C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 Fuel cell

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Old Aug 9, 2011 | 06:13 PM
  #21  
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When Jims car is leaving/accelerating I imagine the fuel is pushed up against the rear of the tank and held there, which could starve the pump unless he runs plenty of fuel.
This solves his issue/saves weight.

Every bit counts! Nice, Jim


Love to see a vid of your car in action sometime.
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Old Aug 9, 2011 | 07:40 PM
  #22  
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Originally Posted by Dr.Huxtable
Looks good Jim, I'm envious!

Question on the fuel starvation also. I don't really get why that happens. I installed a new fuel pump the other day. The pump sits in the middle of the tank and at the bottom. from what i saw. Maybe the way the OEM armature and stuff is angled it's more towards the front of the tank where i couldn't see once it was all in there.

There's also like a plastic tray in there where the pump and sock goes to to pick up the fuel. Wish i took a pic or two.
The stock sump is too shallow and allows the gas to move away from the pump. A real fuel cell has a deeper well and using foam blocks you can run minimum fuel without starvation problems.
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Old Aug 9, 2011 | 08:25 PM
  #23  
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Originally Posted by tpi 421 vette
No, a friend gave it to me and I had it modded to fit the car. I was really surprised how the size was about perfect for the car. I would say this is a solid 60lb+ weight reduction between the tank being lighter and carrying less fuel.

It has about 10 gallons of fuel capacity.
Some of the best racing parts are Free from friends.
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Old Aug 9, 2011 | 10:00 PM
  #24  
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Originally Posted by 383vett
Just curious, what would those be? On my 5 gallon cell, I can run to the last gallon without starvation.
i do not recommend any fuel cell/ fuel tank mod ... extreme danger of serious injury or death is present in storage/handling/using fuel.

have seen 'fuel cell foam block in zip-top baggie' herd stuffed inside a cell (some baggies dissolve in gas, some fail other ways, testing prior to use is a good)...another 'stuffer' inserted a 'tire inner tube' and then partially inflated the inner tube...there are other ways.

recently removed my oem c4 tank to do rear bumper mod...used stock pump to decant fuel until pump sang soprano/flow stopped, then removed tank to outdoor location and inverted/sloshed tank to remove residual fuel and/or contaminants to 1 gal container...exercised care to prevent spillage...'invert/slosh' done until nearly all fuel/junk was expelled and shop sponge was then utilized to remove all traces remaining,all liquid captured, only produced (to my amazement) approx ONE QUART of liquid.

btw, all the 'drainings' have since been used up by my lawnmower to satisfy question of whether the fuel would work, it ALL did, briggs never missed a beat.

Last edited by redrose; Aug 9, 2011 at 10:15 PM.
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Old Aug 9, 2011 | 10:21 PM
  #25  
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Ron, I have been bugging Jim for years for a video of the 450. I saw an older video, but the video quality wasnt there so it was hard to see.

Jim, I am thinking we are going to see some personal best next time out at the 1320. I hope the DA comes down for you, and you are able to go out in some decent air.

Goodjob on the fuel cell!!
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Old Aug 9, 2011 | 11:22 PM
  #26  
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Looks great Jim!

Hey Willie, do you have any pics of yours? I think Pat Hendrix would be pretty interested.
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Old Aug 10, 2011 | 12:31 AM
  #27  
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Originally Posted by Caboboy
Looks great Jim!

Hey Willie, do you have any pics of yours? I think Pat Hendrix would be pretty interested.
I don't want to hijack Jim's thread, but since we're buddies, I'm sure he won't mind. My cell is 5 gallons since this is a dedicated strip car with no street time. You will notice the dropped sump which drains pretty much all the gas from the cell. Say "Hi" to Pat for me. He's a good man. Willie







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Old Aug 10, 2011 | 12:49 AM
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Looks good Willie. I thought about sumping mine, but thought I would just try a drain hole in the bottom at the back of the tank. So far I tried it a little on the street with about 2 1/2 gallons and it was fine, no fuel starvation. I will have to see how it works out at the track.
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Old Aug 10, 2011 | 11:27 AM
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Heck Jim, you could fill that thing up to the top and more and you'd still have to spot me 5 carlengths. Your car is a monster.
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