Exaust manifold bolts rusted and rounded

Discussion in 'Technical' started by Halebopp, Apr 22, 2008.

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  1. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    I go through PB-Blaster by the case at work!!! great stuff.Definitely works as advertised.Heat helps too.
     
    Mavman72, Apr 22, 2008
    #16
  2. 71gold

    71gold Frank Cooper Supporting Member

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    a lot of times ...with me...
    if the bolt head is this bad...the bolt breaks...:cry:
    hope this isn't the case with yours....PB BLASTER...

    ...:Handshake...
     
    71gold, Apr 22, 2008
    #17
  3. 71gold

    71gold Frank Cooper Supporting Member

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    ...or 2-3 150 shots of NOS...same thing...

    ...:Handshake..
     
    71gold, Apr 22, 2008
    #18
  4. PaulS

    PaulS Member extrordiare

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    Try using a six point metric or undersized SAE socket on them. If that won't work then weld a nut on them by filling the center as you weld them on. After they cool a bit then turn the bolt out using the nut and a socket. This also works with broken bolts.
     
    PaulS, Apr 23, 2008
    #19
  5. Rando76

    Rando76 Member

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    I've done this to remove locking lugnuts as well.
     
    Rando76, Apr 23, 2008
    #20
  6. Halebopp

    Halebopp Member

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    Ok thanks for all the Advise bought a set of Craftsman bolt extractors last night , uses a 3/8 socket wrench, also will get PB blaster, for the life of me I could not remember what that stuff was called. anyway will buy some on lunch today.
    will a small propan torch suffice for heating if it comes to that? sorry guys I have no welding knowledge at all.
     
    Halebopp, Apr 23, 2008
    #21
  7. Old Guy

    Old Guy Member

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    I don't think the propane torch will work, not enough heat. I have alway's used a acetyline torch and get the bolt, nut, pipe plug, etc. cherry red and then squirt it with a stream of cold water. Works everytime for me. Might be able to try it with the propane torch and be prepared to apply the flame for a long time. Then tap the socket on the head and see if it backs out. Be sure to use good pair of gloves either way.
     
    Old Guy, Apr 23, 2008
    #22
  8. Halebopp

    Halebopp Member

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    Ok old guy dude hope it doesn't come to that, but will keep that in mind.
     
    Halebopp, Apr 23, 2008
    #23
  9. maverick1970

    maverick1970 MCG State Rep

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    A cylinder of MAPP Gas will get you a little more heat from your small torch.
     
    maverick1970, Apr 23, 2008
    #24
  10. j miller

    j miller Montana MCCI state rep

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    mapp gas is much better than propane. get it hot then spray with p.b. let it soak then try the tools.
     
    j miller, Apr 23, 2008
    #25
  11. newtoford

    newtoford Member

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    wouldnt you heat the manifold, not the bolt? wouldnt heating the bolt expand it tighter into the manifold?
     
    newtoford, Apr 23, 2008
    #26
  12. j miller

    j miller Montana MCCI state rep

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    if possible it is best to run the car and heat both but if all you can do is a small area then heat the bolt and surrounding steel.
     
    j miller, Apr 24, 2008
    #27
  13. Halebopp

    Halebopp Member

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    THe heating expands it but then the cooling contracts and breaks it loose
     
    Halebopp, Apr 24, 2008
    #28
  14. stmanser

    stmanser Looking for a Maverick

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    start the engine, if possible... let the headers/exhaust manifolds heat up.. and try the craftsman bolt removal tool as mentioned.. they work great, with patience.

    otherwise, you will need to cut the heads off the bolts, and try that route
     
    stmanser, Apr 24, 2008
    #29
  15. Halebopp

    Halebopp Member

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    I have the bolt removal tools just need time to get out there and try it. I did spary some PB Blaster last night though.
     
    Halebopp, Apr 24, 2008
    #30
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