Roadrunner 45

iTrader: (1)

Just about done with the fuel tank for the mini- should I put the bung for the return line at the top of the tank or the bottom? Top would be easiest, but I'm thinking that it may introduce airrate the fuel in the tank with the return fuel "splashing" in. If I put it at the bottom I don't know if the additional pressure on the line will mess with the fuel pressure regulator (I'm using the vette style fuel filter with the integral return). What do you think?

rao

iTrader: (18)

You ideally want it to enter in the top into a hose or tube that forces it down to the bottom of the tank.

Roadrunner 45

iTrader: (1)

I agree that that would be optimal, but would just the bung with no tube be a bad thing? I kind of have to have it at the top facing the front of the car- it can't be directly on top, so adding a tube would be more of a PITA. I don't want to do it if I don't have to.

Pop N Wood

iTrader: (1)

I set mine up that way. Can hear the fuel splashing back down into the tank when the FP runs. Sort of like a fountain.

But I am also running a carb and plan to alway have more than a third of a tank. If you are running FI you really need some type of sump in the tank. The return line should run into the sump to keep it full.

Did you say mini? What sort of car are you working on?

garys 68

iTrader: (1)

The pressure at the top or bottom of the tank will be the same. So dont worry about that issue.

z28mccrory

iTrader: (7)

I have my return in the top of the tank and it seems to be fine. I put a 10an bulkhead fitting in the right rear corner of the tank and the 6an return comes in at the top left corner.

Old Geezer

iTrader: (3)

Been "discussing" the "heated fuel problems" on another site. I came across this info. An interesting read:
http://www.patentstorm.us/patents/58...scription.html

$ho_tyme

iTrader: (3)

I have allways put in top,if heat in question you could run one those cool cans maybe??

You got any pics the build?

Roadrunner 45

iTrader: (1)

older pic- I need to snap some new ones to upload.
Body is off now, finished brakes, charging system, steering, exhaust, and just finishing fuel system. Then body can go back on and all I'll have left is interior tinwork and wiring.

z28mccrory

iTrader: (7)

That is a SWEET project

forcd ind

iTrader: (7)

i have always run mine up top, into free air space-i had a problem with one once when i ran it down low, would raise the fuel pres because of the restiance fighting pushing fuel into fuel, but some havent had this problem

cooks 7

I added a sump to my tank with only one hookup and am running the return on the top of the tank, I agree with the sounds like a fountain comment, it's kind of annoying. I figured that running the return into the sump is just adding hot fuel closer to the feed than if you dump it back somewhere else in the tank. Once I have all my tinwork in and add some sound baffling I hope I won't be able to hear the fuel returning to the tank, plus right now I only have a couple gallons in there so the return fuel is falling a long way, do you have any pictures of the tank? It might help form a more informed decision. Cool project, gotta love Ls1s in little British cars!

Roadrunner 45

iTrader: (1)

Well, I guess I'll be ok with the bung at the top- loud exhaust = no fountain noise. I don't have my camera here, I'll snap some pics of the tank and rest of the car on Friday.

rao

iTrader: (18)

Very neat project

Just us a bulkhead fitting and use a piece of hard tube on the inside that goes down to near the bottom. You can certainly just dump the fuel in the top if you like.

$ho_tyme

iTrader: (3)

Please post up some more pics. Thats nuts getting that motor in there,people dont realize how small they are till they see one in person. I just sold my 79S =(

Ketzer

More Mini piccies!!!
Neat as heck!

leonpiper69

iTrader: (3)

search for more posts by him. he had put up a bunch of pics before. i remember its a cool ride.

TJ

iTrader: (10)

i would not put the return near the pickup. depending on the pressure and amount of fuel in the tank, it may cause an aeriation effect. could affect the volume of fuel going to the motor.
not likely, but possible.