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How in the world to get this tank liner removed 17 Feb 2021 08:35 #843593

  • OkieZ1000
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Greetings,

I noticed my carbs were getting dirty and so I changed the inline filter, but soon realized the tank liner was delaminated. I worked to remove as much as I could manually (see pics) and then dropped a chunk in Acetone to see how long I would need to soak the tank to melt what is unreachable. About 5 days in the Acetone and it had barely even colored the fluid!

Any ideas for getting "whatever this is" out of the tank?

Thanks
Scott
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How in the world to get this tank liner removed 17 Feb 2021 09:29 #843595

  • Nessism
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I've had good luck using heavy duty paint stripper. The stuff that requires mineral spirits to neutralize and wash clean. The water rinse paint strippers are much weaker. MEK is also worth a try. Realize that while the chemicals are working there will be an outgassing that occurs so make sure the tank is vented or it will blow up like a balloon and pooch out.

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How in the world to get this tank liner removed 17 Feb 2021 11:02 #843602

  • Mr. E
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I second the MEK as well. gloves and outside- rotate the tank to keep it on all surfaces, its going to gel up and get nasty. I usually find 3 rounds with washing between, While I do find that adding SS hardware to the tank helps, its also can be PITA to get all of it out.
1975 KZ400 , 1981 KZ750 stock, 1981 KZ750 Chopper, 1984 GPZ750 track build. 1977 kz1000, 1981 kz1000

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How in the world to get this tank liner removed 17 Feb 2021 11:45 #843605

  • Kidkawie
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MEK mixed with screws or chain will do it. Been there, done that. You'll want to setup some sort of strain/seive to reuse the MEK. I think I used two 1 gallon tins for one tank. It wont blow up. Plug the petcock, add about 4 cups and some chain, close tge cap and shake for a few minutes. Strain and repeat.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125

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How in the world to get this tank liner removed 17 Feb 2021 16:11 #843618

  • z1kzonly
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Real Auto Body Shop Lacquer Thinner, 5 Gal. pail. Fill it outside or in a garage. Just let tank sit full. Lacquer thinner is the universal solvent! I sniffed enough of these fumes the past 40 years! :laugh:
Livin in "CheektaVegas, NY
Still have a Kaw! 76 KZ900 Pro-Street.
Went thru 25 of these in 40 yrs.

And The Old Girl, Harley 75 FLH Electra Glide,
Old faithful! Points ign. Bendix Orig. carb.
Starts everytime!

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How in the world to get this tank liner removed 17 Feb 2021 17:20 #843620

  • ckahleer
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Do you have any way to heat it? I find solvents work much better hot than cold. I try to do this type of cleaning on hot summer days. I have considered using an aquarium heater in the winter, but haven't tried it yet.

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How in the world to get this tank liner removed 17 Feb 2021 19:11 #843627

  • Mikaw
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Acetone worked for me. My tank had sat for years with fuel in it and the sealer had delaminated from the tank and settled to the bottom. A few soaks and picking and scraping to get it all. Then a few days soak in apple cider vinegar to remove the rust. A hand full of sharp point screw and a few shakes on the last soak, and then a wd40 rinse to stop flash rust. Good as new.
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
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