Engine guru's/ fuel injectors
#11
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RBeyer... those are some nice heads. Will make great power with a blower especially with good port work!!! I figured that the 2.5 was a typo.
But I do have to agree with GPM on the fp. I run that much fp on my turbo alcohol car with 35-39lbs of boost.
But I do have to agree with GPM on the fp. I run that much fp on my turbo alcohol car with 35-39lbs of boost.
#12
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I have tried two different regulators and tested at the rail and the gauge same results. This is my concern I think we are at the end of these nozzles for this appliction as I think we are forcing fuel thru them.
Bob
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I run Fast EFI, I was told injectors are rated at 43.5 psi, you need roughly .5 lb per HP. Running high pressure would act like a bigger injector. There is a calculation for what you are doing. I believe you can find it on Kinsler Fuel Injection. Without knowing the duty cycle at top end there is no way of telling how close you are to static.
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Found this info on FAST's website. Looks like you need bigger injectors IMHO.
Supercharged v8 peak power:
55lb/hr = 660hp
60lb/hr = 720hp
65lb/hr = 780hp
83lb/hr = 996hp
This comes with this note:
NOTE: fuel injectors in and of themselves do nothing to produce power, so don’t choose a larger injector because of the peak HP rating of the injector –too large of an injector will only waste fuel and hurt your throttle response, much like overcarbureting a non-injected engine-. Select the right injector to support the power that your engine produces -you’ll never run out of fuel, and you’ll experience great throttle response, a smooth power curve, and good fuel economy.
Supercharged v8 peak power:
55lb/hr = 660hp
60lb/hr = 720hp
65lb/hr = 780hp
83lb/hr = 996hp
This comes with this note:
NOTE: fuel injectors in and of themselves do nothing to produce power, so don’t choose a larger injector because of the peak HP rating of the injector –too large of an injector will only waste fuel and hurt your throttle response, much like overcarbureting a non-injected engine-. Select the right injector to support the power that your engine produces -you’ll never run out of fuel, and you’ll experience great throttle response, a smooth power curve, and good fuel economy.
#17
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Found this info on FAST's website. Looks like you need bigger injectors IMHO.
Supercharged v8 peak power:
55lb/hr = 660hp
60lb/hr = 720hp
65lb/hr = 780hp
83lb/hr = 996hp
This comes with this note:
NOTE: fuel injectors in and of themselves do nothing to produce power, so don’t choose a larger injector because of the peak HP rating of the injector –too large of an injector will only waste fuel and hurt your throttle response, much like overcarbureting a non-injected engine-. Select the right injector to support the power that your engine produces -you’ll never run out of fuel, and you’ll experience great throttle response, a smooth power curve, and good fuel economy.
Supercharged v8 peak power:
55lb/hr = 660hp
60lb/hr = 720hp
65lb/hr = 780hp
83lb/hr = 996hp
This comes with this note:
NOTE: fuel injectors in and of themselves do nothing to produce power, so don’t choose a larger injector because of the peak HP rating of the injector –too large of an injector will only waste fuel and hurt your throttle response, much like overcarbureting a non-injected engine-. Select the right injector to support the power that your engine produces -you’ll never run out of fuel, and you’ll experience great throttle response, a smooth power curve, and good fuel economy.
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Like GPM stated, I think the base is 45psi to start. I run 48psi on my car as a base, but I also run alcohol and the fp boost ratio is 1:1. So with 30lbs of boost, I have almost 80psi. But mine is also a turbo, but boost is boost right?
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