need some help building my fuel system
08-10-11, 08:29 PM
#1
need some help building my fuel system
Alright I happened to get 25ft of -6an stainless line for a price I could not refuse. Im hoping I can use it, if I need to sell it then I will, but it would be nice to keep it and not have to deal with that.
My goal is 400 rwhp.. Likely with alky or water injection. I thought I was told somewhere that 6an is good for approx 375 hp, but my goal is definitely 400...
Am I taking to big of a risk pushing the hose that much for the horsepower i am expecting?
What single fuel pump will be good and reliable to supply me with constant pressure and reliablility?
Now lets the general suggestions is to not use the single pump, and to go dual pump. What is a good aftermarket twin pump setup to use?
I figur I have three options
1) use one pump, all -6an braided hose to fpr and hope its good for 400rwhp (not sure i like this idea)
2) single pump, run a (1) -8an to (2) -6an Y pipe right from the pump. then before the fpr run another (2) 6an to (1) -8an Y split. Then from the frp run -8an braided hose to the fuel rails.
3) run two pumps, both -6an right from the pump to the fpr. Again at the frp split the two -6an into one -8an into the frp. Then again run -8an from the FPR to the rails.
With all 3 options I will be running a -6an return fuel line.
I personally like option three the best... I always fear of a failing fuel pump killing my motor, and well, with two, it may save me a motor down the road if a pump fails.
Correct me if my mentality of this is all wrong. There is always option 4 of running -8an all the way, but I dont think i need to, and considering I already have multiple new 6an fittings and 25 feet of hose, I want to use what I already have.
Cost is always important too, , but not neccasarily a deal braker. I will get what I need, but do not want to go overkill and waste cash.
So what does everyone think? Any people with a lot of fuel experience? Keep in mind I will likely be running a water or meth injection with all of this, so it may help with not need as large of a fuel line.
My goal is 400 rwhp.. Likely with alky or water injection. I thought I was told somewhere that 6an is good for approx 375 hp, but my goal is definitely 400...
Am I taking to big of a risk pushing the hose that much for the horsepower i am expecting?
What single fuel pump will be good and reliable to supply me with constant pressure and reliablility?
Now lets the general suggestions is to not use the single pump, and to go dual pump. What is a good aftermarket twin pump setup to use?
I figur I have three options
1) use one pump, all -6an braided hose to fpr and hope its good for 400rwhp (not sure i like this idea)
2) single pump, run a (1) -8an to (2) -6an Y pipe right from the pump. then before the fpr run another (2) 6an to (1) -8an Y split. Then from the frp run -8an braided hose to the fuel rails.
3) run two pumps, both -6an right from the pump to the fpr. Again at the frp split the two -6an into one -8an into the frp. Then again run -8an from the FPR to the rails.
With all 3 options I will be running a -6an return fuel line.
I personally like option three the best... I always fear of a failing fuel pump killing my motor, and well, with two, it may save me a motor down the road if a pump fails.
Correct me if my mentality of this is all wrong. There is always option 4 of running -8an all the way, but I dont think i need to, and considering I already have multiple new 6an fittings and 25 feet of hose, I want to use what I already have.
Cost is always important too, , but not neccasarily a deal braker. I will get what I need, but do not want to go overkill and waste cash.
So what does everyone think? Any people with a lot of fuel experience? Keep in mind I will likely be running a water or meth injection with all of this, so it may help with not need as large of a fuel line.
08-10-11, 08:48 PM
#2
I am also thinking, with dual fuel pumps, I imagine I could set it to have one pump run until lets say 4000rpm, then at 4000 rpm have the second pump come online to feed my motor at high rpm where fuel is demanding. Bahhh Im just not very experienced with fuel, hoping I can get some insight as to how i should set this up. Really digging the dual pump idea, but dont know what model or models of pump(s) to buy, and how I should run/split my lines :S
Thanks in advance to all those that help
Thanks in advance to all those that help
08-11-11, 01:55 AM
#3
Rotorhead
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Fuel lines flow differently depending on whether they are under suction or pressure. The -6 AN line is generally good for 500hp pressure (EFI) or 335hp suction (carb), although this is just a basic rule that varies with conditions.
Aeromotive has a power planner section so you can see some basic fuel systems for a given horsepower range:
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
That will cause a surge.
Aeromotive has a power planner section so you can see some basic fuel systems for a given horsepower range:
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
That will cause a surge.
08-11-11, 07:57 AM
#4
Right on, thankyou!
Fuel lines flow differently depending on whether they are under suction or pressure. The -6 AN line is generally good for 500hp pressure (EFI) or 335hp suction (carb), although this is just a basic rule that varies with conditions.
Aeromotive has a power planner section so you can see some basic fuel systems for a given horsepower range:
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
That will cause a surge.
Aeromotive has a power planner section so you can see some basic fuel systems for a given horsepower range:
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
That will cause a surge.
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