Technical > Spud Miller's Cave

Where to return fuel

(1/5) > >>

BK:
 If I run my return line on the top rail of my car it would need to rise up a couple inch's to go in the top of the tank. I'm thinking that's not good. It would still be lower than the pump and check valve.
  I could put a bung in the back of the tank and keep the line pitched down all the way. The pump and check would be a few inch's above the top fuel level. But the return line would be below the fuel level most of the time.
 The other choice would be to return it to the feed line to the pump.
 Thoughts on the best scenario or other ideas.

Totally T:
I had a manifold with one return going into tank. Fitting was higher than the pump.

I have since made a manifold that goes into the feed line to the pump that all the returns feed into...its below the pump.

Spud Miller:

 No need to worry about keeping things running downhill. Pressure will get it all there. When pressure/flow stops, the check valve closes (it's supposed to anyway) and it's like putting your finger over one end of a straw. The fuel will likely stay in the line behind the check valve even if it is downhill to the tank.

 If it's your main check valve (with a pill inside), it might be nice to have it a bit higher than the level of the fuel just because you won't spill as much when you change the main pill.

 Returning fuel to the pump inlet is perfectly acceptable and can save you a bunch of hose. Sometimes the need to purchase fittings with return ports can cancel out any hose savings however.

 Spud

dreracecar:
I have been running all returns into the inlet for years, never had any issue doing it that way
and the fitting to do that is only around $40

coupemerc:
My fuel returns are connected back to the main fuel line. I have not run my car yet but I know that the two fastest J/F guys on the planet have been doing this with zero problems.

Navigation

[0] Message Index

[#] Next page