Competition Bigger fuel lines for 24v?

[Blacksdieselhp]

I was wandering whose selling the bigger fuel lines and banjos for 24v's. I am running a drag comp, Haisley #12 edm's and twins. I dynoed it Monday night and sucked the fuel lines dry. Had to crack all the lines and prime it to get it to crank. I also need a bigger supply pump. I'm running the holley black pump(140 gph at 14 psi). I've got no pressure at wot. Anyone running a bigger pump thats regulated at 15 psi?

 

[KLockliear]

Lines make a big difference if you don't already have them. The biggest RESTRICTION in the system is the banjo fitting on the end of the stock fuel line at the VP44, not the banjo bolt itself.



We offer a kit to replace all the fittings and lines from the lift pump to the VP44 with AN style fittings. Check the website for more info and pricing.

 

[dlange]

I'm running a carter "black pump" in tandem with the original lift pump and stock lines, and it runs about 20 on the road, and about 16 at w. o. t I dont know if I'm runnning as much fuel as you, (see sig. ) but it is working so far, and it was a pretty cheap set up. I hope this helps.



Dave

 

[Winspeed]

More PSI

I run the Holley black pump as well. If you change the spring in the bottom of the pump to a stiffer spring (they have an assortment of them at most hardware stores) you can boost that pumps psi to 22+psi. I run that that pump(@20psi) and #6 line with AN style fittings and it never drops below 17psi @ WOT. There isn't much need to spend big money on a new pump. I can put together a kit for you for relitively cheap(around $60 or so depending on what you already have) I hope this was of some help.



Adam

 

[BRI7070]

Having pressure is good but remember that a restriction in the system could raise pressure but reduce your volume. That is a good reason to replace the stock banjo fitting in the VP-44.



When your power levels increase so does the volume demand for #2. And at some point the restriction at the Banjo will not allow the needed volume to pass. You will still have pressure but not the volume.

 

[Blacksdieselhp]

Well, I talked to a guy at Aeromotive inc. and I decided to try one of their pumps. I am going to run -8 an lines and fittings from the tank to the injector pump. I am going to use the A1000 pump and 13301 regulator. This should be way more than enough volume to feed mty setup. I plan to keep going with the bombs so maybe this setup will be good from here on out. I appreciate your help.

 

[willyslover]

do replace the lines from the injector pump to injectors. . you can get them from Van Haisley or Enterprise and I think Piers has them also. . makes a big difference

also you will see the loss of fuel prime frequently as the injector pump is the issue not the supply [after upgrade to the -8]. . you have to learn how to get out of the throttle now. . LOL ease off it not abrupt shut off or it will happen even after the upgrades ala a vapor lock

 

[Hohn]

Gary... "makes a big difference" Exactly what kindof difference??



You might want to PM CSutton. He has had good results with the Aeromotive A1000, but his is a VERy complicated setup with regulators and such trying to get the pressure down.



The Aeromotive pumps will move enough liquid to play backup on a fire truck!!



Justin

 

[willyslover]

justin. . PMed ya. .



OH BTW the upgrade only needs be done on very high HP rigs looking for even higher numbers. . or rigs going to go into the 700's + IMHO [these things are a bit pricey for a 600 truckand stock can take it there]



chris has had the Aeromotive pump and regulator for over 2. 5 years now. . one of the better lasting units so far. .

do a search as the have been several threads about his set-up

 

[RKohn]

Have you thought of trying..

to mount the fuel tank on the hood and running 5/8" hose straight to the pump? :--)

 

[MCummings]

Hey Gary,,

Can I have a PM also?





I think that vapor lock situation has made plenty of VP44's be replaced when they didn't need to. What I have found out about the vapor lock, is, All you need is some more RPM. The starter only turns the truck over at 100-200RPM, and you really need 500RPM+ to get the truck fired without cracking the lines...



On my truck, If it shuts off from vapor lock, I just let the clutch back out in gear to get the RPM up again (above 500RPM) sometimes it has taken 1,500RPM to get it fired back off.



What I think what happens, is the pump aeretes (air in fuel) the fuel and it gets air in the lines,, but it's just a little bit of air.



AUto transmission guys are stuck crackin' the lines, but the manulas can get some speed up and a good clutch workout.





I didn't think it was possible to suck the fuel lines dry since,, once the truck is running, the fuel system is a "closed loop".



Merrick

 

[DPS]

I would like to make a quick point here. Loss of fuel supply pressure is a leading cause of pump death in 24v motors. I have access to a very good aftermarket auxilary fuel system that will prevent pump death from fuel starvation in vp 44 pumps. Also adding bigger fuel lines will compound the fuel starvation problem.



On a side note think about getting bigger fuel tubes to go from the lines to the injectors.

 

[HoleshotHolset]

"Loss of fuel supply pressure is a leading cause of pump death in 24v motors."

I couldn't agree more.



Matt