Jump to content
SAU Community

Recommended Posts

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

Link to comment
https://www.sau.com.au/forums/topic/165166-aluminium-drop-tanks/
Share on other sites

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

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.

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 by dontfeelcold

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.

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

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

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,

:D

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?

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!

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

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • What copper washer do you guys use on the bleeder bolts? The existing one I have I had no idea where to find it in a local store, I did buy some online but that are only 1mm thick whereas my old one is 2mm+ thick and when I put the new washer out and squeeze the top radiator hose I can hear a bit of air but not with the old one. Does this matter? The new one doesn't leak, but the inner diameter is a bit loose whereas the old one threads on the bolt.
    • Howdy all, after being out a few weeks ago on a spirited drive in my GTR I have 2 issues that oddly have appeared at the same time. Whilst accelerating quickly through the gears all of a sudden i’ve lost power at the top of third gear (below redline around 6000rpm) for no obvious reason.    From that point onwards the car has been running rich on idle, won’t really rev under load without a ton of black smoke and the odd backfire, and dying as a pull up to a set of lights unless I keep the revs up around 1500rpm. In addition when shutting down the car that same night (I was 10 minutes from home) I noticed one of the turbos was significantly noisy on wind down when shutting off the engine. After letting the car cool down overnight it starts up fine, although once it gets to temp the revs start to creep up and down, the exhaust is darker than it should be and it also sounds like it’s running rich (fat note) I’ve put a new set of plugs in it - no change, the old plugs all seemed OK with two of them being somewhat richer/fueled up than the other 3 with 1 being borderline. I’ve smoked tested the intake system via the front of the Turbos, found a split vacuum hose going to the factory boost gauge sender, which I have since replaced.  Also found another leak on the gasket coming off the rear turbo outlet, have also replaced this. After fixing both of these leaks - still have the running rich issue. I’ve also tried another pair of AFM’s - no change here After pulling off the front turbo intake pipes, there is obvious shaft play in the front turbo, which now hisses loudly on light revvs although I can’t see why this would make the car run funny even under idle. I’m curious to know why it’s running rich before I potentially replace/rebuild turbos. The car is completely stock <50,000kms  other than an exhaust. Oil and coolant are all clear. I haven’t bothered with coil packs as it looks like they won’t be the issue due to condition of the plugs. Any help appreciated as I cry myself to sleep!
    • No probs at all. I used to love trying to dig up obscure info for those in need where possible going back 20+ years on SAU.  I did have another look and couldn't come up with any closer match. I'm leaning towards those skirts in your first pic are custom fitments, cut down/extended or from another car entirely and modded to fit an R34 sedan. I would've thought someone in Japan had them and taken a photo at some stage over the last 2 decades but there's nothing. Someone out there must know surely.
    • Welcome mate. Any pics? Even with a DE I'd be well happy if I had that as a 1st car. 
×
×
  • Create New...