Replacing exhaust studs

[KnockOffBrand]

So I'm in the process of changing out my exhaust studs for the manifold that go into the head, and I was reading some threads about it and some say it's crucial to chase the threads to clean them out with a tap before installing the new studs. Is this important to do? Also, when screwing the new studs in, what is the torque spec for tightening the studs? And should I apply some sort of anti-seize compound or loctite to the studs before installation?

[Vincent Brick]

I feel its important to chase the threads. I only install the studs finger-tight or a little past, with a little bit of anti-seize since it is a steel stud into aluminum. I have not experienced any issues doing it this way although sometimes the stud comes out with the nut upon removing, but that seems to happen sometimes no matter what you do. I'll take one coming out with the nut over one snapping off.

[jeffnhiscars]

Do not torque these unless you want to risk cracking your head.

Good advice from VB

[digger]

anyone remember where to get the studs with hex drive allen key at one end?

[whodwho]

I went stainless and got a set of these and hope they are up to the part for a set of these nuts, I have not installed them yet but these nuts are a work of art (well I think they will work nicely anyways... 8^)

http://www.ebay.com/itm/x4pcs-M8-1-25-x-40mm-Screw-Stud-4mm-Socket-SS-8mm-Stainless-/201458648247?hash=item2ee7df04b7

http://www.ebay.com/itm/QTY-2-M8-M10-M16-GENUINE-AEROTIGHT-STAINLESS-STEEL-ALL-METAL-SELF-LOCKING-NUTS-/152083452195

[KnockOffBrand]

I got studs and copper coated nuts from fcpeuro. So the consensus is that there is no certain torque spec, just hand tight? I've heard like 10-15 ft-lbs on other threads/forums.

[Vincent Brick]

My recommendation is finger tight. Also try to blow any oil/chunks/etc. out of the holes after you chase the threads, before installing the new studs.

[AndrewBird]

No reason to go any tighter than finger tight. Basically just enough to keep the stud in place.

You don't have to chase the threads, but if there is junk in them, you should. If the studs won't go all the way in with just your fingers, you should chase the hole.

I highly suggest you use the stock copper nuts. Keeps them from rusting onto the studs.

[mtnbimmer]

Chase the threads with a thread chaser, not a tap (yes, there is a difference and for a reason...).

[jeffnhiscars]

I got studs and copper coated nuts from fcpeuro. So the consensus is that there is no certain torque spec, just hand tight? I've heard like 10-15 ft-lbs on other threads/forums.

They are surely solid copper and not coated