Fuel delivery / rails / pumps

[Jason84NA2T]

Re: maybe stupid

CanadianZ wrote: when you run two walbros in parallel you would run two lseparate ines straight to FPR?

Only if you need that kind of flow... I've seen data showing a 5/16 fuel line can flow over 4000cc/min or over 600whp worth of fuel. The problem is the rails and barbs, where the ID of the end of the hard line is smaller.

upgraded lines will be -6AN which are about 3/8"

[SATAN]

MikeZ wrote: Satan, how tight is the fit with both walbros in the tank? Does the fuel come out of the tank using the stock ports and then you connect the Y block, or is it strictly on the Y block?

sorry just remebered I posted this.

it is too tight. You have to cut part of the baffle(while leaving it in the tank :shock and then mount your two pumps pretty much right next to each other. This isnt always a good Idea tho. youare supposed to have two pumps int eh same tank at least 6-8 inches apart from each other. I guess I'll just have to make sure I run at least a half tank all the time :roll:

Here is a pic of my setup. the electrical tape was just there to see if everything was working correctly at the time.

[Alex86na2t]

That Y-block is probably killing at least 20% of your flow. Duel pumps should be run with completlely seperate lines. One line to one rail, then after the injectors hook up the y-block then the regulator.

[MikeZ]

Thanks for the pic.

[G-E]

can't you install one pump higher than the other and run an extension hose/tube to the bottom for pickup without cutting anything

[MikeZ]

G-E wrote: can't you install one pump higher than the other and run an extension hose/tube to the bottom for pickup without cutting anything

That sounds like an inline pump.

[Jason84NA2T]

Alex86na2t wrote: That Y-block is probably killing at least 20% of your flow. Duel pumps should be run with completlely seperate lines. One line to one rail, then after the injectors hook up the y-block then the regulator.

You still increase flow potiential substantially. The single line he's running them both into can move more fuel than he's going to need... so I don't see an issue there.

[SATAN]

[quote]Jason84NA2T wrote:

That Y-block is probably killing at least 20% of your flow. Duel pumps should be run with completlely seperate lines. One line to one rail, then after the injectors hook up the y-block then the regulator.
You still increase flow potiential substantially. The single line he's running them both into can move more fuel than he's going to need... so I don't see an issue there.

well if I wanted to go all out then I would have placed the pumps at opposite ends of the tank and ran one -8 line from each one(each pump would have its own -8 line) all the way to the fuel rails then out of the fuel rails and then each side could come together at the FPR with a -8 return. The fpr has two inlets so I wouldnt need a Y block at all. but like jason said, this will be fine, I promise.

[SATAN]

[quote]MikeZ wrote:

can't you install one pump higher than the other and run an extension hose/tube to the bottom for pickup without cutting anything
That sounds like an inline pump.

I dont think he means feeding one from another. I think he means stagering them so there is more room and just running the pickup of the higher one down next to the pick up of the lower one.