Eyal 951

Hey, i have the old exhaust manifold studs out of the head, and I'm wondering what a good procedure is to get the new studs on and torqued. I'm also converting the intake side to studs as well. I ordered 16 exhaust manifold studs to do both exhaust and intake. Should I use a locking agent such as locktite? thanks.
~Eyal

Jakerx

hmm i didn't know it needed anything like locktite on the studs...i just thought torqueing them down properly was the procedure.

Eyal 951

ok, how do you torque em down them?
~Eyal

Zero10

I've always locked 2 nuts together on the stud, and used that to thread studs in/out.

Eyal 951

Thats how i got em out, wasnt sure if its good to put em in like that. Whats torque spec?
~Eyal

Jakerx

yes i've used the two nuts method to screw the studs back in...but i have to check on the torque specs. i can't remember off the top of my head and i don't have my manual with me. sorry buddy. i'm sure someone will chime in soon and inform us.

Eyal 951

the short side goes into the head right? i hope so, cause thats how im loctiting them in.
~Eyal

Yabo

I think I just used channel locks until it stopped. I didn't torque and they are still tight 6 months later.. but better to be safe then sorry I suppose.

Eyal 951

I torqued em pretty hard, and used loctite, i dont think these things are coming out any time soon. I'll start a new thread on the intake stud conversion with photos.
~Eyal

Granite 944

In my experience with using studs anywhere on an engine of any kind, the shorter threaded side of the stud always goes into the block, or the head, whatever body the stud must mount into anyway. As far as torquing them, I don't. I just double nut them, and run them down until the short side of the threads are completely engaged, or into the surface, and gets a little snug. Overtorquing more here could end up pulling/stretching threads out of the block/head, and makes it a bear to remove it the next time, the way I sees it. On manifold studs, I always use anti-seize on them, never locktite. I WANT them to come out easier the next time. Corrosion/heat cycling/electrolisis will lock them in soon enough without any help from me torquing or gluing them in. With the locktite, you'll just have a lot more fun getting them out the next time. Thats why I swear by anti-seize. Once you torque the nuts that hold the manifold on, nothings going anywhere anyhow. If later, when taking it apart, the stud comes out with the nut.......thats just fine with me. I don't have any intentions of running these in and out a lot, thus wearing out threads.

Just curious. Why did you want studs for the intake manifold anyway? The allen bolts work just fine from what I see, they are stronger, and when removed, allow easier removal of the manifold anyway. At least, thats what I would think.


edit: opps.......just saw your other thread. Cool!

dme

I just swapped my exhaust studs out for the Saturn studs with the star end for easy tightening. As far as torque goes...well, they are tight and a periodic check on the bolts is always in my general engine checkup schedule.