 914 Gas Tank condition, Is my tank OK? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Dugo16 |
 Aug 16 2024, 12:50 AM
Post
#1
|
|
Newbie  Group: Members Posts: 14 Joined: 14-July 03 From: East Bay, CA Member No.: 909 Region Association: None  |
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
 |
   |
 
|
  |
Replies
| Superhawk996 |
Aug 16 2024, 06:49 AM
Post
#2
|
|
914 Guru Group: Members Posts: 7,780 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
|
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. |
|
|
|
| bkrantz |
Aug 16 2024, 07:58 PM
Post
#3
|
|
914 Guru Group: Members Posts: 8,654 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains
|
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. |
|
|
|
Posts in this topic
Dugo16 914 Gas Tank condition Aug 16 2024, 12:50 AM
930cabman Welcome aboard
Has it been leaking? so far as the... Aug 16 2024, 04:51 AM mepstein You could splash some vinegar in there and then fi... Aug 16 2024, 05:28 AM
technicalninja If those are just surface discolorations that tank... Aug 16 2024, 07:39 AM rhodyguy Nice tank. Is that a brand new fuel filter sock? I... Aug 16 2024, 09:12 AM rjames A 3rd vote for POR Metal Ready. Easy to apply and ... Aug 16 2024, 09:25 AM
Dugo16 Thank you for all of the good info everyone, I app... Aug 17 2024, 12:54 AM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 15th April 2026 - 02:04 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.