1stGen.org

by **Ace** » Tue Jan 27, 2009 3:37 pm

Keeping an open mind and believing unsubstantiated claims are two different things. OK, I'm game. Let's break it down by the numbers. we'll assume 8ft of 1/2" line, running at 15psi, just for the sake of this illustration:

Fuel volume = what a pint? Probably less, but I'll give you the benefit of the doubt.

The fuel weighs somewhere around 1 lb.

15lbs /sq. in. pushing (or pulling) it, means it would take 16g's to overcome the force of the line pressure.

You still believe this is a major factor in fueling?

by **DTanklage** » Tue Jan 27, 2009 4:53 pm

keith ledger played the joker in the latest batman movie

one of his lines in that movie was:

"if you are really good at something, never do it for free"

he may have been 'the joker' and it may have 'only' been a movie but that line really hit home with me

gonna try to apply it more in real life

unsubcribing from this thread now

besides....i am done trying to help those that are not smart enough to help themselves

make it a great day : )

by **mprmn08** » Tue Jan 27, 2009 5:42 pm

in some way i do agree with the vehicle not having enough g's to stop fuel flow but, i am a drag racer, and if you run methanol (usually a hard leaving 10.0 or faster car) you move your fuel cell to the front because you will suck the lines dry on a launch. i know this for sure because my friend hit the wall head on with his car (fuel cell in front) and decided to move it to the back just in case it happened again and ended up worse of a situation. well the next time on the track (he runs 9.65's at about 137-140 mph) at about 35 feet out he went lean. he ran alcohol and his egt's shot up thats how he knows he went lean. he even has his lines running off the back of his fuel cell so fuel gets "pushed" into it but the fuel in the lines actually stopped enough to severly lean out his motor. once he moved it to the front again he had no problems nore did he before that. maybe its just that methanol is a thinner fuel, if you will, but i dont know. i believe it. just my 2 cents though

chris

by **Richie O** » Tue Jan 27, 2009 7:41 pm

Keith Ledger is dead. I don't wanna follow anything he said. The fuel thing makes sense. I know in fast stuff the tank is in front to help with fuel. On a launch the fuel in the line is heavier. Not sure how much it would affect my slow brick. We just don't see those hard starts.

by **PToombs** » Tue Jan 27, 2009 7:54 pm

Ace, I got an idea! Tap a vacuum guage into the suction line. The spec for a stock lift pump is no more than 3.75 inches of mercury. (3.75 in HG) Drive around, and see how much vacuum there is at various speeds and take offs. Then mat the sucker from a stop and see how much the vacuum drops. This should be a good indicator of the difference in how a launch affects fuel flow.

by **DoWhat?** » Wed Jan 28, 2009 7:26 am

move your pickup to the back side of the tank... problem solved

by **Ace** » Wed Jan 28, 2009 8:33 am

PToombs wrote:...Tap a vacuum guage into the suction line.

Pete, you are the one with the 5lb pressure drop, why don't you try it? :lol:

Oh, I see you also still have the 5/16" line, which seems contrary to the principle being debated here. Oh, well.

I don't know how many G's I've ever pulled from a standing start, but next time I decide to play with an accelerometer, I'll let you know.

I do know my fuel pressure never drops more than a 'lb. with the system I'm running. I also know one of the the problems with subjects like this is when somebody thinks apples and oranges look and taste the same. And they also think because they race a drag bike all their knowledge directly translates to Cummins diesels.

Wonder what movie cliche applies to that? :roll:

by **bgilbert** » Wed Jan 28, 2009 12:26 pm

Ace wrote:I'm pretty sure the stock 5/16" line is only really good for something less than around 300hp.

I made 450rwhp with stock fuel lines. I'm all for the upgrade of the supply side and pickup though.

by **PToombs** » Wed Jan 28, 2009 5:25 pm

Ace wrote: I also know one of the the problems with subjects like this is when somebody thinks apples and oranges look and taste the same. And they also think because they race a drag bike all their knowledge directly translates to Cummins diesels.

Now Ace, you know he has a 2nd gen cummins truck. He keeps posting pics and asking questions about it here on the 1st gen website.

Not that anybody gives a siht. :lol:

by **Ace** » Fri Jan 30, 2009 7:33 am

It's understandable tho, with all the obvious Hollyweird influence....

by **burnt_servo** » Sat Jan 31, 2009 3:40 pm

DTanklage wrote:keith ledger played the joker in the latest batman movie

Heath not keith

by **Richie O** » Sat Jan 31, 2009 4:27 pm

burnt_servo wrote:
DTanklage wrote:keith ledger played the joker in the latest batman movie

Heath not keith

He still is dead as a doornail.

by **peobryant** » Sat Jan 31, 2009 10:07 pm

Richie O wrote:
burnt_servo wrote:
DTanklage wrote:keith ledger played the joker in the latest batman movie

Heath not keith

He still is dead as a doornail.

So that's what happened to him. I haven't been seeing anything about him recently, now I know why.

In all honesty, I did like the guy, or his movies at least. No Pete,I'm not talking about Brokeback Mountain, I never saw that one. :lol:

by **Richie O** » Sat Jan 31, 2009 10:15 pm

He took to many happy pills and he won't be comming down to breakfast any time soon. :lol:

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