Topic: Message #1136005

[Gnarly4X]

My experience with the 22RE exhaust manifold:

Had an exhaust leak,  tried tightening rear studs,   they pulled out of head.

Took off manifold,  it was warped,  so I needed to get it surfaced so it would seal.

Then because I'd lost 2 studs holes,  I drilled out all the holes and put in threaded inserts so there was no way they'd pull out again.

And because I'm thrifty, I used SAE instead of metric  ( 3/8 vs  10mm) and cut to length a stainless steel threaded rod instead of studs. (and stainless nuts).     

This is a low torque application, so you don't need grade 5 or 8, and stainless is stronger than grade 2 (close to 5) and it won't corrode.

Yeah.. I'm not a metallurgist, but I think SS is less reactive to the alloy head, so the threads would not corrode as bad as steel.

Gnarls.