POR-15 tank liner cans are a one-shot thing. What I mean is, once you open the can, you have to use all of it. There's no sealing it up for another day. So naturally my next question is how many tanks can I do with one can. I think I pretty well answered that. If you look at the faq at por15.com it says 8 ounces will do a six-gallon tank. Well, motorcycle tanks are somewhat smaller than that, unless you have something huge like a Goldwing. (Also, Goldwings have screens inside them, so don't even think of lining them.)
Another thing I like to do is pour the can into a yogurt cup and stir stir stir. the chunks like to sit on the bottom of the can, so this makes it easier to get everything mixed. Plus it's easier to pour than the can.
For my test, I had purchased a POR15 motorcycle tank kit like this one. It came with an 8-oz can of liner, and I was able to line two Puch Compact tanks, a Honda CA95 tank and one Honda S65 tank. They are all about 1.5 to 2.5 gallon tanks. Later I lined a CL160 tank with a 4-oz can.
First step is to seal up the tank. You can see the assortment of stuff I used to accomplish this. Mostly it was some gasket material, some aluminum flashing, fuel hoses, hose clamps, and bolts. I also used black rtv on the gaskets for extra sealing. For the top of the tank, I used the original cap with a piece of duct tape over the vent hole.
I bought this kit, then let it sit for a year or two. As you can see, moisture seeped in and made the lid impossible to get off.
Got a little shaky with the paint on this one:
I like to drain the tanks to dry in an upside-down manner. The propane tank is a good way to get them situated just-so.
I like the silver coating it gives the inside
These three tanks I was able to line with just one 8-oz can of sealer. Toward the end, it was getting pretty sparse. In order to avoid bare spots on the hump like they ran across in the review at Rider Magazine, I first angled the tanks up and used a funnel so the coating flows down the length of the hump, then flows to each side.
Puch Compact tank:
S65 tank:
Gloves, paper towels, trash, etc.
Nice coverage in the CL160 tank:
PITMFA:
I had a 4-oz can of black POR15 that I used in the CL160. I like the silver stuff better because you can see where it covers.
Once it dries, you can pretty much just peel it out of any plastic funnels or cups.
This is to show how it won't dry well if it puddles.
This is a shot of the rusty, crusty insides of my tank. I forget which one, but I think it's the CL160.
Funnel, beer, gloves, patience. Oh, and don't do this on the deck. I'll never get that shit off the wood.
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