Stock crossover bolt torque spec

[terryk]

I have the factory manuals but could find the specs for the crossover to manifold bolt torque.

Does anyone know the spec? If I can't find it I was going to use the standard Buick crossover spec.

Also, would it hurt to bead blast the contact surfaces on the manifold and crossover? The manifolds have some surface rust and I was thinking of blasting them before I install them.

TIA

Terry

 

[Reaper]

tight enuff that they dont leak but not tight enuff that you snap the F'n bolts!

 

[terryk]

So basically tighten them until they break and then back off one turn?

 

[salvageV6]

22 ft. lbs.

Page 6J-20 in the Turbocharger section.

A bit weak from what I used however.

M.F.T. works for me, last word is Tight!

 

[Turbo Brian]

It might be worthwhile to replace the old bolts with new stock bolts from GM that don't have hundreds of heating cycles: Exhaust crossover bolt: #14060130. There are 5 in a package.

 

[terryk]

Originally posted by salvageV6
22 ft. lbs.

Page 6J-20 in the Turbocharger section.

A bit weak from what I used however.

M.F.T. works for me, last word is Tight!

This is funny because after not finding it I was thinking "I'll bet it's in the TC section". Naw, GM buries stuff but that's clearly exhaust related.

Thanks! I appreciate it.

Terry

 

[Kid with a toy]

The M.F.T. spec seems to work well for me too.

Erik