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Author Topic: Acid cleaning a Tank with Bondo in it...?  (Read 1766 times)

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Offline cbjunkie

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Acid cleaning a Tank with Bondo in it...?
« on: January 01, 2006, 08:33:04 PM »
hey guys,
so i'm stripping the paint off of my Super Sport tank the other day - i was prepping it for a POR-15 acid bath and sealer coat - and lo and behold to my wondering eyes appeared a lacework of pinholes along the bottom edges of the tank...there are also some BB sized holes in the bottom of the tank...i had chunks of rusted metal coming out the fill hole... ::)

now, if i had a lick of sense i'd probably just pitch the tank. i bought it knowing it had rust, knowing that i'd have to strip, clean and seal it, but now the prospect of having to bondo the holes first is daunting me.

Question: does anyone know or have experience with the interaction of bondo with the cleaners and acids that are commonly used to eat the rust out of gastanks? Is the acid etch going to eat through the patches before i get a chance to seal them?

the prospect of buying another tank is not the worst thing in the world, but not exactly in the budget right now...

cbj...
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Offline Bob Wessner

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #1 on: January 01, 2006, 08:43:52 PM »
Just sent you another thought on this via PM.
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Offline bryanj

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #2 on: January 02, 2006, 05:31:55 AM »
Bondo WILL NOT seal propely holes in a tank
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Offline grumburg

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #3 on: January 02, 2006, 07:39:59 AM »
I have used J-B Weld with very good results
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Jughead

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #4 on: January 02, 2006, 09:23:57 AM »
The Only way to Properly Seal it is with Welding or Brazing.Since you said that there were Chuncks of Rust Coming out I would say that if it is that bad Ditch it and Buy Another tank.
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Offline cbjunkie

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #5 on: January 02, 2006, 07:34:21 PM »
okay - good info - depressing, but good...

next question,  - if i fill the holes with bondo and then seal the tank what's the problem? the bondo will not be exposed to the gasoline - is there something i'm missing, some reason this won't work?

i just spent most of the day dealing with this - it was a #$%*. i have the holes sealed and the tank de-rusted.
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1972 CB350 (deceased)

sometimes naked, sometimes mad -
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thus they appear on earth,
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Offline bryanj

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #6 on: January 03, 2006, 05:37:19 AM »
Dunno never tried it is the answer BUT aint going to either as i dont like the idea of an iminent fire under me nuts!!!
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

ElCheapo

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #7 on: January 03, 2006, 08:50:45 AM »
I think tanks are like wheels and tires. Never take a chance with them.
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Offline cbjunkie

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Re: Acid cleaning a Tank with Bondo in it...?
« Reply #8 on: January 03, 2006, 09:40:17 AM »
Il Heepo,
you don't have a SS tank lying around do you?
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1971 750K1
1972 CB350 (deceased)

sometimes naked, sometimes mad -
now the poet, now the fool -
thus they appear on earth,
the free men.
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