gas tank questions

[deuceman51]

What are the gas tanks on the m211 made of? Is it stainless steel or just galvanized steel? I have a small hole that I need to weld shut and need to know what it is for sure. How have you guys cleaned your tanks out? mine has light rust from old varnished gas in it. I've cleaned twice with muratic acid and was wondering if that is enough or do I need to line the tank or treat with something to prevent further rusting? Thanks.

 

[n1bnc]

How big is the hole? Check the metal with a magnet. If the hole is small enough, JB weld??

 

[M543A2]

My tanks were all galvanized steel. I have welded a lot of cleaned tanks with no problem, but there is always a risk factor. My method is to have an air hose in the tank blowing in a good amount of air as I weld. This prevents there being enough concentration of fumes at any one time to be a problem. With today's litigous society, I am only saying what method I use, not telling you to use it. I have had very good luck with a good two part epoxy and fiberglass cloth if the hole is not too big. clean the surface by sanding, put down a layer of epoxy, cover with a layer of cloth, put on another layer of epoxy. Napa has a good tank repair kit that has epoxy and cloth for small areas. I would recommend also buying and putting in the internal tank coating that stops rust, seals leaks if not too big, and keeps the rust out of your fuel line.