Fuel pump, mechanical or electric?
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Fuel pump, mechanical or electric?
What are you guys opinions on this? Also I am replacing all the stock fuel lines should I go back with a bigger diameter, 3/8-1/2?
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: Fuel pump, mechanical or electric? (BlackRat)
unless you're building a Pro Stock, 3/8" lines are fine. Electric pumps are noisy as heck, nothing wrong with a mechanical pump...the mechanical pump will collapse the tank if the wrong gas cap is used....aks me how I know... :sad:......therefore, the mechanical pump can deliver the fuel to more than meet the engine's needs.
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: Fuel pump, mechanical or electric? (BlackRat)
Great thanks for the info. :thumbs: Are the stock lines 3/8's? They look smaller than that. :confused:
Wade
Wade
Melting Slicks
Joined: Feb 2002
Posts: 2,298
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From: Sodertalje/Sweden
Re: Fuel pump, mechanical or electric? (BlackRat)
Stock fuel lines is 3/8"..I was thinking of changing them my self to a bigger size,but if they can flow enough for the LS6/7 and L88s,then they are enough for me to.. :smash: :cheers: :cheers:
Race Director
Joined: Nov 2000
Posts: 11,872
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From: Waterloo ontario Canada
Re: Fuel pump, mechanical or electric? (BlackRat)
I am a fan of electric pumps mount under the tank. In both my cars I run 2 high pressure holley bumps, each feeding directly off it's own fitting at the bottom of the tank. I also run a 1/2 stainless fuel line up to the regulator when the 15 or 16 psi pressure is reduced to 6 psi.
I also have found rubber mounts sold by a local screw supplier that takes most of the noise away, not all but most. They bolt to the holley pumps and have a 1 inch vulcanized rubber flange.
I also have found rubber mounts sold by a local screw supplier that takes most of the noise away, not all but most. They bolt to the holley pumps and have a 1 inch vulcanized rubber flange.
Race Director
Joined: Feb 1999
Posts: 16,978
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From: In Dreams There Is Truth Ohio
Re: Fuel pump, mechanical or electric? (norvalwilhelm)
I also have found rubber mounts sold by a local screw supplier that takes most of the noise away, not all but most. They bolt to the holley pumps and have a 1 inch vulcanized rubber flange.
Race Director
Joined: Nov 2000
Posts: 11,872
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From: Waterloo ontario Canada
Re: Fuel pump, mechanical or electric? (GDaina)
I will post pictures tonight. I have them on my home computer.
It is 2 flanges seperated by 1 inch of rubber, like motor mounts designed to cut vibration in equipment.
See what you think of them.
It is 2 flanges seperated by 1 inch of rubber, like motor mounts designed to cut vibration in equipment.
See what you think of them.
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Burning Brakes
Joined: Feb 2004
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From: In the Beautiful Shenandoah Valley of VA
Re: Fuel pump, mechanical or electric? (GDaina)
Come, come, someone has to ask this. GDaina, how do you know that the mechanical pump will suck the tank in? (I just want to hear someone else aknowledge the kind of mistakes I make). :smash:
Steve
Steve
Race Director
Joined: Feb 1999
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From: In Dreams There Is Truth Ohio
Re: Fuel pump, mechanical or electric? (Steve's74)
Daaaaaaaaah....by putting on a non vented cap on a vented system...yup, that's what I did...i put a locking non vented cap on my 68...you should have heard that gawd awful noise when teh tank collapsed....
Le Mans Master
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From: Fort Worth TX
St. Jude Donor '06
Father & Son St. Jude Donor '09
Re: Fuel pump, mechanical or electric? (GDaina)
Daaaaaaaaah....by putting on a non vented cap on a vented system...yup, that's what I did...i put a locking non vented cap on my 68...you should have heard that gawd awful noise when teh tank collapsed....
Norval has dual lines each feeding a carb . . . Who woulda thunk it? :lol: :lol:
