Tank linings - MVAgusta.net
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post #1 of 7 (permalink) Old 01-07-2011, 07:08 PM Thread Starter
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Tank linings

Hi guys

Thanks to Dorian's fine work, I now have a new tank for my 1974 350 GT. It is unpainted, but I have what remains of the original tank to work from for color and layout. I have the correct side decals, and based on earlier posts I should put the 37 star Campione del Mondo sticker on top of the tank. This time with a clear coat over it so it will last a bit.

So my question: Are there tank liners or treatments that are worth considering? I'm a lousy owner and keep leaving gas in the tank. My only excuse is that the bike is out in the country and I live in Chicago. I know I'll eventually think I can get in another ride before winter, then won't get back until spring. And this being farm country, we have 10% ethanol in the fuel, with some now arguing for 15%.

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post #2 of 7 (permalink) Old 01-08-2011, 04:57 PM
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i don't know if a tank liner in Germany is any help for you but at least here's the link.

A question for you: What did you do to get the inside of your tank back to decent state?


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post #3 of 7 (permalink) Old 01-08-2011, 05:53 PM
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These might be worth investigating:

Red-Kote in steel tanks.
Caswells Epoxy fuel tank sealer. www.caswellplating.com/aids/epoxygas.htm
EuroBrit (www.eurobrit.com.au) also have a sealer made in Tasmania suitable for steel and glass tanks

A representative from Shell in Australia gave a presentation to the Ducati club last year. In the presentation he commented that fuel has different composition (different addadtives) depending on the time of year (summer/winter) which effects it's performance, more so for carburettaed bikes.

He also said for bike storage the fuel tank should either be full or empty (can't remember the reasoning).

I make it a habit of running the carbies dry before parking the bike as I have been told that modern fuels can leave 'deposits' in carbies effecting the bikes performance. The deposits are related to the chemicals added to fuels to improve engine performance/econamy as a result of the removal of lead from fuel.
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post #4 of 7 (permalink) Old 01-08-2011, 09:30 PM Thread Starter
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I'll start researching those, looks interesting.

I haven't cleaned out the inside of the tank yet. I hope the tank treatment people will have some advice on that.

I wonder which is better - leaving a full tank vs an empty one. You'd think an empty one would be more likely to rust, and someplace I saw the suggestion to add some diesel to the empty tank, but that looks like trouble for the carbs later on. Maybe a spray of WD40? I think a full tank would be more likely to leak fuel past the shut off valves, plus the fuel may need to be replaced due to aging and whatever rust does take place.

Time for a heated garage or a bigger living room.
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post #5 of 7 (permalink) Old 01-09-2011, 12:51 AM
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I seem to recall if you run exhaust gasses from your car through an empty tank it removes all the petrol fumes. A welder should be able to verify this.

i also heard it was kero, not diesel, that you added to the petrol for storage (although it may have been turps). Again, someone should be able to verify one or the other possibilities.

as for garage or even a bigger living room ... I wish. I have no option but to store a few bikes in the living room.
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post #6 of 7 (permalink) Old 01-09-2011, 04:30 PM
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I have used a coating from a guy named Bill Hirsch (google that) in my metal tanks. In my opinion it's the best stuff out there, and I intend to coat the tanks on my 1098 and rs250 with it over the winter. The only thing I don't know is if it's Ethanol proof as it's an alchohol based formula.

I also use Star Tron additive when I gas up. So far so good with the plastic 1098 tank.
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post #7 of 7 (permalink) Old 01-09-2011, 08:23 PM
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I have used Caswell sealer on several motorcycles with no problems.
I first used Caswell to seal a new fiberglass tank to protect the paint from the fumes that seep thru the fiberglass.
I have used it on metal tanks to cover rust and on a custom metal tank to seal my welds.
All tanks used premix with pump gas (10% ethanol) or VP red race fuel.
I only drain fuel for the winter, but I was told to drain it after every ride.
Follow the instructions, mix ratio and tempature.

I never use WD-40 to prevent rust, being a penetrating oil and not a lubricant it is possible
that it will cause rust. Once your tank is coated you only need to drain it.
hope this helps,
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