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making stock fuel tank better?

Posted by Gravity Fed 
Gravity Fed
Alex Staidle
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1978 Mazda Rx7



making stock fuel tank better?
December 08, 2014 09:43PM
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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tdrrally
edward mucklow
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Re: making stock fuel tank better?
December 09, 2014 07:12AM
have you thought about adding fuel cell foam?



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Rallymech
Robert Gobright
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Re: making stock fuel tank better?
December 09, 2014 10:30AM
Double check your rule book and talk to your local tech guy. It's better to be safe than sorry.



Robert.

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corax
Keith Fritzinger
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Location: Portland, OR
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Re: making stock fuel tank better?
December 09, 2014 11:47AM
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)
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Towona
Tony P
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Re: making stock fuel tank better?
December 12, 2014 05:12PM
Robert Culbertson
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Re: making stock fuel tank better?
December 12, 2014 05:47PM
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.
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Towona
Tony P
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Re: making stock fuel tank better?
December 12, 2014 09:51PM
I'm guessing mineral spirits



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NoCoast
Grant Hughes
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Re: making stock fuel tank better?
December 14, 2014 09:26AM
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.



Grant Hughes
http://rally.build
Denver, CO
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Rallymech
Robert Gobright
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Re: making stock fuel tank better?
December 14, 2014 10:38AM
Making every last drop of fuel in the tank useable is a strong argument for needing this device.



Robert.

"You are way too normal to be on Rally Anarchy." Eddie Fiorelli.
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Pete
Pete Remner
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Re: making stock fuel tank better?
December 14, 2014 11:15AM
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.



Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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NoCoast
Grant Hughes
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Re: making stock fuel tank better?
December 14, 2014 01:33PM
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.



Grant Hughes
http://rally.build
Denver, CO
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Robert Culbertson
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Re: making stock fuel tank better?
December 14, 2014 07:31PM
I think dropping 40lbs out of a small NA car would be a great performance gain.
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wvonkessler
Wilson von Kessler
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Re: making stock fuel tank better?
December 14, 2014 07:34PM
Quote
Robert Culbertson
I think dropping 40lbs out of a small NA car would be a great performance gain.

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Robert Culbertson
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Re: making stock fuel tank better?
December 14, 2014 08:05PM
Or a good poop
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Pete
Pete Remner
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Re: making stock fuel tank better?
December 14, 2014 09:18PM
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?)



Pete Remner
Cleveland, Ohio

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