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  #1  
Old 07-18-2018, 06:43 PM
Neto Neto is offline
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Default Gas tank to floor pan

Not sure I really have the nerve to post something here in the Tech Tips, but don't know where else this might go.

I was loading up a bunch of scrap yesterday, and this morning I thought I'd better cut the old gasoline tank open, because I'd heard that they won't take a complete one. (This one has been open & setting for over 6 years, so there's no way it was going to explode, but sure enough, I over heard the guy at the scales calling someone about if they can accept them. When I told him that I'd cut it in half, he was cool.)

Anyway, when I got it open I immediately thought "This looks awful much like a floor pan." It already has the curved corners, so you could drop it down easily. I didn't keep this one, because not only do I not have space (and don't foresee needing one), but while the inside looks like new, the outside is badly rusted. This is off of a 93 Chrysler T & C minivan. Here in the rust-belt you would have to either get one from a fairly new (wrecked) vehicle, or go outside this area. (You can see which is the top by the fuel gauge hole.)
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Old 07-18-2018, 09:31 PM
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Old Iron Old Iron is offline
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Looks like that should work really good!!!!!!!!!!!!!
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Old 07-18-2018, 11:48 PM
patina patina is offline
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You got to be some careful cutting that lol
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Old 07-19-2018, 08:01 AM
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Since you are just cutting it open, filling it with water and using a recip-saw or even cuttoff wheel would be alright wouldn't it? as long as you stayed below the water line? Then trim it up after you crack it open.
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Old 07-19-2018, 08:10 AM
Neto Neto is offline
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Quote:
Originally Posted by Sam_Fear View Post
Since you are just cutting it open, filling it with water and using a recip-saw or even cuttoff wheel would be alright wouldn't it? as long as you stayed below the water line? Then trim it up after you crack it open.
That's what I would have done if I was opening it up soon after removing it. But in this case, it had sat in my shop for 6 years or more with the gas gauge out, so it was open, both there, and also at the filler neck. There was no gasoline smell left. (I used a saws-all.)
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Old 07-19-2018, 11:03 AM
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I cut up the gas tank out of my S10 donor truck to make my transmission cover. It already had rust holes in it from rain water, so I figured it was safe to slice up. Fortunately I was right.
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Old 07-23-2018, 03:57 AM
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Very cool idea I like that a lot !!!

a good decent squirt from a CO2 extinguisher is what I used to use before welding repaired motorcycle fuel tanks.. or run a car exhaust in them for 20 mins, water and volts don't go quite so well/
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Old 07-23-2018, 04:23 AM
dutch dutch is offline
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I do bike tank repairs / customizing pretty often, and usually fill em with water and soap ,shake it a bit and flush it out. I leave it like that when tanks have not been used for a long time or maybe stick in a torch if I don`t trust it. Tanks which have been used shortly before, I wash and hook up the argon bottle before cutting.
I don`t touch modern tanks full of pipes and secret chambers tho. I`ve done a lot of tanks but they still get my adrenalin going.

drilling a hole and useing a nibbler should work fine on a car tank imo
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