Author Topic: Fuel tank, leaks  (Read 387 times)

Offline tcoupekyle

  • Full Member
  • ***
  • Posts: 228
    • View Profile
  • Your Best Time: 4.70 1/8
  • Your Track: Houston Motorsport park
  • Your Vehicle: 225" slip joint FED
  • General Location: Houston
Fuel tank, leaks
« on: September 26, 2021, 04:00:41 PM »
So I been having a leak in my fuel tank. I thought it was just from the breather at first but appears to be seeping from a weld. Should I have the tank welded? Or is there a magic chemical solution now?
I polished said tank today too.

https://photos.app.goo.gl/7q21nTRcfFaV1wSo6

Offline THE FRENCHTOWN FLYER

  • Sr. Member
  • ****
  • Posts: 306
    • View Profile
  • Your Best Time: 8.28@168 door; 9.00@147 6-cyl alt; 8.53@160 RED
  • Your Engine: 300 Ford six NA w/ crossflow and prod. heads
  • Your Track: Milan, Thompson
  • Your Vehicle: (3) Advanced Chassis altered , The Last Logghe altered, '30 RPU
  • General Location: North Coast
Re: Fuel tank, leaks
« Reply #1 on: September 26, 2021, 04:07:06 PM »
Welding on a used gas tank can be problematic. Flammable fumes can linger.
At Ford R&E the techs would steam clean a tank before welding on it. Often sensors and fittings needed to be added.
I would also recommend a back shielding gas be piped into the tank during the welding process.

Offline tcoupekyle

  • Full Member
  • ***
  • Posts: 228
    • View Profile
  • Your Best Time: 4.70 1/8
  • Your Track: Houston Motorsport park
  • Your Vehicle: 225" slip joint FED
  • General Location: Houston
Re: Fuel tank, leaks
« Reply #2 on: September 26, 2021, 04:18:49 PM »
For sure on that. I've had to weld some motorcycle tanks before with an argon Purge. But I don't weld aluminum and was really hoping there was an epoxy or something that would hold up.

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1704
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
Re: Fuel tank, leaks
« Reply #3 on: September 26, 2021, 06:26:46 PM »
Tip I learned on welding tanks,mainly gas tanks on Harleys. Wash them out good.Fill them half full and roll the over where you are not welding. Done this half dozen times and never issue. I have welded on block and had fumes in oil blow a brand new mag. valve cover off in pieces.  For a quick fix I carry a epoxy tank repair that is two part epoxy almost clay like.You mash them totehr and apply to tanl.Has always worked even when tank was dripping when applied. Can not remember name I get it at most any parts store.It is black and gray in roll about 3/4" and mayb e 2 -1/2 long. Only 8 or 10 bucks and worth a try.
« Last Edit: September 26, 2021, 06:28:55 PM by wideopen231 »
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot