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So maybe the thing to do is replace the studs with the rest of the head work.


Absolutely it is. IMO, any engine rebuild is suspect without replacing all exhaust studs/bolts, including those on the manifold flanges, heat shields and the EGR valve and pipe. The ones in aluminum heads are not fun to remove, though. <img src="/forums/images/graemlins/barf.gif" alt="" />

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum