making stock fuel tank better?

Been considering ways to make the stock fuel tank on the rx7 suck less. This GSLSE model tank has a removeable section so i have been considering making a sump and running in tank pumps.***

can i add foam perhaps?

the tank becomes worthless at about 1/4


*** i tried external pumps but the stock location is down low where 1) rocks are and 2) my links are. running them above the tank made vapor lock on hot days....

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First Rally: 2010 First RallyX: 2004 (a bunch)
Driver (0), Co-Driver (7)
Organizer (3), Volunteer (3)
Cars Built (2.5), Engines Blown (2) Cages Built (0) # of rotations (3.5)
Last Updated, Apr 9, 2023

have you thought about adding fuel cell foam?

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I would rather drive a slow car fast as a fast car slow!
first rule of cars: get what makes you happy, your the one paying for it!

Double check your rule book and talk to your local tech guy. It's better to be safe than sorry.

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Robert.

"You are way too normal to be on Rally Anarchy." Eddie Fiorelli.

Does the pickup sit inside a spiral baffle / swirl pot? If not, that might help when you're tossing the car around (if your system has a return line, dump it in the swirl pot)

http://bangshift.com/general-news/new-products/must-see-holley-just-changed-fuel-system-game-big-way/

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Runamuck Rally

That is freaking awesome! If this works like they say it does, it belongs in every single rally car and road racing tank. I wonder what fluid they used to mimic gasoline in the test booth?



Edited 1 time(s). Last edit at 12/13/2014 05:01PM by Robert Culbertson.

I'm guessing mineral spirits

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Runamuck Rally

Quote
Robert Culbertson
That is freaking awesome! If this works like they say it does, it belongs in every single rally car and road racing tank. I wonder what fluid they used to mimic gasoline in the test booth?

Very few rally cars I know that need something like this.

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Grant Hughes

Making every last drop of fuel in the tank useable is a strong argument for needing this device.

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Robert.

"You are way too normal to be on Rally Anarchy." Eddie Fiorelli.

And not sucking air, ever.

And I will assume that it works as a badass filter, so even if the fuel tank is half gravel by volume, the crap won't make it past the pickup.

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Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.

Quote
Rallymech
Making every last drop of fuel in the tank useable is a strong argument for needing this device.

Anymore the legs of a rally are so short that most cars barely burn through half a tank. Running less fuel to save weight is silly. So there are really only a small handful of cars that have a need.

There were quite a few other things at PRI that I found more interesting.

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Grant Hughes

I think dropping 40lbs out of a small NA car would be a great performance gain.

Quote
Robert Culbertson
I think dropping 40lbs out of a small NA car would be a great performance gain.

Diet for driver and codriver.

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"Talk about drugs. Driving a car like that, going that fast, it’s like all the drugs at once." - Tommy Byrne

"Now, Pinky, if by any chance you are captured during this mission, remember you are Gunther Heindriksen from Appenzell. You moved to Grindelwald to drive the cog train to Murren. Can you repeat that?" - The Brain

Or a good poop

I've had epic dumps but I don't think I've ever lost more than two pounds in one sitting. So to speak.

(I've never understood the "lose weight" mentality. For one, it assumes that everyone is overweight, and is insulting to those of us who've battled trying to not look like a skeleton their whole life. For another, it seems to absolve the need. I suppose if someone is overweight, they should just try to drive some 5500lb truck instead?)

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Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.