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Author Topic:   fuel cell foam
crc1124
Dirt Maniac

Total posts: 143
posted August 27, 2004 10:41 PM  
I have 2 questions regarding my fuel cell.
1. My foam in my fuel cell seems to be falling apart. I found out the hard way when my carb started acting up. Stupid **** clogged my carb and ruined my accelerator pump. How can I prevent this and where do I get good foam to replace the old. And yes I do run a fuel filter ( fram with replaceable element) it was clogged as well.
2. Where should my pickup hose be located inside my fuel cell. RT rear or Lt front. Mine is currently in the right rear.

iowatoolman
Dirt Freak

Total posts: 369
posted August 27, 2004 11:53 PM  
i have heard not to use the foam because it falls apart. so there for i do not use it
and the rt rear corner sounds right but check with the other guys running circle track because i run figure 8's.........
(yea i am $#%&$%^%&* crazy)

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 28, 2004 12:33 AM  
the foam manufactures say that you are suppost to drain your fuel cell after each use so that the foam doesn't break down, but who does that? at least let it sit dry over the winter mabye, I havn't had this problem yet but a buddy of mine his clogged everything up too.

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GO FAST, EAT DIRT, LIVE RACING

jonr
Dirt Roller

Total posts: 19
posted August 28, 2004 08:17 AM  
Almost any of the big suppliers will have foam block replacements. I forget the price, but it is pretty reasonable. I change my foam out every couple of years. Just be sure to check your fuel filter right after you change the foam to make sure you have no particles.

I know of several guys that remove the foam, but I always question why they think they are smarter than the engineers that designed the product. The foam was put there to help with the saftey of the cell. Why take the risk and remove it. It is just another off-season maintenence issue.

0six
Dirt Full Roller

Total posts: 52
posted August 28, 2004 08:35 AM  
I read somewhere that it is recommended that you replace the foam every six months, around here it is 6 dollars a block.

crc1124
Dirt Maniac

Total posts: 143
posted August 29, 2004 01:34 AM  
Thanks for the replies. With it coming to the end of the season I think I'm going to leave it out and decided whether to replace it next season. I'm going to see how I like running without it the last 3 races that we have left.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted August 29, 2004 07:51 AM  
On our LM was cannot use it because of the alcky. When we scale the car, after an adjustment we have to wait about 1-3 minutes for the fuel to stop moving around for the numbers to stabilize. After 2 weeks we could see the fuel cell can bulging on the right side where the fuel was slamming into the cell and bending the can.

Raz_900
Dirt Forum Champ
Total posts: 635
posted August 29, 2004 04:52 PM  
I think the foam is only supposed to last 3 years. After that, you risk it coming apart.

The real reason for the foam is to prevent an explosion when the cell is part way empty. The foam cells would promote a slow burn rather than the cell flat exploding. The slosh control is just secondary benefit.

Personally, I'm always going to run it. God forbid I ever get blasted hard enough to contact the cell, but I'd rather it just burn than explode. Not looking forward to not only being burnt, but also impaled with cell fragments.


jay116
Dirt Freak

Total posts: 428
posted August 29, 2004 07:25 PM  
I remove the foam, and cut 3" thin wall pvc pipe aprox 1" shorter than fuel cell is tall. Then notch the botom of the pvc ( 2" hole saw ) Then insert into cell and slide into corner. Repete untill full. Watch the pickup line. Works great last forever, gas or alky.

iowatoolman
Dirt Freak

Total posts: 369
posted August 31, 2004 04:37 PM  
that sounds like a good idea

thanks for the tip

drive hard or drive home

waltonjr1
Dirt Forum Champ
Total posts: 516
posted August 31, 2004 05:53 PM  
The foam is for saftey reasons, the foam soaks most of the fuel up incase the cell ruptures. I dont think its very smart to re design professionaly engineered saftey equiptment. If your worried about the foam breaking down just replace it every 6 months. It will cost you 20 bucks total and you will be alot safer. JMO


zeroracing
Dirt Forum Champ
Total posts: 1875
posted August 31, 2004 08:27 PM  
how is it going to hold fuel if the cell is compressed, it will leak jsut as fast, some racing fuel will eat new foam up fast.

waltonjr1
Dirt Forum Champ
Total posts: 516
posted August 31, 2004 09:02 PM  

[This message has been edited by waltonjr1 (edited August 31, 2004).]

crc1124
Dirt Maniac

Total posts: 143
posted August 31, 2004 10:07 PM  
WaltonJR1 point well taken. 20 bukcs a season isn't worth the possibility of what could happen, especially at our track.
Thanks!

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted September 15, 2004 10:20 AM  
I dont know where you are going to find foam for 20$. Earlier this year i bought foam to fill our cell and it was 8$ a stick and would take like 16 pieces to fill our 32 cell 3/4 full for a total of 128$.

I look at the foam for more of a fuel slosh problem. Because even if the bladder is ruptured the fuel will run out even with the foam. The foam is not like a sponge it lets fuel flow through it it wont soak it up and hold it. Otherwise it would soak up the fuel and you would never get any to your engine.

[This message has been edited by dirtbuster (edited September 15, 2004).]

bobaluuu
Dirt Freak

Total posts: 474
posted September 16, 2004 08:02 PM  
cell foam is designed to slow the flow and inhibit movement and as explosion control.
I dont know about you guys but I have a shed full of stuff I bought and we didnt like its performance or we have up graded or outdated it. So I figure that my backside is worth whatever it cost. Any one who wants to claim that coke bottles or plastic pipe or any other insert is acceptable are probably the same ones who wear a 5 year old 80 dollar suit or strap in with 3 year old belts. You are unsafe and endanger the lives of other racers. I say it again "Wake up, race cars kill someone everymonth in this country".

iowatoolman
Dirt Freak

Total posts: 369
posted September 16, 2004 09:02 PM  
racecars don't kill people stupid people kill people

if your stupid enough to use inferior equipment then you deserve to suffer but don't make anyone else suffer

drive hard or drive home

safety is the most important to my team
i drive figure 8's

    

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