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silencers trying to seperate silencer from header

Discussion in 'Norton Commando Motorcycles (Classic)' started by dvd, Mar 28, 2019.

  1. dvd

    dvd

    Joined:
    Jul 12, 2018
    not having any luck seperating silencer from header.trying to replace exhaust rose.silencer seems to be "glued" on to the header.tried wd 40,heat on silencer flare and flat out banging with a rubber mallet.no love.any ideas?thanks all
     
  2. concours

    concours VIP MEMBER

    Joined:
    Dec 29, 2011
    Twist & shout...:cool:
     
    Craig likes this.
  3. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    Throw the wd40 in the bin and get some penetrating fluid
    In the UK we have plusgas not sure what you have bin the states
    Wd40 is a water dispersment
     
  4. Peavey Jeltz

    Peavey Jeltz

    Joined:
    Jan 12, 2019
    WD-40 isn't really a good penetrating fluid. Try Kroil or PB blaster or make your own with a 50/50 mix of acetone and that leftover brake fluid that's been sitting in an unsealed can for the past couple of years.

    You didn't say how much heat. If it's really rusted together, you might need more than just a propane torch.
     
  5. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    More heat will be your best bet
     
  6. lazyeye6

    lazyeye6 VIP MEMBER

    Joined:
    Feb 28, 2014
    Dose with Kroil several times for a couple of days. Then add heat. Then use twisting/shouting
    motion. Then big hammer. Might be easier to remove header and muffler as one piece to work
    on.
     
  7. jbruney

    jbruney

    Joined:
    Jan 5, 2019
    Old fashion off road diesel will penetrate in a pinch, or any of the other proven products. I used diesel when the sea water would get to my tools & then wipe them. It also left a light oily layer slowing further rust. I'm sometimes just cheap like that.
     
  8. dvd

    dvd

    Joined:
    Jul 12, 2018
    just an update,took headers and mufflers off in one piece.stood em up muffler down and soaked the connections with kroil for 3 days.then propane heat and a lot of twisting and shouting and success.thanks guys.
     
    concours likes this.
  9. alan hodge

    alan hodge VIP MEMBER

    Joined:
    Oct 10, 2017
    best thing I have used for getting stuff loose is BP Blaster
     
    kommando likes this.
  10. eskasteve

    eskasteve VIP MEMBER

    Joined:
    Sep 24, 2012
    A thin smear of never seize on reassemble helps future removal.
     
  11. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    That's good advice
    You don't really want the join too tight anyway, there's a fair bit of movement when the exhaust heats up
     

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