 914 Gas Tank condition, Is my tank OK? |
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| Dugo16 |
 Aug 16 2024, 12:50 AM
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#1
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Newbie  Group: Members Posts: 7 Joined: 14-July 03 From: Campbell, CA Member No.: 909  |
How does the inside of my gas tank look to you guys? Do I need to clean and seal it or leave it as is? Thanks, Doug
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| 930cabman |
Aug 16 2024, 04:51 AM
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#2
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Advanced Member Group: Members Posts: 4,070 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States 
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Welcome aboard
Has it been leaking? so far as the cleanliness, I would make sure to have a couple inline filters and change them often. |
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| mepstein |
Aug 16 2024, 05:28 AM
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#3
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914-6 GT in waiting Group: Members Posts: 19,876 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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You could splash some vinegar in there and then fill it with gas. Factory never coated the steel. Just bare metal.
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| Superhawk996 |
Aug 16 2024, 06:49 AM
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#4
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914 Guru Group: Members Posts: 7,028 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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Never seal gas tanks, that (IMG:style_emoticons/default/stromberg.gif) eventually flakes off and then you’ll really be hating life. If it needs to be sealed, it needs to be replaced.
POR metal prep was what I used on mine. It’s phosphoric acid (removes the surface rust) with a zinc additive in it that helps reduce the flash rusting (yellow rust) when drying and leaves a light zinc coating that helps prevent future surface rust. https://por15.com/a/s/products/metal-prep To reiterate, you couldn’t pay me to use POR or anyone else’s tank sealer. Marks suggestion of Vinegar is cheaper and will work - just a bit slower than Phosphoric acid. Reverse electrolysis also works great but literally can take multiple days and cleanings of the electrode. |
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| technicalninja |
Aug 16 2024, 07:39 AM
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#5
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Advanced Member Group: Members Posts: 2,531 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region
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If those are just surface discolorations that tank is one of the cleanest old tanks I've seen.
Now, I second the use of Metal Ready (What Superhawk996 suggested). If that sock is old, I'd replace it. It looks old. Overall, your tank looks about "as good as it gets" in the "old tank competition". I'd do a little more cleaning but what you have looks "Ready to go" in my book. You got lucky!!! New tanks are cheap but yours looks reusable... |
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| rhodyguy |
Aug 16 2024, 09:12 AM
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#6
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,240 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Nice tank. Is that a brand new fuel filter sock? If not, put one in.
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| rjames |
Aug 16 2024, 09:25 AM
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#7
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I'm made of metal Group: Members Posts: 4,245 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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A 3rd vote for POR Metal Ready. Easy to apply and doesn't take much of the product to complete the job. Pour it in the tank and splash it around to coat all surfaces. Wait 15 minutes then rinse well with warm water.
Last year I also used it on a bumper after I stripped it completely of paint. It's been sitting bare metal for months in the open air and not a trace of rust. |
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| bkrantz |
Aug 16 2024, 07:58 PM
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#8
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914 Guru Group: Members Posts: 8,360 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains
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QUOTE(Superhawk996 @ Aug 16 2024, 06:49 AM)  Never seal gas tanks, that (IMG:style_emoticons/default/stromberg.gif) eventually flakes off and then you’ll really be hating life. If it needs to be sealed, it needs to be replaced. POR metal prep was what I used on mine. It’s phosphoric acid (removes the surface rust) with a zinc additive in it that helps reduce the flash rusting (yellow rust) when drying and leaves a light zinc coating that helps prevent future surface rust. https://por15.com/a/s/products/metal-prep To reiterate, you couldn’t pay me to use POR or anyone else’s tank sealer. Marks suggestion of Vinegar is cheaper and will work - just a bit slower than Phosphoric acid. Reverse electrolysis also works great but literally can take multiple days and cleanings of the electrode. I agree, I found an old fashioned shop in Tucson to "boil out" my tank (really just a very caustic fluid bath). Those guys were VERY clear. A new or cleaned out tank does not need coating, and should never be coated. You can also use muriatic acid to dissolve rust and crud. But be very careful if you see any rust, inside or especially on the outer surface, that the tank metal has weakened or even could leak. |
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| Dugo16 |
Aug 17 2024, 12:54 AM
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#9
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Newbie Group: Members Posts: 7 Joined: 14-July 03 From: Campbell, CA Member No.: 909 |
Thank you for all of the good info everyone, I appreciate it.
I know I will have more questions for you guys as my 914 hasn’t been driven in 18 years! |
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