I had a cracked one on my Z (when bought I presume), in order to get the car back running (after HG replacement) I put a little epoxy in the manifold (through the PCV hole) to fill the crack. It worked fine while I ran that manifold. The correct way to do it would be to remove it and have it welded (or replaced). I didn't weld mine because I didn't have my TIG with me at the time.
------------------------------------------------------------------ 1992 300ZX NA 5 Sp (Dead) 1990 300ZX NA Auto 2+2 (Dead) 1990 300ZX TT 5 Sp (Est. 400 HP) 1990 300ZX TT 5 Sp (Est. 600 HP) 2004 G35 Sport 6MT (DD) |