Re: Fuel Pump, electric vs. mechanical
[Re: itali83]
#153658
11/19/08 10:14 PM
11/19/08 10:14 PM
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Anonymous
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Anonymous
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mild cam- go with a mechanical carter. 6 psi street pump
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Re: Fuel Pump, electric vs. mechanical
#153663
11/20/08 09:54 AM
11/20/08 09:54 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
mild cam- go with a mechanical carter. 6 psi street pump
no need for an electric
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Re: Fuel Pump, electric vs. mechanical
[Re: Mr.Yuck]
#153665
11/20/08 09:59 AM
11/20/08 09:59 AM
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Anonymous
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Anonymous
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use both....The electric will pressurize the line so that if the mechanical fails on HIGH revs, The electric will still send the fuel .
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Re: Fuel Pump, electric vs. mechanical
[Re: JimG]
#153667
11/20/08 10:29 AM
11/20/08 10:29 AM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
If you run an electric pump and a mechanical pump - in some cases (possibly all?) if the diaphragm ruptures in the mechanical pump, the electric pump can fill your crankcase with gasoline.
Just something to consider.
Ouch! that blows....literally. What ever you decide to run. Do yourself a favor and install a return line so you can have a bleed off back to the tank. It helps keep your fuel cooler and fights vapor lock. (NOTE: This is a simple bleed-off set-up for a dead-head system that is similar, but different than race style Return-Line-System)
It's super easy to do, and the only issue is that you need to check if you already have a return line equipted sending unit(if not modify yours or install a new one), install some flexible aluminum tubing to run from the front to the back of the car, and run a 3-nipple, metal fuel filter installed close to the carb and down stream from the regulator (available at any auto parts store- the 3rd nipple is already metered for the return)
Use high quality Fuel Injection hose and clamps at a minimum. High quality braided steel lines are required to pass tech at your local track.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Fuel Pump, electric vs. mechanical
[Re: JimG]
#153668
11/20/08 10:39 AM
11/20/08 10:39 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
If you run an electric pump and a mechanical pump - in some cases (possibly all?) if the diaphragm ruptures in the mechanical pump, the electric pump can fill your crankcase with gasoline.
Just something to consider.
I ran both on my Supercharged 440, although I only used the electric at the track or if I was "gettin' it"
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Re: Fuel Pump, electric vs. mechanical
[Re: Mr.Yuck]
#153669
11/20/08 11:10 AM
11/20/08 11:10 AM
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Joined: Jul 2007
Posts: 531 Virginia
JimG
mopar
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mopar
Joined: Jul 2007
Posts: 531
Virginia
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Quote:
I ran both on my Supercharged 440, although I only used the electric at the track or if I was "gettin' it"
Swingin 72:
I always guessed that a mechanical pump wouldn't do a good job of sucking through a static electric pump. You learn something new every day!
Jim
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Re: Fuel Pump, electric vs. mechanical
[Re: Mr.Yuck]
#153671
11/20/08 12:13 PM
11/20/08 12:13 PM
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Anonymous
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Anonymous
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All your doing by using both is pressurizing the line When the car is running, I have used both for 15+ years in my 1968 RAII Firebird and I will say NO problems ever....I have had several times that the mechanical pump could not keep up with the high revs that the car would put out since the installation of both the car has never failed.
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