I hate rust. Everything is coated... I have ARP's manifold to head kit, etc.

The last issue is the studs for the manifold to turbo.

I have a local machine shop that can make them for me out of 310, or 316 SS. This will include matching washers and nuts.

Question is -- will those studs be strong enough and if so, what torque should I tighten them too?

 

The best answer I got so far from our machinist was 360 inch pounds or 30 ft/lbs.

Thats based on 310SS with a 10mm stud and a light lubrication

 

A common problem with eary DSM vehicles was the exhaust studs breaking. Anyway, the maker fixed this problem. But, it shows that the studs are often under a lot of strain with the heating and cooling of the manifold. I'd be careful with what material I used.

 

not sure if this helps, but i replaced the OEM bolts with some fancy super-tough, grade 8 ones.. and they seized. i broke both of them off inside and had to drill them out.
definitely be careful what material is used.
next time i'm gonna stud them.

 

The SS wouldnt hold up due to the material expansion and pressures.

I had grade 8 studs zinc plated by a local shop to prevent rust.

Oh well.