12v fuel system with a twist

stillsmokin

stillsmokin

all out of fuel
Joined
Jan 23, 2007
Messages
228
I'm working on a fuel system for an older 12V dodge, it sort of a street/puller system. A FASS cost a bit much plus it just wouldn't look right here. Here's what I have gathered so far, 5/8 ID suction tube in the tank up to bulkhead in top of sender (my own home built vulcan). I'm thinking 1/2" or maybe 5/8" for lines an hoses (but I am on the fence), Dual CAT type fuel filter/ water seperator, Aeromotive 13301 boost referenced bypass regulator, 1/2 or 5/8 return line. I want to run 2 different fuel pumps. I thought about a walbro 392 for say in town driving/highway with the ID of the hosebarb fittings machined to a more reasonable size, but I don't know if it will keep the draw straw primed for easy starting? The other "competition pump" will flow a whopping 4.4 GPM @ 20 psi (or in more p7100 friendly terms 5.3 GPM at 60 psi) however is not rated for continuous use (gets hot) OR TRANSPORTATION USE, thus the walbro as a primary.

Now the twist. The regulator and fuel pressures might sound strange to some, the system is for a VE pumped 12V. It is heavily modded and actually has had the entire fuel supply system modded a year back for similar problems. Full 3/8 from inside the tank to the pump, custom application cummins piston type lift pump, and big banjo bolts :hehe: are not enough so it all must go. With newly found traction it will actually pull the system pressure down too low while pulling the sled. I actually want to have the system capable of fueling a pXXXX if I ever have the $$$ to step up.
 
Well glad to some are still trying to get the most out of a VE :rockwoot: I bypassed the stock filter and went with a moroso canister filter, and ran 1/2 aluminum feed and return lines. How much pressure are you running now, and how much are you going to try to run? I have been worried about too much pressure and blowing the seals out of the little VE. Good luck
 
I've heard 18-20 is max pressure. I would like to be at 18 to stay safe. I am 16 at idle now, but then when the coal starts really rollin out the stack it falls like a rock.
 
The consumption rate of the engine will be less than 40 gph, I think the 300 gph will keep it mixed up well though.
 
Roughly what is the most power that can be had from a VE pump without heavily modifying the internals? Sharp truck stillsmokin:Cheer:

Eric
 
488 is the most out of a pump with a stock 12mm head. Change the rotor head out to 14mm and 650 is the highest I have seen.


Andy
 
stillsmokin said:
I've heard 18-20 is max pressure. I would like to be at 18 to stay safe. I am 16 at idle now, but then when the coal starts really rollin out the stack it falls like a rock.
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I have run as high as 65psi but above 30 psi does not help.I am doing a 200gph at 45psi now.Maddog said that he has run 60psi at the track & 30psi street.
 
DART505 said:
I have run as high as 65psi but above 30 psi does not help.I am doing a 200gph at 45psi now.Maddog said that he has run 60psi at the track & 30psi street.
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Maddogs truck is Ppumped. I think stillsmokin is referring to the VE pumps found on the 1st gen trucks.
 
dmaxpower said:
wouldnt p pumping it be cheaper, sorry for the hi jack
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Thats a joke?.. Right? Seriously converting to a p7100 is costly unless someone has a pump, set of sticks for core, a set of lines, IP gear, and a timing cover they want to give to me. I won't hold my breath.
 
If it helps, the truck is heavily modded, (my sig isn't working for some reason) people guess its in the 400-450HP 900-1000LBS ft range no drugs. It runs pretty hard I guess. Traction loss at 60+ mph on dry pavement is interesting.
 
teddybear said:
Maddogs truck is Ppumped. I think stillsmokin is referring to the VE pumps found on the 1st gen trucks.
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Yes I was talking P.
 
Now that we have that cleared up. Does anybody have any answers to some of my original questions? I could use a little help here, Maybe some of the VP guys could help with system design as we run close to the same fuel pressure.
 
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