I got into a debate with a friend of mine on this subject and would like to hear opinions and or facts from the guys that have used sumped tanks. Not interested in the opinions of those who have never used a sumped tank.
Here's the deal, we sumped a tank on Austins car and coated it with Eastwoods sealer to protect the welds from rusting. Well last year on the Power Tour, we found out that was a bad idea because the coating plugged up his filters. So I've been waiting on a stock style hanger to come out with -10 capabilites to be used on an external pump.
http://www.turbobuick.com/forums/e85-technical-forum/294822-trick-billet-fuel-tank-pick-up.html
Well after looking at the hanger once it's come out, I'm not sure if I
m fond of the set up so I'm going to go ahead and sump a tank. It would be nice if someone came out with a nice fabbed sumped tank that was affordable and not aluminum but it's not happening.
Now here's where my question comes in, some people are buying sumps with 1/2" or -10 outlets and using one for the feed and one for the return. Others are buying sumps with smaller 3/8" or -8 outlets and using a "T" to feed into a -10 line, using both outlets to the feed the pump then coming back with a return dumping into the higher sides of the tank. Others are dumping directly into the top with their returns.
Now with the fuel returning at the bottom into the sump, it's technically going to create more drag on the pump because it has to push it into the tank?
With the return on the higher side of the tank, could still cause drag on the pump if the tank is full of gas? And whos knows if the fuel is spraying onto the hanger causing problems. How about air bubbles in the tank?
Coming into the top creates a couple problems in my eyes. First there isnt enough room to 90deg on the top of the tank with a -8 return becuase the tank sits too high and the fitting will hit the body tub. And if you return to the ttop of the hanger, your going to be spraying directly onto the hanger. Air bubbles in the fuel?
So, with those statements made, please correct my thoughts if I'm wrong. Also what is the best route in your guys' minds?
Here's the deal, we sumped a tank on Austins car and coated it with Eastwoods sealer to protect the welds from rusting. Well last year on the Power Tour, we found out that was a bad idea because the coating plugged up his filters. So I've been waiting on a stock style hanger to come out with -10 capabilites to be used on an external pump.
http://www.turbobuick.com/forums/e85-technical-forum/294822-trick-billet-fuel-tank-pick-up.html
Well after looking at the hanger once it's come out, I'm not sure if I
m fond of the set up so I'm going to go ahead and sump a tank. It would be nice if someone came out with a nice fabbed sumped tank that was affordable and not aluminum but it's not happening.
Now here's where my question comes in, some people are buying sumps with 1/2" or -10 outlets and using one for the feed and one for the return. Others are buying sumps with smaller 3/8" or -8 outlets and using a "T" to feed into a -10 line, using both outlets to the feed the pump then coming back with a return dumping into the higher sides of the tank. Others are dumping directly into the top with their returns.
Now with the fuel returning at the bottom into the sump, it's technically going to create more drag on the pump because it has to push it into the tank?
With the return on the higher side of the tank, could still cause drag on the pump if the tank is full of gas? And whos knows if the fuel is spraying onto the hanger causing problems. How about air bubbles in the tank?
Coming into the top creates a couple problems in my eyes. First there isnt enough room to 90deg on the top of the tank with a -8 return becuase the tank sits too high and the fitting will hit the body tub. And if you return to the ttop of the hanger, your going to be spraying directly onto the hanger. Air bubbles in the fuel?
So, with those statements made, please correct my thoughts if I'm wrong. Also what is the best route in your guys' minds?