How to remove seized exhaust manifold bolts without breaking them.. How to remove seized / corroded exhaust manifold bolts or studs with acetylene torches. Without breaking the old bolts off in the cylinder head. 1998 GMC Sierra K2500 3/4 ton 4WD. In this case the manifold was already rotted through and ruined anyway. Otherwise just heat the manifold area described in the video to remove the bolts.
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