Tooter manifold / Corolla TB / DC Header / etc....

[cali yaris]

-ARP exhaust manifold/head studs wouldn't install in the two outer locations

Why not?

[3cyltrbo]

Originally Posted by cali yaris

Why not?

Dunno, ..............It was crazy. None of the 5 ARP studs would fit into the two outer holes, they refused to thread into the holes.

At first I thought it was maybe just one bad ARP stud / or one of the outer holes was cross threaded?????



NOPE

-None of the 5 ARP studs would thread into either of the outer holes, but they all would easily thread into the 3 inner holes

-All of the OEM hardware (studs or bolts) easily threads into the outer holes (as well as the 3 inner holes)

So.........................right now I have 3 ARP head studs in the inner locations (where the bolts were) .............and the factory OEM studs in the outer locations (but with the ARP nuts) and then of course, 2 unused very expensive ARP studs in a bag in my tool box.