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removing exhaust

Discussion in 'XJ Technical Chat' started by porch10, Mar 19, 2008.

  1. porch10

    porch10 New Member

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    I am in the middle of a complete stripdown of my 750 maxim followed hopefully in the future by a complete re-build.Trouble is I need to get the exhaust of so that I can get the engine out but the exhaust pipe flanges are stuck on the studs I assume by corrosion.I don't want to use force in case I snap something anyone got any ideas!
     
    porch10, Mar 19, 2008
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  2. TheBostik

    TheBostik Member

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    I had the same problem, I jammed a 2x4 in there and hit the hell out of it with a mallet for each header pipe.

    But uhh, if you don't wanna use force...

    Good luck :lol:
     
    TheBostik, Mar 19, 2008
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  3. porch10

    porch10 New Member

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    Nice one Bostik,thanks for the idea I said I didn't want to use force but didn't say I wouldn't if thats the only option left!!
     
    porch10, Mar 19, 2008
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  4. TECHLINETOM

    TECHLINETOM Member

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    Kroil or PB B'Laster and let it soak.

    17 weeks should do! ;D

    No seriously soak it and tap on the nuts gently for a while
    a few days if you can.

    Then get a wrench that fits very tightly and place it on the nut.
    grt your SMALLEST hammer and GENTLY tap the wrench while putting
    a SMALL amount or torque on the wrench in the direction you want it to turn.

    Keep tapping while resisting the urge to beat it to death until it breaks loose.

    Then tap it the other way a little ( maybe 1/8 turn at most).

    Keep tapping and spraying until the nut turns easily.

    The key to this operation is PATIENCE.

    If this doesn't work you can heat it with a propane torch ( be careful because the penetrating oil is very flammable ) and when it is hot ( too hot to touch but not glowing ) touch an unlit candle to the nut and stud. The candle wax will get into the threads and allow you to remove the nut.

    If the nut squeaks STOP and re-apply heat and wax and try again.
    The squeaking is the nut telling you that it's trying to weld itself to the stud and break it off!

    This method works on the most stuck fasteners you can imagine.
    Try to not heat the aluminum as it won't give any warning before it melts or breaks.

    You may also try heating the nut and cooling the stud with an ice cube if you can get it in there. That expands the nut and shrinks the stud.

    Good Luck and Take Your Time
    A broken stud is a PITA.
     
    TECHLINETOM, Mar 19, 2008
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