Fuel Return Line Ideas?

Apex_speed · #1 (**permalink**) 05-15-2018, 07:02 AM

Quote:

Originally Posted by Gaz64

Can you post a picture of your sender, and the surrounding area, top of tank etc?

I need to figure out how to do image hosting and then link a photo as I'm not having any luck with uploads.

I think I have the return sorted out though. I'm either going to use a variant of Craig's method in the link above and go into the passenger side tank vent or modify the sender plate.

There is not much room in the fuel sender plate but I'm visiting a friend with a hydraulic supply house tomorrow and he thinks he can put something together that will fit. Possibly -4.

Gaz64 · #2 (**permalink**) 05-15-2018, 07:37 PM

Don't go down to -4AN, your fuel pressure will not adjust easily, especially with a big pump.

eschaider · #3 (**permalink**) 05-16-2018, 03:35 PM

Quote:

Originally Posted by eschaider

Fuel line sizing can be a challenging task for both the feed and return side lines ...

Electric pumps pump their max flow rate the moment you turn them on. If you have a 250 HP capable fuel system and a 200 HP engine, when you are driving around town using 25 HP to move the car, you actually return 225 HP worth of fuel (250-25) to the tank. That means a prudent fuel system designer would provide a return capability nearly equal to the feed capability.

Aeroquip has an excellent page on fluid velocity (volume) through their hose and how to select the proper hose sizing to optimize this dynamic...

Ed

Quote:

Originally Posted by Apex_speed

... I'm visiting a friend with a hydraulic supply house tomorrow and he thinks he can put something together that will fit. Possibly -4.

This would be a mistake of considerable proportions.

Ed

Apex_speed · #4 (**permalink**) 05-17-2018, 08:02 AM

Quote:

Originally Posted by eschaider

This would be a mistake of considerable proportions.

Ed

Got it. We came up with a solution with all -6 hardware going through the sender plate. I have the parts and just need to make sure it works and will post.

Gaz64 · #5 (**permalink**) 05-18-2018, 04:24 PM

Quote:

Originally Posted by Apex_speed

Got it. We came up with a solution with all -6 hardware going through the sender plate. I have the parts and just need to make sure it works and will post.

Sounds like you will have a happy result.

Photos please.

Gary

Apex_speed · #6 (**permalink**) 05-18-2018, 04:48 PM

Quote:

Originally Posted by Gaz64

Sounds like you will have a happy result.

Photos please.

Gary

Will do. I've been too busy running down small parts to start putting it back together.

It also looks like I have a solution for my coolant temp sensor. Roush put a billet extension block between the block and the t stat housing. Perfect to drill and tap for the CTS.

Gaz64 · #7 (**permalink**) 05-18-2018, 05:04 PM

Sounds like you getting somewhere now.

Gary

scootter · #8 (**permalink**) 06-15-2018, 01:59 PM

Just my two cents. If you have a stock Superformance tank with high HP, it will be an issue. I had mine carbureted with 850 Demon and a black Holley fuel pump. Once I got just below 1/2 tank, the pick up would suck air under hard acceleration. I had a few people say it wasn't possible. BS with 600 HP plus. The pickup is maybe 5/16" laying flat in the bottom of the tank facing backwards cut at a 45 deg angle with a tiny box around it.