Home made gas tank???

After spending over $300 on two different gas tanks that ended being wrong for the car, I've decided to do what I should have done in the begining."Build my own!"
Now I recently saw Kartbreaker's tank. He used a 12 gallon air tank. I liked that idea. But I'd like to go with something more in the larger gallon MOON tank size.
My idea is to use 10" dia steel pipe at about 32"-34" long.
But today at the s**** yard I ran across a **** load of liquid nitrogen tanks. They were about 8"-8 1/2" dia and about 24" long. I figure I could cut 2 in half and make a larger tank w/rounded ends on both sides.
Ok, here's the question.
Has any one used liquid or gas cylynders before?
Are there any hazards with putting gasoline in these types of metal containers?
I will probably coat the inside with tank sealer.
What do you think?

 

Here we have stainless steel LPG tanks for cars that are perfect for bigger moon style tanks,Im using an alloy tank from a zenith STOL plane of all things,leftover from my dads aircraft.
I dont see a problem with using the tanks you mention,just watch for internal corrosion.perhaps you should farm out the cutting to a boilermaker, sparks+nitro=boooom

 

Low,
The tanks are empty of course. But is there a possibility of residue causing a boom?
What should I wash them out with to get rid of the risidual
particles? Or should I not even worry about it?

 

So long as you coat it well.

Since you are going to have it in two pieces, I would find a way to put some baffles in it too.
TZ

 

Yea FLT,
I was thinkin about that too.
Where should I place the outlet to reduce fuel starvation?

 

Ever see 20 Gallon Stainless Steel Milk containers! Might be able to find slightly dented or used ones "cheap!"

Mark

 

That's actually a pretty good idea Mark.
I think my grandma has a bunch of those.
I'll have to check the diamtr.
Not much room between seat and back of car.
I really dig the thinner look of tanks but that is a great idea!

 

Phantom,
When I made mine I used a piece of fuel line into the tank, it lays on the bottom front corner.
Without a sump the best you can do is get it at the bottom.

TZ

 

Thanks FLT.
Anybody else have words of wisdom regarding cylinder tanks?

 

8 1/2" by 24" tank will hold 5.8 gallons.

8.5 x 8.5 x .7854 x 24 equals cubic inch displacement.
Divide by a constant of 231 to get gallons.

Give some thought as to where you're putting the tank vis a vis collision safety.

 

Nitrogen is not flammable.

Something else to look at would be finding a Union Heating and Cooling Shop. Most Union Shops do all their own fabrication and could easily Roll your cylinder in any size/material that you want. They would also be able to roll Beads into it to stiffen it and make it look cool.

Use a short 2" threaded Pipe ****** and cap for your filler neck. You can get threaded ******s and Caps in Stainless and Aluminum from McMaster-Carr, or your local Plumbing supply company. The cap can be chucked in a lathe and turned smooth or knurled.