Large Bore Fuel Line Setups

[Grabinov911]

Does anyone have any pictures or descriptions of a large bore fuel line setup from the stock tank to the carb? I'd like to run a half inch line from my stock tank and thru a "built" mechanical pump, but I don't know how to build a pickup for the stock tank. The biggest I can use with a stock pickup is 3/8".

Do I leave the stock pickup in there as a gas gauge and then drill a hole for another pickup? (Pictures?) Is 1/2" pre-bent hard line available or do I need to switch to flex line?

Thanks

Greg

 

[68 HEMI GTS]

ive seen people remove the stock pickup tube and drill it out for a 1/2". on my dart i put a sump on the stock tank, so it uses a stock sending unit for the fuel gauge then i run a -8 braided line up front. -8 is about the same as 1/2". you can also run 1/2 aluminum line up front, but its kind of hard to bend without putting kinks in it. my RR had a 3/8 pickup with -8 running up from there, thats the set up it had when i got it. guess it depends on what your doing, 3/8 line will supply a pretty stout motor. Pump theory, the bigger the suction line to the pump the better.

 

[AMX364]

If a 3/8 line can be soldered in, then what is the limit? Before you could buy 3/8 pickups, you had to make them instead.

 

[67 coronet]

just a quick question,why 1/2 inch?3/8 will supply 700 hp pretty easy.if its for a race set up,why not a fuel cell?

 

[Grabinov911]

just a quick question,why 1/2 inch?3/8 will supply 700 hp pretty easy.if its for a race set up,why not a fuel cell?

There seems to be a lot of debate about how big a line is needed. The engine shop I'm working with is fond of the 1/2" or #8 because of the volume of fuel that is carried in the hose. Essentially the line itself becomes something of a reservoir near the pump/carb. I've also read different things about how much 3/8" will support. Some seem to say up to 400hp, some say 500hp, some say more.

Fuel Cell: I have thought about that, but the well-done fuel cells I've seen are mounted between custom rails and inset into the trunk pan. I suppose it may be possible to simply mount one in the trunk without cutting up the rear of the car, but I'm not sure. Due to the nature of suspension and drivetrain mods, I've been able to significantly improve the car WITHOUT cutting anything up so far. I'm not sure I want to start cutting.

Thoughts?

 

[67 coronet]

i personally have supported 600+ hp with 3/8 steel line and never had any issues.if you are really worried about it,set it up with a regulator and return line system.much more stable then a simple dead head setup.

 

[Grabinov911]

i personally have supported 600+ hp with 3/8 steel line and never had any issues.if you are really worried about it,set it up with a regulator and return line system.much more stable then a simple dead head setup.

Do you happen to know if the second bent-steel line that runs to the engine bay can be used as a return line? It runs up the passenger-side fender well and is plumbed into the carb on a stock setup and may therefore be a vent but it sure looks like it goes back to the tank. Only problem is that it runs through the big tube in the trunk, and I don't have any idea what's going on in there!

 

[moparcrazy]

1/2 inch sending units from magnumforce !

http://www.magnumforce.com/magnumstore/shop/category.aspx?catid=50

 

[Grabinov911]

NICE! Excellent find MoparCrazy

 

[Grabinov911]

Does anyone know if the second bent-steel line that runs to the engine bay can be used as a return line? It runs up the passenger-side fender well and is plumbed into the carb on a stock setup and may therefore be a vent but it sure looks like it goes back to the tank. Only problem is that it runs through the big tube in the trunk, and I don't have any idea what's going on in there!