need advice on a fuel pump
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need advice on a fuel pump
i am converting my fuel injected 302 to carborated..and i have to replace the fuel pump because a fuel pressure regulator will not bring the psi down that much(i was told) but i wanted to know if an old mechanical fuel pump would work or if any one has any advice on this id appriciate it all..thanks
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From: Easton,Ks
Originally Posted by 87ford
i am converting my fuel injected 302 to carborated..and i have to replace the fuel pump because a fuel pressure regulator will not bring the psi down that much(i was told) but i wanted to know if an old mechanical fuel pump would work or if any one has any advice on this id appriciate it all..thanks
Last edited by subford; Oct 16, 2006 at 04:46 PM.
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so your saying the pump on the frame is the high pressure pump and if i take that off theirs still a pump in the tank? and that should put out enough psi for the carb? ... if so thats the best and only advice ive gotten
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From: Easton,Ks
Originally Posted by 87ford
so your saying the pump on the frame is the high pressure pump and if i take that off theirs still a pump in the tank?
Originally Posted by 87ford
and that should put out enough psi for the carb? ...
Also on the other hand you can buy adjustable fuel pressure regulators to adjust it to whatever you want while leaving the hi-pressure pump on the frame.
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that was my plan to begin with but i went the speed shop that i order all my parts from and he told me that their isnt a fuel pressure regulator that would bring the psi down that much. and if i can get one..from where? Jegs?
Post Fiend
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From: Topsfield, MA
You wouldn't want to run a high pressure pump than back it down. We're talking 40-45psi down to 3-5 psi. Just use a carb setup.
None of the EFI regulators I know of are that adjustable. They are ment to adjust between say 30-60psi for EFI applications (depends on which one).
None of the EFI regulators I know of are that adjustable. They are ment to adjust between say 30-60psi for EFI applications (depends on which one).
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From: Easton,Ks
Originally Posted by MustangGT221
You wouldn't want to run a high pressure pump than back it down. We're talking 40-45psi down to 3-5 psi. Just use a carb setup.
None of the EFI regulators I know of are that adjustable. They are ment to adjust between say 30-60psi for EFI applications (depends on which one).
None of the EFI regulators I know of are that adjustable. They are ment to adjust between say 30-60psi for EFI applications (depends on which one).
Here is their URL:
http://www.redlineweber.com/html/fue...regulators.htm
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Post Fiend
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From: Topsfield, MA
Wow, cool. But is it really right to have the high pressure pump operating like that? Wouldn't it cavitate? Since it's a return system, that pump doesn't have much of a load on it. If you cut the pressure off it'll be trying to pump 50+PSI but it can't and I wonder if it would have trouble with that.
I wonder if ditching the high pressure pump and just using the intake pump would be the right way to go...using a carb pressure regulator.
I wonder if ditching the high pressure pump and just using the intake pump would be the right way to go...using a carb pressure regulator.
Last edited by MustangGT221; Oct 18, 2006 at 04:17 PM.
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From: Easton,Ks
Originally Posted by MustangGT221
But is it really right to have the high pressure pump operating like that?
Originally Posted by MustangGT221
Wouldn’t it cavitate?
Originally Posted by MustangGT221
Since it's a return system, that pump doesn't have much of a load on it.
Originally Posted by MustangGT221
If you cut the pressure off it'll be trying to pump 50+PSI but it can't and I wonder if it would have trouble with that.
Originally Posted by MustangGT221
I wonder if ditching the high pressure pump and just using the intake pump would be the right way to go...using a carb pressure regulator.
Last edited by subford; Oct 18, 2006 at 05:41 PM.
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From: Easton,Ks
Originally Posted by MustangGT221
Why is that?
Do we know what pressure the intank pump would make at the carb? What if it's still like 10-15psi? Wouldn't it need to be regulated down to the 3-5 or whatever for the carb?
Do we know what pressure the intank pump would make at the carb? What if it's still like 10-15psi? Wouldn't it need to be regulated down to the 3-5 or whatever for the carb?