eb02z06

iTrader: (18)

Sorry guys I know it's the wrong section but I figured this is the best place to ask. I'm upgrading my fuel system to -8 feed lines, aeromotive rails etc. The crossover for the rails is going to the back of the intake. I tried to run a -8 crossover but the fittings hit the back of the firewall on the driver side. No matter which way I turn them it's no go. So will a -6 be suficient or do I have some other option-I'm not going to cut the firewall-that's for sure. Basically a -8 feeds the front of the rail on the passenger side-a -6 will be crossover from the back of the pasenger rail to the back of the driver rail and at the end of the driver rail is a magnafuel regulator which has a -6 out to the stock return line.

Will this cure my fuel pressure drop at wot.


Thanks!

qqwqeqwrqwqtq

Well, a -6 feed and crossover is sufficient for much more than 1000rwhp so you -should- be fine, but I generally like to keep the crossover the same size as the feed line.

Boostaholic

iTrader: (4)

I run a -10 feed into a -10 -8 -8 Y, into the rails then -8 back to each side of the regulator

seems to work pretty good

eb02z06

iTrader: (18)

But your car isn't a C5-that's where my problem lies.

Boostaholic

iTrader: (4)

Why does that pose a problem? My fuel system would work just fine in a C5 far as im aware

eb02z06

iTrader: (18)

It's becasue the firewall won't allow a -8 full flow swivel-it hits the rear firewall-that's the problem.

kp

iTrader: (34)

If the rails are pipe thread yo can cut them down a little and rethread them, or just use the pipe thread to hose 90 degree fittings. Might need a 3/8 pipe tap to get them to line up.

But I dont think a -6 on the crossover will hurt anything like Jim said..

eb02z06

iTrader: (18)

It's the Aeromotive rail that uses a -8 inlet with a o-ring-so i can't cut it down. Damn C5's!!!!

ChevyChad

iTrader: (50)

Will something like this work?

Here are a few more:

http://store.summitracing.com/egnsea...115+4294906716

eb02z06

iTrader: (18)

I just said screw it. Took off the cowl and cut the fiberglass part for the -8 90 to clear-you'll never see it unless you look for it.

Old Geezer

iTrader: (3)

the o'ring fittings are common, strait NF thread sizes. 9/16", as I recall. Cut it off, run the tap down a bit, and life's good.

eb02z06

iTrader: (18)

Man what a pain in the ***!!!! After cutting the cowl on the driver side I found the fitting on the passenger side also hit-it was a HUGE pain to get the manifold on!!!!! I don't know how the rest of the Vette guys are running rails or if this is just specific to the aeromotives? So basicaly my inlet is the passenger side front rail-the cross over is at the back-8 and the regulator is at the front of the driver side. Fired it up last night and checked for leaks and there was none-all seemed good. One thing that I did notice was that fuel pressure drops immediately after the car is shut down-Is this normal? I'm using a magnafuel boost refrenced fuel regulator.

Old Geezer

iTrader: (3)

Unless there's a check valve in the pump, or added into the feed line, the fp will drop quickly.
You could add a check between the pump outlet, and the feed line.
I don't suggest the check be in before the pump, as that will introduce uneeded restriction to pump supply.

ChevyChad

iTrader: (50)

wouldn't you want to add it on the return side? Mine does the same thing...

kp

iTrader: (34)

Even if you do a check valve most aftermarket regulators bleed down aweful quick, not even worth it IMO. The pump will turn on when the car is cranking, may take a few extra crank revolutions to fire it up but its not a big deal..

Old Geezer

iTrader: (3)

No check on the return. Doing so will create a blockage, and raise FP til something blows....

ChevyChad

iTrader: (50)

How? Doesn't a check valve allow however much fuel thru one way, but won't let it go back the other way?

405HP_Z06

iTrader: (11)

Use two of these in the fuel rails and crossover with #6. You won't have any problems with the 3/8 crossover.

The problem with #8 is the size of the hose socket, too big to squeeze between the intake and firewall.

stevieturbo

Mines exactly the same. 2 x 044 Bosch pumps, Magnafuel reg. Pressure drops as soon as pump stops.

No big deal. As long as it stays up when the pumps are running !!

Im using a single -8 Alu hardline to the front of the car, an Aero fuel dist block, then into a pair of -6 lines, one to each Aero rail. These then tee into a single -6 line to the Maganfuel reg, then to the tank.

My FP is rock solid at all times.