1. Hello there guest and Welcome to The #1 Classic Mustang forum!
    To gain full access you must Register. Registration is free and it takes only a few moments to complete.
    Already a member? Login here then!

What are these holes for?

Discussion in 'General Mustang Discussion' started by jcs67stang, Jul 7, 2018.

  1. jcs67stang

    jcs67stang New Member

    Greetings,

    Weather is finally cool enough that I can work on my '67 without risking heatstroke! Thought I'd swap out the tank with the new EFI tank. As I was uninstalling the existing tank I noticed 4 holes at the front edge of the tank...thinking "now why didn't the shop fill those?" It wasn't until I removed the tank that I realized these look like bolt holes for something...thing is I have no idea what these would be for. Why would they be half under the tank lip and half exposed? Doesn't make sense to me, and I don't want to leave holes in the floor. Any ideas?
    Mystery Holes.jpg
     
  2. JeffTepper

    JeffTepper Well-Known Member

  3. jcs67stang

    jcs67stang New Member

    Yep, that looks about right, I think we have a winner. Once again I am wondering WTH regarding the shop, why didn't they call this out or just go ahead and fill them in? And once again I find myself wishing I knew how to weld. Crap.

    Now what do I do...duct tape? Bubble gum? Gobs of silicone? Oh I know, "Flex Tape" as seen on TV. Maybe I can leverage the holes and turn them into fresh air vents for the trunk? Anyone in St. Louis area up for a little welding clinic?
     
  4. Horseplay

    Horseplay I Don't Care. Do you?

    Not a big deal at all. I know you were kidding about the FlexSeal but that is right along the path I would take. No one is going to see that area anyway so the only concern is to seal them up so no water gets up in there. You can either get appropriate size plastic hole plugs (hardware store) and use either seam sealer or something similar to secure them in place and make them watertight. I wouldn't use silicone type sealer as it doesn't have the longevity you want. In all honesty, a couple pieces of FlexTape would be a good solution all by itself. Full disclosure, I work for the company that makes that product. ;)
     
  5. tarafied1

    tarafied1 Well-Known Member

    or just put some bolts in there with washers and tighten them up. (I have a hitch for a 67 Mustang if you want to bolt it up! lol)
     
  6. jcs67stang

    jcs67stang New Member

    [QUOTE="... In all honesty, a couple pieces of FlexTape would be a good solution all by itself. Full disclosure, I work for the company that makes that product. ;)[/QUOTE]

    You sir are disqualified! :)

    You make a good point, this is not a structural issue, mainly I'm concerned about water. Not sold on the tape idear though...no offense but I've read that stuff doesn't stick real well unless the surface is perfectly flat, perfectly clean, perfectly smooth, and completely dry.
     
  7. jcs67stang

    jcs67stang New Member

    Nice, and I can use some of the strip caulk from the tank installation to seal it up underneath. But, given that these holes are conveniently located half under the edge of the tank (other half of the holes are exposed) I'm not sure how I could fit the bolt under the tank lip, looks like I'll have to install the tank first then try and force the bolts through the half-holes. Yep, I said half-holes. Better than what I want to call the shop that left these damn things behind.

    You know, after some serious consideration I think I'll pass on the hitch, not quite the look I was going for haha.
     
    tarafied1 likes this.
  8. tarafied1

    tarafied1 Well-Known Member

    I understand (all of it). I didn't like the hitch either and I see after looking better at your pics the half-holes you speak of. The shop must have been in a hurry, they were half-fast... :(
     
  9. Horseplay

    Horseplay I Don't Care. Do you?

    You sir are disqualified! :)

    You make a good point, this is not a structural issue, mainly I'm concerned about water. Not sold on the tape idear though...no offense but I've read that stuff doesn't stick real well unless the surface is perfectly flat, perfectly clean, perfectly smooth, and completely dry.[/QUOTE]
    We make a bazillion different products mainly adhesive type stuff. We make the Flex stuff on contract, it's not our own development. That said, I can tell you it is the stickiest stuff you'll ever deal with. We had to do all kinds of modifications on our production equipment to produce it. Brush away any loose stuff and it will stick.

    Myself, I used a couple plugs and seam sealer for some factory holes I didn't need to use but didn't want to weld up.
     

Share This Page