Tank Liner

Discussion in 'Airheads' started by tlux, Mar 20, 2012.

  1. tlux

    tlux Adventurer

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    Hey Guys

    In the next few weeks I will be painting the body work on my 1976 R90/6. While I have the current crappy paint, I have been advised to go ahead and reline/coat the inside, which makes sense. The process can get messy and I would hate to mess up my new paint in the future. However, I am not having problems with rust or the factory liner. So, do you think I should do the "preventative maintenance"? or "if it ain't broke, don't fix it"? If you recommend that I do it, what should I use? POR-15? Redcote? etc.

    Thanks
    #1
  2. kantuckid

    kantuckid Long timer

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    No to Kreem! Yes to Por-15! If you decide to do it, but why if there's no rust? Keeping it full will avoid issues...my suggestion is to look inside with a device...
    #2
  3. Unstable Rider

    Unstable Rider Moto Fartografist

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    What ever you do, if you coat it, do it BEFORE you have the exterior painted.

    +1 for RedKot.

    Do not use KREME
    #3
  4. Crazy_Dave

    Crazy_Dave Back'in it in

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    Por-15
    #4
  5. SpeedwayRN

    SpeedwayRN Go Spies!

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    Caswell
    #5
  6. squiffynimrod

    squiffynimrod maximum shrinkage

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    Use the POR, or else we'll ignore.
    #6
  7. wirewrkr

    wirewrkr the thread-killer

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    Why are you relining if the original is fine?
    No offense, but stop listening to whoever told you to do it, that's the silliest thing I ever heard. Nothing worked as well as the original lining. Period.
    Keep the original and take care of it by not letting water sit in it and keeping gas rotating through it.
    If it is going to sit unused, drain it thoroughly first.
    #7
  8. bmwloco

    bmwloco Long timer

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    Took a leap o' faith and cleaned an old BMW RS tank with PinSol, then rinsed it, dried it, and added gas.

    In line filters look clean, and the bike runs... but fill the tank over 1/2 and it leaks. Looks like POR15 for this old beater.

    Or just travel with a half a tank and a SIGG fuel bottle in the tail pack. :freaky
    #8
  9. chasbmw

    chasbmw Long timer

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    Better to drain down tanks every couple of years and remove all the crud and water that sits below the fuel pipes.

    If the tank needs relining make sure that the liner manufacturer wil Gtee that the stuff will resist ethanol. Lots of problems in the UK with fuel eating either liners or Fiberglass fuel tanks.

    Charles
    #9
  10. danedg

    danedg Horizontally Opposed

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    Moyers Tank Repair, PA
    #10
  11. Dolly Sod

    Dolly Sod I want to do right, but not right now

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    We want to see some photos down the filler neck!
    #11
  12. Dolly Sod

    Dolly Sod I want to do right, but not right now

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    You have pinhole leaks or something? I'm not sure I'd expect a liner to plug a leak.
    #12
  13. AK Bob

    AK Bob AKAM

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    Do the tank relining BEFORE the PAINT.

    I LEARNED the Hard way.. Got traped by time gambeled and lost. May even have pics over on BMWMOA airhead rebuild link.

    Wear over kill eye protection too! The plug popped, and I caught it with my face, and got real LUCKY. That stuff does burm!

    It is great stuff.
    #13
  14. sebastianhammer

    sebastianhammer Adventurer

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    +1 for Caswell
    #14
  15. rambozo

    rambozo Been here awhile

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    por 15 claims to fix pinholes if you paint it on inside and out, the kit i got had a mesh to cover holes on the outside, which you then paint over with por

    my tank had no leaks so i cant verify if it works on that score but i was very impressed with the kit, it included a cleaner, acid etch and por 15, it was pretty dear but i'll definitely use it again
    #15
  16. 00_Green

    00_Green Adventurer

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    I just refinished a tank with the POR-15. The red liner was blistering and there was very light rust on the bare spots. The kit was easy to use and looks great. I bought rubber stoppers at the local hardware store to plug the petcock and filler holes.
    #16
  17. tlux

    tlux Adventurer

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    With my flashlight I was able to look down the tank and get a decent shot. Here's what it looks like:

    [​IMG]
    #17
  18. LoJack

    LoJack Long timer

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    Wow, is that what i think it is, Saturn devowering his Son? Saw that in a museum in Barcelona over 15 years ago and it always stuck with me.

    Must be a mess in that tank!
    #18
  19. robtg

    robtg Been here awhile

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    Excellent......thread degradation at its finest, Tank corrosion to Spanish art. Bravo !!!
    #19
  20. H96669

    H96669 A proud pragmatist.

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    :lol3I looked inside one a couple weeks back with a borescope, did not really like what I saw. I could play at capturing the images....may even find the face of Christ in there then sell it of Flea Bay for well over what it is worth now. With documentation of course.:pope

    Christ de Tabarnak...!:lol3

    Not very hard soldering pinholes in tanks, grandpa teached me that a long time ago. Good solder,acid paste,a plumber's iron and a way to heat up the iron.:1drink
    #20