year old Carter Sreet /Strip pump running through a reg set at 7-1/4 lbs. It is a 3rd gear pull. The lean spike at 4:14 I "suspect" is a "gulp" of air from the bowls??
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Re: Which Electric pump to run through a mech pump?
[Re: VanishPt]
#81485
06/29/08 04:31 PM
06/29/08 04:31 PM
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Joined: Jun 2004
Posts: 3,319 Chicago Burbs
sthemi
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I`ve been running a Mallory comp pump ahead of the mechanical for 17 years. It has regualtor and I dial it back to 4-5 PSI before the mechanical pump. It will pull thru the electric pump if I choose to turn it off, however it runs a lot smoother with both running, and helps a ton with vapor lock and long term storage and start ups.. Car is a stock 440 with Carter Comp. series carb..
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