[BFix] rusted/broken exhaust manifold bolts

[Erik Christensen]

welding a nut on generally works for me; use as much heat as you can get away with. I generally start cranking on them immediately, not waiting over night.

 Really though, this can be taken as a GREAT opportunity to get some nice new aluminum heads :)
  ----- Original Message ----- 
  From: Shehatesmybronco at aol.com 
  To: bfix at broncofix.com 
  Sent: Monday, April 21, 2008 6:35 PM
  Subject: [BFix] rusted/broken exhaust manifold bolts


  Ok I need to know some of the tricks to getting the rusted and broken bolts out of the heads from my manifolds.  The headers on my 74 (302)are rusted through in a couple of places and I started trying pull them and they started breaking off so I stopped.  I don't want to have to pull my motor or my heads to correct these broken studs and bolts.  A guy at work says to weld a nut on the stud (if it's got enough to weld to) with an arc welder.  He said it gets it hot enough to expand but not hot enough to lose it's strength.  When it cools he said to use PB blaster or some type of penetrating oil on it and let it sit over night and they are fairly easy to get out. Has anyone ever tried this and does it work?  Is there and easier way?  I have a broken stud on my 78 also and I really don't want to mess with the 351M.  Any help I could get would be greatly appreciated.

  Ron
  74 trying to get it together before it rusts apart
  78 2nd owner totally stock 





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