I would think you could just put teflon tape on the stud when you put it in. I remember I had a 318 dodge van once I put headers on and the front and rear had studs. I took them out to put header bolts in and they were into the water jackets thats why they used studs. I just put teflon on and put the studs back in and put a spacer on the headers.

 

Unless something else better comes up I'm probably going to either go with a Teflon based sealant or a simple two-part epoxy, you didn't have issues with the heat and the Teflon sealant?

 

use one of these they are solid not a coil, that may make it easer to seal. I used them in my Donavin block for the motor plate bolt holes that were striped out.

 

Any idea what kind of supplier carries them, I've touched base with my local grainger and my local mill supply and so far no luck?

 

Use the permatex sealer on the solid helicoils and you should be ok.

 

Just use a thread sealant, you may need to get it back apart one day.

 

I can't see where Teflon tape is going to hold up to the exhaust temps.

Try this company: http://www.deaconindustries.com/

 

Ok, just found the soild thread inserts locally at my Fastenal which is of-course closed on Saturday!

 

Teflon thread sealant or even just RTV will work fine. It won't see exhaust temp, it will be the same temp as the head. Around 200*

 

X2 works just fine. I did this in a 6.0 317 head. Owner tried to drill it out himself and broke a drill off in the head after he broke thru into the water jacket. I heli-coiled the hole and used ARP studs instead of bolts with permatex thread sealent. No issues.

 

What head is it? I have some 862s and a good 706 I could mail you cheap if you didn't feel like dealing with it.

 

all my header bolts go into the water jacket alls i use is ultra copper for the header flange and put some on the bolts as i put it together and havent had any problems with leaks this is a max effort turbo deal so i would assume it has more stress than a old work van

 

Tig

 

Damn, so header bolts go into water jacket on ls engines?

 

mine is a sbf application were we drilled the head for a wide bolt pattern

 

Install helicoil and exhaust bolt/stud with liquid teflon or Leak Lock.