Locktite for Exhaust Studs?

[BQS4]

I did search and only came up with more questions, but, basically, which Locktite to use to secure studs into the exhaust manifold (not the head) to hold studs for the headpipe?

[Ooooner]

Gene,
I didn't use Locktite. I just put "Anti-seize" stuff on the bolts and tightened them to the torque specs for those bolts. The Anti-seize stuff I used was for high heat. No problems at all. I know there is the blue and red Locktite but I'm not sure if they are for high heat areas. Maybe there is a Locktite for high heat areas.

[namba209]

Gene, Roy's right on. Use only anti-seize on anything in the exhaust system. Best bet, if you can find some at a local airport, is MIL-T-555. It's a graphite based compound used to put spark plugs in aluminum heads on air-cooled engines. Lotsa heat there and the graphite base gives it great electrical conductivity. HTH.

[BQS4]

Thanks guys, I had a hunch it was that way, but, since there are more people getting problems solved, that maybe something new had come along. I was going to do the anti-seize, just wanted to check first.

[opelspyder]

I actually tend to use the red locktite on these, if I use bolts only. I use stainless bolts as well, but if you are changing it over to where you will have studs, I would use red loctite, as I do not want the studs to back out-which in most cases they won't, but on other cars-if you do not loctite them, and have to remove them again-the stud wants to come out with the nut in many cases, so I'd rather not have that-and just loctite them in. Personal preference is all
Keith

[BQS4]

Well, my intentions were to not have the studs back out. But, having studs on the exhaust manifold helps in the install/removal of the 5-spd trans in the Manta/Ascona. This is not a problem in GTs

[wrench459]

Gene think of the blue as a lock washer.
The red on the other hand needs heat like a torch 1500 F to break it loose.
There might come a time that you'll need to remove the studs..like when the threads are stripped.

[Gary]

Originally Posted by BQS4 Well, my intentions were to not have the studs back out. But, having studs on the exhaust manifold helps in the install/removal of the 5-spd trans in the Manta/Ascona. This is not a problem in GTs

I just upgraded the exhaust on my wagon to 2". I split the pipe ~2 feet back from the "y" and used a band clamp to secure it to the rest of the system. No leaks and it took all of 5 minutes to drop the head pipe when i replaced the dipstick o-ring.

[opelbits]

I used no loctite, but I switched to brass nuts instead of steel. They don't corrode to the studs, so you don't have to worry about the stud backing out.

On the Alfas I used to work on, we would would double nut. We used a half height and a full height brass nut. Never ever had problems.

McMaster Carr is a good source, as is Metric and Multistandard in Chicago.

The other nice tyhing about the brass nuts is that if for some reason you can't get them off, like the nut threads strip, there are super easy to drill or split.

[Dale .D]

Originally Posted by BQS4 Thanks guys, I had a hunch it was that way, but, since there are more people getting problems solved, that maybe something new had come along. I was going to do the anti-seize, just wanted to check first.

I'm with you .Use anti sieze on the bolts but also use the highest heat pernatex on the sufaces of the gaskets just for added seal.good luck

[heimue]

Anti-seize it is!

Greetings from Washington, DC!

Dieter