Snyper

iTrader: (27)

Im setting up my fuel system to support around 1000whp. I have the magnafuel 625pump, aeromotive 13109 and LS1 speed rails. Will a -8 feet/-6 return be enough to support my goal of 1000whp?

MY99TAWS6

iTrader: (3)

I have a lonnies intank twin pump with 8 an feed and 6 an return, bigger rails and adjustable reg.It can feed 1000rwhp.

If was going to go much higher would have gone to custom tank, big single pump and bigger lines.

lt1badbird

iTrader: (-1)

i went with -10 feed and -8 return just so i know i never have to worry

The Beast

iTrader: (16)

I'm running twin in-tank modified Denso Supra pumps (390LPH each), -10 feed, Summit fuel rails, -8 crossover, Mallory boost referenced FPR, and -8 return. I wanted to leave some room to grow if I switched to e85 or an LSx block in the future.

Snyper

iTrader: (27)

Does anyone know if the Ford MS 80# SD injectors with the EV6 connectors fit the factor LS2 intake/rail setup?They look longer in the pictures than my stock injectors. I have speed inc rails with the stock manifold. Thanks.

onfire

iTrader: (17)

At 58psi it's wayyy big enough. Biggest design concern is a good regulator that will control prssure but not become too much of a restriction at those power levels. Weldon is one good choice.

Snyper

iTrader: (27)

13109 is too small for the pump? Id think the more hp the smaller the regulator no? Not as much fuel would be returning back to the engine.

cablebandit

iTrader: (37)

i got twin walbros....stock feed pro-products regulator...950rwhp no probs

onfire

iTrader: (17)

I don't have any opinions good or bad about Aeromotive. The higher the hp the better the regulator should be becuse you are returning a large volume of fuel back to the tank due to the dual pumps or single pump in the tank required to flow a great volume. Some regulators have a small return orifice size that can become a problem if they are not sized for big hp. (+1000rwhp is pretty big).

Snyper

iTrader: (27)

Well the Aeromotive has a -6 in/out setup. And since the return line is going to be a -6 id assume it would be good enough? I know the manufacturer of the twin 255 drop in bucket recommends using a -8 feed -6 return with this regulator...since the magnafuel will be feeding the engine with a -8 the same should apply no?

99Z28LS1

iTrader: (4)

This is a good thread, I too have the -8 feed and -6 return, I have another 255 to add to the tank, but I'm absolutely stuck on which regulator to buy

bad6as

iTrader: (17)

same power lever im going to use as -8 feed and -6 return

EPP

iTrader: (22)

I've seen problems with the fuel getting hot when on long trips with a large fuel pump, it seems to help when making the return line at least as large as the feed line. Bob

bad6as

iTrader: (17)

ok well ill do 8 feed and return, makes it easier when ordering fittings

Snyper

iTrader: (27)

hmmmm

bad6as

iTrader: (17)

do feed and return, would 30' be enough? 25' ?

onfire

iTrader: (17)

That's why I run 2 Bosch pumps. Just run one on the street and both on the track. Pressure/volume/engine heat makes the heat. If I run one pump, the gas tank stays cool. If I run both pumps and a small amount of fuel...you can feel the tank heating up since you are recirculating the fuel too much. If I ran a single large pump, I would run a full tank all the time on the street to dilute the heat and keep the fuel cycle down. Big difference in 15 gallons vs 5 gallons in cycle heat.

Pressure rise is coming from the regulator....not the return line....unless it's a carb system at 6psi.

The AN inlet/outlet on a regulator is not the restriction to worry about...it's the design orifice inside the regulator....make sure the regulator is designed for the amount of fuel you plan to flow through it.

Snyper

iTrader: (27)

I think im going to switch to the magnafuel regulator that goes with the pump. It has -8in/-6out

No Juice

iTrader: (11)

You're using the stock hard feed line correct? Thats a -6 right?

What are you using for a return?

Snyper

iTrader: (27)

Well right now my goals are ultimately 650-850whp on the street and maybe somewhere down the road shoot for that magical number.... I want to do a -10 to the pump then -8 to the rails then -6 back but I don't think Im going to be able to fit the -10 anywhere...the pump already has to sit half way up under my driver seat on the frail "rail"