fuel system questions...
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fuel system questions...

  1. #1
    SDBA #819 vdrivegrimes's Avatar
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    Default fuel system questions...

    engine is not complete but its a 496 with 12.5-1 using merlin iron heads 345cc runners, dart intake w/fogger and a 1050cfm QFT 4150 carb. cam will be a custom grind bullet, solid roller.

    1st question...
    will my aeromotive a1000 pump be enough, and should i dead head the pump or run a return?

    2nd question...
    will my a1000 be big enough to supply fuel to engine and fogger or should i run a seperate 3gal tank and pump just for the nitrous?

    im open to opinions and suggestions.

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  3. #2
    Senior Member Flat BROKE 612's Avatar
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    Quote Originally Posted by vdrivegrimes View Post
    engine is not complete but its a 496 with 12.5-1 using merlin iron heads 345cc runners, dart intake w/fogger and a 1050cfm QFT 4150 carb. cam will be a custom grind bullet, solid roller.

    1st question...
    will my aeromotive a1000 pump be enough, and should i dead head the pump or run a return?

    2nd question...
    will my a1000 be big enough to supply fuel to engine and fogger or should i run a seperate 3gal tank and pump just for the nitrous?

    im open to opinions and suggestions.
    I don't really have any info about the pump capacity, but the one thought that popped into my head right away was that if you run a dedicated pump and tank it's just more things to forget/break...be a real shame to hit the spray and forget to turn on the pump or have the pump/switch/relay anything fail and spray it dry... I suppose you could have the same problem with one pump but it sure would be good timing to have the pump fail and hit the spray while running the bowls empty....
    If you love someone set them free, If they come back with the cops...RUN!!!

  4. #3
    Senior Member ap67et10's Avatar
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    The A1000 will be more than enough for that engine, but needs to be run as a return fuel system. Whether you will need to run a second pump for nitrous primarily has to do with how much nitrous you plan to run. So how much are you planning to feed this thing?

    Andrew

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    Senior Member bp298's Avatar
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    Quote Originally Posted by Flat BROKE 612 View Post
    I don't really have any info about the pump capacity, but the one thought that popped into my head right away was that if you run a dedicated pump and tank it's just more things to forget/break...be a real shame to hit the spray and forget to turn on the pump or have the pump/switch/relay anything fail and spray it dry... I suppose you could have the same problem with one pump but it sure would be good timing to have the pump fail and hit the spray while running the bowls empty....
    system should be wired such that the solonoids won't open (no power) unless the pump is running. good thing about running a seperate pump is the ability to set a dedicated pressure regulator for that system.

  6. #5
    gn7
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    You can run two regulators, one for the carb and one for the fogger if the pump can keep up. No matter how you plumb it or how many pumps you use, I wouldn't trust just a switch being "on" to the fogger pump to enable the fogger, I would put a fuel pressure switch inline with the NOS solenoid power. If for some reason you don't have sufficient pressure for the fogger, the NOS solenoid can't open.
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  7. #6
    SDBA #819 vdrivegrimes's Avatar
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    thanks for all the good info. im planning on a 250 shot

  8. #7
    Senior Member ap67et10's Avatar
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    Quote Originally Posted by vdrivegrimes View Post
    thanks for all the good info. im planning on a 250 shot

    you'll be just fine on that pump if you want to go with one.


    Andrew

  9. #8
    Senior Member bp298's Avatar
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    Quote Originally Posted by gn7 View Post
    You can run two regulators, one for the carb and one for the fogger if the pump can keep up. No matter how you plumb it or how many pumps you use, I wouldn't trust just a switch being "on" to the fogger pump to enable the fogger, I would put a fuel pressure switch inline with the NOS solenoid power. If for some reason you don't have sufficient pressure for the fogger, the NOS solenoid can't open.
    that's pretty hi tech there gn.. almost sounds like more shit to fail.... mine always worked fine without it, but i only ran a small shot...

  10. #9
    SDBA #819 vdrivegrimes's Avatar
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    Quote Originally Posted by gn7 View Post
    You can run two regulators, one for the carb and one for the fogger if the pump can keep up. No matter how you plumb it or how many pumps you use, I wouldn't trust just a switch being "on" to the fogger pump to enable the fogger, I would put a fuel pressure switch inline with the NOS solenoid power. If for some reason you don't have sufficient pressure for the fogger, the NOS solenoid can't open.
    this wat i desided to do, you cant never be to careful. since i have everything to do i figured it would be a wise thing to do

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