Topic: How do I plug my fiberglass tank?

[ksmith0034]

My original Dunstall fiberglass tank has mountings for two petcocks.  But I can only use the left one due to carb clearance issues on the right.  Here's my question:  how do I safely and securely plug the other petcock holes?  (I have ZERO fiberglass experience!)

[chimmychong86]

I'll take pictures of mine when i stop by my garage tonight.  Mine looks pretty darn stock and from what i remebember all they did was a piece of flat metal two nuts/screws and some rubber.

[Spiider]

^^^That's exactly what they did on my Dunstall.

The other side is a bit of a cludge job though.
I'd like to fix it then cut it again to mount a stock petcock there.

Fibreglass repair kit?

[ksmith0034]

I may have to plug both mounts and make a new one - there just isn't much room down there!  Ugh!

[chimmychong86]

Sorry it took so long, busy time of the year and what not. Here's what i have covering up the one side. I tried taking of the metal piece to see what it looked like on the other side, however it seemed stuck in there pretty good.

[ksmith0034]

Cool.  I guess the most important thing is to make sure the rubber can withstand the gas.

[chimmychong86]

If you've already coated it i think Nitrile Rubber would be a good solution. If you havent coated it then you could use some kind of hondabond to cover it and put the coating in.  But then again I'm fairly new to this stuff and only have ideas.

[Retro Rocket]

If you don't plan on using the 2nd set of holes again just get yourself some fuel resistant epoxy and glue them up.....

Mick

[Fritz]

If you don't plan on using the 2nd set of holes again just get yourself some fuel resistant epoxy and glue them up.....

That would be sufficient to plug the holes. But you should sand them clean and add chamfers.
If you want to make it perfect, sand down about 0.1"/2.5mm, patch with epoxy and fibre, sand flat and paint with topcoat. Sand again with fine grid and polish. Nobody will notice the repair afterwards.