Name:   Shortbus - Subject:   4.3L V6 Chillin Date:   4/10/2014 8:35:07 AM (updated 4/10/2014 8:36:32 AM)

There were two 2 in cracks.  Decided to weld using cast rods.  Put in oven.  Brought to 4oo degrees.

Welded across cracks.  Cracked upon cooling . Tested with air and some spray foamy stuff.   Had 24+ leaks.

Covered with Marine Tex.

Now I think I'd skip the welding, drill the ends of the crack, and apply Marine Tex.

My opinion is it will still be there when we are pushing daisies.  Success probably depends on surface prep and whether the crack runs.