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Plate Baffles Vs Tank Foam


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  • Gender:Male
  • Location:South Oz
  • Real Name:Stewy
Just looking to get some opinions on the pro's and cons of the foam as opposed to the usual plate baffles. Basically i've just pulled out my standard fuel tank and noticed the stock baffle is loose at the bottom and moving around, i'm in 2 minds as to whether i try and solder it back into place, or remove it and stuff tank foam in. It's a track car which runs E85, changing it every few years isn't an issue, i'm just not sure if there's anything more i need to know about the foam before i look at it as an option. I'm assuming it's fine to use within the standard tanks, and that there's no issues getting it in through the inspection hole. The car is used for drift, baffling is fairly important, i have a surge tank sitting on my shelves, but not keen to put it in and lose boot space unless i need to.

cheers

Posted 14 January 2012 - 09:48 PM

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  • Gender:Not Telling
  • Location:The junk yard
  • Car(s):BNR34,BNR32,ZX10R,RODEO,MU-X
  • Real Name:Mick
My offroad race car had foam in the tank when i brought it and after losing 1st in class and 3rd outright cause the foam started to break down and blocked the fuel filter I swore I'd never use it again and custom made a tank with baffles and built in/under surge tank and haven't worried about it since

Posted 15 January 2012 - 09:27 AM

R32 GTR - 293rwkw = 11.13 @ 123 mph

fastest 1/4 mile times on stock ceramic turbo

R34 GTR - 10.8 @ 132mph
SMSP-S - 1.04.6

built by me, tuned by Scott @ Insight motorsport

  • Gender:Male
  • Location:Sydney
  • Car(s):Homebrew SR GTX3071
  • Real Name:Jason
^ that was a valuable response, thanks

Posted 15 January 2012 - 10:26 AM

I have no sympathy for the unitelligent and if you knew me personally you would realise trying to insult my intelligence with that last comment is a foolish thing to do.


High horse deluxe, now with E=MC2.
 

SO f**kING POWER!!!!


SO f**kING POWER!!!!

  • Gender:Male
  • Location:South Oz
  • Real Name:Stewy

My offroad race car had foam in the tank when i brought it and after losing 1st in class and 3rd outright cause the foam started to break down and blocked the fuel filter I swore I'd never use it again and custom made a tank with baffles and built in/under surge tank and haven't worried about it since

thanks mate, how long had it been in there though? i recognise that i will need to replace it every year or 2, but the stuff i'm looking at is from autosport and designed for ethanol/methanol use so i'd expect it would work fine until then.

Posted 15 January 2012 - 10:32 AM

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  • Gender:Male
  • Car(s):VY supercar
  • Real Name:Brad
Foam only slows down the movement of the fuel sloshing it does not prevent it at all.

If you drifting the vehicle the fast direction changes will allow the fuel to build up momentum then foam will be useless.
You need swinging baffles to prevent surge in those circumstances.
You have two simple options.

Run the tank close to full or an external surge tank.
In all my experience foam will not help sustained fuel sloshing.

Posted 15 January 2012 - 10:59 AM

Those who lead want too......
Those who follow have too.


  • Gender:Male
  • Location:melb
  • Car(s):r33 gtst skyline
  • Real Name:manuel
What about mounting the surge under the car if you dont want to lose boot space?

Posted 15 January 2012 - 12:52 PM


  • Gender:Not Telling
  • Location:The junk yard
  • Car(s):BNR34,BNR32,ZX10R,RODEO,MU-X
  • Real Name:Mick

thanks mate, how long had it been in there though? i recognise that i will need to replace it every year or 2, but the stuff i'm looking at is from autosport and designed for ethanol/methanol use so i'd expect it would work fine until then.


I had had the car 4 months and the guy I brought it off told me he had changed it about a year before i brought it, even so changing the foam is a shit job no matter how you look at it, even worse if you have to do it every year or so and if it does give up early you are in the same boat i was or worse, is it worth it.

Just run a full or near full tank or a surge tank, personally I am not a fan of external surge tanks with the return line from the engine going to it and heating the fuel in the surge tank up, my surge tank is welded on the tank and is gravity fed with the return going into the top of the tank on the opposite side from the pick up

Posted 15 January 2012 - 04:07 PM

R32 GTR - 293rwkw = 11.13 @ 123 mph

fastest 1/4 mile times on stock ceramic turbo

R34 GTR - 10.8 @ 132mph
SMSP-S - 1.04.6

built by me, tuned by Scott @ Insight motorsport

  • Gender:Male
  • Location:South Oz
  • Real Name:Stewy

What about mounting the surge under the car if you dont want to lose boot space?

makes the car vulnerable unfortunately, ok for 99.9% of cars, not for what this car sees.

Posted 15 January 2012 - 08:16 PM

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  • Gender:Male
  • Location:South Oz
  • Real Name:Stewy

Foam only slows down the movement of the fuel sloshing it does not prevent it at all.

If you drifting the vehicle the fast direction changes will allow the fuel to build up momentum then foam will be useless.
You need swinging baffles to prevent surge in those circumstances.
You have two simple options.

Run the tank close to full or an external surge tank.
In all my experience foam will not help sustained fuel sloshing.

thanks mate.

Posted 15 January 2012 - 08:17 PM

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  • Gender:Male
  • Location:Auckland New Zealand
  • Car(s):S1 WGNC34 Stagea RB30/25
  • Real Name:Bob

I had had the car 4 months and the guy I brought it off told me he had changed it about a year before i brought it, even so changing the foam is a shit job no matter how you look at it, even worse if you have to do it every year or so and if it does give up early you are in the same boat i was or worse, is it worth it.

Just run a full or near full tank or a surge tank, personally I am not a fan of external surge tanks with the return line from the engine going to it and heating the fuel in the surge tank up, my surge tank is welded on the tank and is gravity fed with the return going into the top of the tank on the opposite side from the pick up

So no lift pump? Sounds like a great set-up. Is the pump in the surge tank or external?

Posted 13 October 2012 - 03:55 AM


Stagea 1996 S1 RS4T :RB30/25  76mm turbo back exhaust -http://www.sincocustoms.co.nz/ high rise manifold, Garrett GT3540R, Synapse 50mm w/g, Walbro GSS 341 lift pump, Bosch 044 from surge tank, 550 DeatschWerks injectors, Hybrid fmic, Greddy copy FF plenum, Tomei sump baffle kit, Link G4 ecu.



Oil restrictors and crank collars for sale: http://www.skylinesa...-crank-collars/

 


  • Gender:Not Telling
  • Location:The junk yard
  • Car(s):BNR34,BNR32,ZX10R,RODEO,MU-X
  • Real Name:Mick
No lift pump, the surge tank is welded to the bottom of the main tank and gravity feed through a series of 8 ( if think ) 1/2" holes then twin Bosch external pumps

Posted 13 October 2012 - 02:24 PM

R32 GTR - 293rwkw = 11.13 @ 123 mph

fastest 1/4 mile times on stock ceramic turbo

R34 GTR - 10.8 @ 132mph
SMSP-S - 1.04.6

built by me, tuned by Scott @ Insight motorsport

  • Gender:Male
  • Location:Sydney
  • Car(s):RB28 97' V Spec Series 3
  • Real Name:Paul

I had had the car 4 months and the guy I brought it off told me he had changed it about a year before i brought it, even so changing the foam is a shit job no matter how you look at it, even worse if you have to do it every year or so and if it does give up early you are in the same boat i was or worse, is it worth it.

Just run a full or near full tank or a surge tank, personally I am not a fan of external surge tanks with the return line from the engine going to it and heating the fuel in the surge tank up, my surge tank is welded on the tank and is gravity fed with the return going into the top of the tank on the opposite side from the pick up

Fuel cooler FTW!

Posted 13 October 2012 - 08:36 PM


  • Gender:Male
  • Location:Melbourne
  • Car(s):R34 GT-T & VE SSV
  • Real Name:Herb
im gonna be running just a fuel cell with baffles and e85 foam in it and to be safe change it once a year.. running two external pump under the tank and also looking at maybe running a "fuel cooler" if i see temperatures creeping up too high..

i agree with XKLABA.. run a tank and be done with it... saves u a lot of time trying to get ur normal tank suit your needs..

just my 2cents anyway.. :)

Posted 16 October 2012 - 10:38 AM





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