how to fit a surge tank?

[IN 05 NT]

hey guys,

ive got a surge tank, sitting at home, waiting to b fitted...cant be that complicated...but im lost...

the tank i have is a 2 litre upright cylinder, with to out lets at the top (one above the other..). and one at the botton..

well, the one at the bottom obviously runs to the motor...one top from the tank, to the surge tank, and whats the other for? breather or something?

i already have an INTANK efi setup.... so i shouldnt have to use a lift pump right?

i searched! but nothing on HOW TO FIT....

any help greatly appreciated, and rewarded!, lol,

blake

cheers, blake

[joecoolmk2]

it's an overflow, and a breather, that should go back into the tank.

p.s., witzl did a thread on EFI which includes surge tank setup. search and yee shall find.

[kingmick]

bottom one to your high pressure pump, and the to top one are low pressure from fuel tank and second top one you can return to your tank as i do or return from the fuel rail as some do, i hate hot fuel.

[kingmick]

lol cancel what i what i said about return from fuel rail! thats only if you have three top outlets/inlets.

[IN 05 NT]

bottom one to your high pressure pump, and the to top one are low pressure from fuel tank and second top one you can return to your tank as i do or return from the fuel rail as some do, i hate hot fuel.

ok, so ones a return to the tank....sweet,

shouldnt my EFI pump push through the fuel alright? or do i need 2 pumps?

as i figure the fuel should just flow throught the tank? im lost

[kingmick]

ok, so ones a return to the tank....sweet,

shouldnt my EFI pump push through the fuel alright? or do i need 2 pumps?

as i figure the fuel should just flow throught the tank? im lost

efi will push it to the rail fine{one of them} and then you need a lift pump.

[IN 05 NT]

ahaha ok,

so now whats the purpose of the lift pump? and why wouldnt the efi pump do it if its doing it fine now

lol

cheers, blake

[joecoolmk2]

ahaha ok,

so now whats the purpose of the lift pump? and why wouldnt the efi pump do it if its doing it fine now

lol

cheers, blake

seriously, go to FAQ and look at the Witzl's EFI thread, it'll tell you all you need to know.

anyway, the lift pump lifts the fuel from the tank and fills the surge tank, cuz an EFI pump sucks at sucking! it doesn't have enough suck to pull the fuel uphill, you basically have to force feed it.

[IN 05 NT]

yeah im looking at the witzls thread...

im getting the idea now, ......so i have to have the lift pump after the intank EFI pump...or do i have to remove the efi pump.....run the lift pump into the surge tank, the the EFI pump to to fuel rail?

[IN 05 NT]

ahh k....so i'll have to remove the intank efi pump....hmmm, more money needed, lol!

blake

[TA-022]

4-7psi intank pump to replace your efi pump.

hook this to 1 top outlet

2nd top outlet straight back to your tank in case it fils ..then it returns to your main tank.

bottom outlet to external efi hi pressure pump .. then to your exsisting lines running to the engine.

return from motor to main tank goes unchanged.

[mrshin]

No reason you can't use your intank pump as the lift pump, then use another external EFI pump to feed the engine.

[TA-022]

high pressure not a bit much for a surge tank?

fair enough then ... one less part to buy i guess.. learn something every day.

[joecoolmk2]

No reason you can't use your intank pump as the lift pump, then use another external EFI pump to feed the engine.

if you did that you would want a bigger return so that you don't blow hoses off the surge tank!

[1JZ.747]

i left my 255 walbro intake in as my lift pump, its fine.