Thread:

fuel system questions...

Originally Posted by vdrivegrimes

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....

Originally Posted by Flat BROKE 612

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.

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.

Originally Posted by gn7

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...