Head studs leaking coolant

BillK · 07-01-2014, 10:39 PM

Tim,
I use the Permatex White Teflon sealer, only because its a lot less expensive than the ARP stuff.
That being said, I have found that the trick to getting studs to seal is to put a healthy "glob" of the sealer in the hole in the block before you thread the stud in. I also put some on the threads of the stud, but not a whole lot. I think what happens with studs is for some reason if you only put the sealer on the stud, 90% of it gets wiped off as you thread the stud into the block. I don't understand why the same thing does not happen with bolts, but ever since I have started putting the sealer in the hole first, I have not had an issue with the studs leaking.

Hope this helps,

07-01-2014, 10:39 PM	#7
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Re: Head studs leaking coolant Tim, I use the Permatex White Teflon sealer, only because its a lot less expensive than the ARP stuff. That being said, I have found that the trick to getting studs to seal is to put a healthy "glob" of the sealer in the hole in the block before you thread the stud in. I also put some on the threads of the stud, but not a whole lot. I think what happens with studs is for some reason if you only put the sealer on the stud, 90% of it gets wiped off as you thread the stud into the block. I don't understand why the same thing does not happen with bolts, but ever since I have started putting the sealer in the hole first, I have not had an issue with the studs leaking. Hope this helps, __________________ Bill Koustenis