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TOPIC: Fuel tank sealer

Fuel tank sealer 14 Jan 2020 16:10 #817079

  • Bulletkz
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I am getting my tank ready for paint and can't decide if I want to do the sealer coating.
I just had bad luck with kbs sealer in my original tank that was pretty rusty inside.
I did everything correct but it ended up rusting under the coating and peeling off.
I have had seen other tanks with different brands peeling off too.
The new tank had very little rust so I flushed it with rust removal gel and cleaned it with acetone.
Now it's like new.
I have cream sealer and Eastwood sealer sitting on the shelf but I'm afraid to seal it , especially a rust free tank.

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Fuel tank sealer 14 Jan 2020 16:16 #817080

  • 650ed
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I would suggest if the tank is in good shape that you NOT seal it. My 1977 tank is original and has never had any sealant put in it (I bought my bike new in 1977). As long as one keeps fuel in the tank I believe it will never rust. The problem seems to occur when the tank is left empty and moisture accumulates in it. If your tank is not rusty I don't think it will ever rust as long as you keep fuel in it. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Fuel tank sealer 14 Jan 2020 16:40 #817082

  • Nessism
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Agree with Ed; no sealer. You might want to use a mirror and flashlight and look all over the inside of the tank to be sure there is no hidden rust. If there is phosphoric acid is what a lot of pro's use to derust and it works great.
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Fuel tank sealer 14 Jan 2020 17:22 #817085

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I removed whatever rust that was in it with rust remover gel and flushed it out with acetone.
I checked a cool led light and mirror.
It's like new now. Just want it to stay that way.

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Fuel tank sealer 14 Jan 2020 17:27 #817086

  • ThatGPzGuy
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I agree with the others. Don't seal it unless you have to. I've used sealer on tanks where the paint was more than the entire bike just for insurance.
If you must, use a two part sealer like Caswell.
Jim
Atlanta, GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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