The bigger injector, less fuel psi theory?

[Coupe50h]

Originally Posted by ~The Jester~

"Was that pass better because of the 42 psi, or did I just get ahold of the track better?"

MOST of the time at the track, this is not feezable, time doesn't permit. But when/if you can, this is the way to go for testing.

Just my $.02!

And yes, Jeff and Andy are the BOSS! LOL

Thats why I said "I was looking at mph", the 60' really doesnt affect mph unless you really bogg or spin halfway down the track.

The "x" amount of fuel to make "Y" amount of power can be a good way too look at it, volume that is.
But pressure seems to be a different story, Look at it this way, A 700 hp turbo stang would need some serious fuel volume right? would a 700 hp naturally aspirated bigblock need the same volume, even though it is not forced inducted?
This thread has alot of usefull replies......so thanx alot.....

[~The Jester~]

Originally Posted by Coupe50h

The "x" amount of fuel to make "Y" amount of power can be a good way too look at it, volume that is.
But pressure seems to be a different story, Look at it this way, A 700 hp turbo stang would need some serious fuel volume right? would a 700 hp naturally aspirated bigblock need the same volume, even though it is not forced inducted?
This thread has alot of usefull replies......so thanx alot.....

YEP! It sure would! There is only "so much" kinetic energy stored in that one gallon of fuel. So in order to realize the 700 horse, be it N/A, or blown, turboed, blown AND turboed, Nitroused/Turboed/Blown whatever. To make 700 Horse, you need "X" amount of fuel, and it doesn't matter what pressure it's at. But you have to give the engine what it NEEDS. At this point it's all about the volume. Where fuel PRESSURE comes into play is the injectors, carb floats, friction loss in the fuel line, friction loss in the pump, restriction in the filter(s) etc etc. It's all physics.

I don't mean to go off on a rant, but it's looks like I'm gonna! LMAO

There was a guy at a local car show last summer that had a Dodge Dakota with TWO blowers on it. Looked really nice, and he made it a point to drive past us every few hours to show off his "horsepower". He had a sign in front of his "pit" spot stating that the truck made 1,300 HP. So, being the vindictive person I am, took it upon myself and got a collection of ching ($$$) from other participants to put this truck on the portable dyno that also happened to be at the show.

I walked over to this guys pit, and flat out told him that there was NOOOO way in hell that little Mopar was making 1300 Horse. Conversation went something like this:

"Nice Truck!"
"Thanks!"
"1300 Horse is a little high though, don't you think?"
"Nope, engine builder said so."
"There's a dyno right over there, I have $100 in my pocket to pay for the dyno runs that says you won't make the number. And another $100 for YOU if you prove me wrong."
"You seem pretty sure of yourself, but I'm not gonna beat on my truck to prove you wrong."
"Brake specific fuel consumption."
"What the hell does that mean?"
"That means that you can't feed FOUR 450 CFM carbs with a -6 fuel line, and expect to make 1,300 horsepower. Guys I know ditch the -6 line when they get above 450 ponies."
"You obviously don't know what you're talking about."
"The dyno is right over there, I'M paying for it. Prove me wrong."
"I'm not gonna beat on my truck to prove YOU wrong."
"OK, no prob. I understand that your chicken, and in your mind your pretty sure it won't make the numbers. No prob at all, but quit "piping" us every hour, cuz we CAN make the numbers, and we're not afraid to prove it."
"What the hell do you drive?"
"580 horse Mustang."
"That's less than HALF of the horses I make!"
"Yes sir, it is. ACCORDING TO YOU. I want to see your truck on the dyno, I have a dyno sheet that PROVES my car made 580 horse, all you have is a sign."

BLAH BLAH BLAH, you get the idea. Bottom line is that there is no way in hell you can make 1,300 horsepower with a -6AN line. THIS is about volume, that's what I'm trying to teach you guys. One gallon of fuel will make "X" horsepower in a "perfect world". PERIOD. The laws of physics say so.

[~The Jester~]

Just some links for yinz guys to read when ya get a minute.

http://www.answers.com/topic/brake-s...el-consumption

http://www.carcraft.com/techarticles/986/

THIS is the one!
http://productengr.com/

Absolutely NOT trying to be a bonehead here, just passin along what I've learned.