Aluminium Drop Tanks

[Public Enemy]

After reading posts about the in car fuel smell associated with surge tanks mounted in the boot i was wondering if having an aluminium drop tank (SLR5000 style) built with an in built surge tank would be feesible. I guess it's just a matter of more money!!!

I would also go for added baffling in the tank as well or maybe that foam stuff you can get for motor bike tanks.

What do you think?

I guess getting to the fuel pumps may be a little more difficult.

ANyone know where i could get one built in Perth?

cheers

Paul

[R31Nismoid]

just mount a surge tank on the underside of the car.

I think there could be enough room if your sneaky enough.

would save the crazy cost of a custom fab tank that your after

[maccattack]

just mount a surge tank on the underside of the car.

Thats where mine is mounted - no fuel smell at all

[Sayajin]

GREAT!

I wondered if it was plausible to mount the surge tank on the underside.

Good to hear someone confirm that it is. Thanks guys.

-Sayajin

[Wheezy]

MMMMM I once a drop tank (Torana Style) on an R31 coupe in japland.....looked friggin sexy! DO IT

[bubba]

Briffa Engineering in Morley made the droptank for my mates one tonner

[raz0r$harP.UK]

Surge tank + teflon-lined braided hose = no fumes.

[Sayajin]

Surge tank + teflon-lined braided hose = no fumes.

I assume this is with the surge tank in the trunk?

-Sayajin

[Craved]

Or use a sealed box as legally required if you have it in the boot.

as for the drop tank, to remove the wheel well and reinforce the area, then have the drop tank installed and engineered . it will cost you a fair bit.

have thought about this before though .. you also shift the balance of the car since the std tank is over the rear sub frame, this would move the weight back and potentially cause some over steer characteristics when full tank and cornering

[Public Enemy]

Thanks for the replys guys.

Might as well get a quote for one i guess cheers for the contact details bubba.

For those that have mounted underneath, what size surge tank did you use? I was planning to run Sard 7.5l with twin bosch044's.

Thats a pretty big tank to hang underneath.

[R31Nismoid]

7.5l surge tank?

What setup does this car have that requires something that large?

2.5ltr would be enough for most easily

[Omurru]

Thats where mine is mounted - no fuel smell at all

Got any pics?

[dontfeelcold]

If you were going to the trouble of a drop tank, you should also put baffles and trap doors in the fuel tank, this forces the fuel into the front centre of the tank. Just like your engine sump. Also bend the top of the baffles into the centre to stop the fuel from sloshing out of them.

Edited April 19, 2007 by dontfeelcold

[sinistaGTR]

a mate used to have a drop tank in his 32 looked friggin so gay, torana meets japland nope doesnt work lol

[Public Enemy]

What setup does this car have that requires something that large?

2.5ltr would be enough for most easily

can you fit 2 x 044 pumps inside a 2.5L? I was looking at the 7.5 because it says its big enough to fit 2 bosch pumps, thats the only reason i would use one so big.

Don't care if it looks good or ghay, it's not there to change the look of the car or an attempt to grab rice points or look like a Torana ffs. in fact it would be painted matt black so you prolly wouldnt even notice it.

Anyways i thinking just mounting the surge tank underneath is the way to go.

[R31Nismoid]

Why would you ut the pumps inside? I dont get it.

It goes like this

- You have a lifter/feeder pump to the surge tank.

- From the surge you run whatever pumps you need external of the surge tank.

- The externally mounted pump(s) feed the fuel rail

[GeeTR]

can you fit 2 x 044 pumps inside a 2.5L? I was looking at the 7.5 because it says its big enough to fit 2 bosch pumps,

I too didn't want the surge tank in the boot, or have to run $$$ lines just for smell. I'm currently mocking up a s.tank to fit up under the car, in front of the f.tank. Stock pump as a lift, then a 044 sitting OUTSIDE the enclosure pushing fuel up front.

PS: Has anyone else heard, that you can get increase knock value from driving hard with below 1/4 fuel in a BNR32?

[25GTT]

Yup Briffa engineering in Morley, has already done a couple on the 33 gtsts anyway. Ask for Mick he is the owner

A very old school friend of mine, tell him webby sent ya, i used to sit next to him and get in trouble for laughing all the time.... oh those were the days.

He has done plenty of work to mine and am happy with the results!

[Public Enemy]

Why would you ut the pumps inside? I dont get it.

It goes like this

- You have a lifter/feeder pump to the surge tank.

- From the surge you run whatever pumps you need external of the surge tank.

- The externally mounted pump(s) feed the fuel rail

why mount them out side when you have them inside, i don't get that. Especially when there under the car getting hit with rocks and covered in dust and water.

All the drawings i've seen from sard show the pumps inside the surge tank.

[T04GTR]

hard lines dude, much better