best thread sealer- head studs.

General engine tech -- Drag Racing to Circle Track

Moderator: Team

dfarr67
Pro
Pro
Posts: 249
Joined: Sat Jul 27, 2013 7:14 pm

best thread sealer- head studs.

Post by dfarr67 » Tue Feb 13, 2018 11:07 am

Best is a relative term and I know everybody has their favorite, I have a list on Amazon between $17-$40....which one? My tube of 565 won't complete the job. Leaning towards the 567.

Permatex 80016 Form-A-Gasket #2 Sealant
ARP 1009904 Thread Sealer
GM Fluid 12346004 Teflon Pipe Sealant
Loctite LOC59231 592 PST Thread Sealant Slow Cure
Loctite 56747 Thread Sealant 567 PST High Temperature
Loctite 1158514 Head Bolt and Water Jacket Sealant

Krooser
Guru
Guru
Posts: 1267
Joined: Wed Jul 31, 2013 10:14 pm
Location: Tropical Wisconsin

Re: best thread sealer- head studs.

Post by Krooser » Tue Feb 13, 2018 11:43 am

For years I used permatex in the brush on can... Last time I used plumbers liquid Teflon in the $1.29 can...
Last place in the B-main is better than anyplace in the grandstands...

SupStk
Guru
Guru
Posts: 1268
Joined: Wed Jun 22, 2005 6:25 pm
Location: Box Elder, SD

Re: best thread sealer- head studs.

Post by SupStk » Tue Feb 13, 2018 12:35 pm

I've been using plumbers pipe dope with teflon. Get it at Ace hardware. No leaky studs since using it.
Monty Frerichs
B&M Machine

User avatar
Baprace
Guru
Guru
Posts: 1615
Joined: Sun Aug 06, 2006 4:57 am
Location: Henrietta NY 14623

Re: best thread sealer- head studs.

Post by Baprace » Tue Feb 13, 2018 1:37 pm

I still use the Permatex with the brush.

dfarr67
Pro
Pro
Posts: 249
Joined: Sat Jul 27, 2013 7:14 pm

Re: best thread sealer- head studs.

Post by dfarr67 » Tue Feb 13, 2018 5:59 pm

Canada here- no Ace Hardware and everything cost 10x.

Today I picked up:

567- which is probably what I will use, but also Permatex #2 and this-->

http://www.jetlubecanada.com/tds/TF-15.pdf
Last edited by dfarr67 on Tue Feb 13, 2018 6:13 pm, edited 1 time in total.

MELWAY
Expert
Expert
Posts: 775
Joined: Mon Dec 04, 2006 7:37 pm
Location: melbourne australia

Re: best thread sealer- head studs.

Post by MELWAY » Tue Feb 13, 2018 6:01 pm

White loctite 567 works every time
3370lb Sedan 9.89@136MPH 358chevN/A

dfarr67
Pro
Pro
Posts: 249
Joined: Sat Jul 27, 2013 7:14 pm

Re: best thread sealer- head studs.

Post by dfarr67 » Tue Feb 13, 2018 6:39 pm

I'm sure it is also what GM repackages.

sanfordandson
Guru
Guru
Posts: 5035
Joined: Sat May 20, 2006 6:28 pm

Re: best thread sealer- head studs.

Post by sanfordandson » Tue Feb 13, 2018 8:49 pm

Right stuff always works best for me.

smeg
Pro
Pro
Posts: 435
Joined: Fri Feb 09, 2007 12:43 am
Location: melbourne, Australia

Re: best thread sealer- head studs.

Post by smeg » Tue Feb 13, 2018 8:57 pm

I learned a hard lesson many years ago with head studs,
use high strength loctite red, some in the block some on the stud, screw all the way down then back out half a turn. work quickly to do all studs, then slip a head down into place, let sit overnite, take the head off and clean up the residue. fit head and tension as per normal.
Believe me this works, never had a head gasket issue or any problem doing it this way ever! One man I told, did not believe me and bottomed the studs out with pipe sealant and promptly split the top of the block as the stud moved down into the taper at the top of the thread.
This is why you back them out a half turn.

User avatar
MadBill
Guru
Guru
Posts: 13239
Joined: Tue Nov 15, 2005 10:41 am
Location: The Great White North

Re: best thread sealer- head studs.

Post by MadBill » Tue Feb 13, 2018 9:13 pm

A SpeedTalker whose handle I forget mentioned a while back that he drops a ball bearing into each hole before screwing in the stud, to prevent it wedging into the last of the thread. If you're really A-R, you could verify that the stud doesn't thread in as far once the ball's in place.
Felix, qui potuit rerum cognscere causas.

Happy is he who can discover the cause of things.

Momus
New Member
New Member
Posts: 37
Joined: Tue Aug 13, 2013 8:38 am

Re: best thread sealer- head studs.

Post by Momus » Tue Feb 13, 2018 10:08 pm

smeg wrote:
Tue Feb 13, 2018 8:57 pm
I learned a hard lesson many years ago with head studs,
use high strength loctite red, some in the block some on the stud, screw all the way down then back out half a turn. work quickly to do all studs, then slip a head down into place, let sit overnite, take the head off and clean up the residue. fit head and tension as per normal.
Believe me this works, never had a head gasket issue or any problem doing it this way ever! One man I told, did not believe me and bottomed the studs out with pipe sealant and promptly split the top of the block as the stud moved down into the taper at the top of the thread.
This is why you back them out a half turn.
I thought the lesson you were going to confess to was heating the studs red to remove them after chemically welding them into the block.

pdq67
Guru
Guru
Posts: 7233
Joined: Thu Mar 04, 2010 8:05 pm

Re: best thread sealer- head studs.

Post by pdq67 » Tue Feb 13, 2018 10:47 pm

Been using, "Indianhead", for more years than I care to remember.

On head gaskets too and all bolts that need sealed.

pdq67

exhaustgases
Guru
Guru
Posts: 2070
Joined: Sun Oct 06, 2013 9:03 pm

Re: best thread sealer- head studs.

Post by exhaustgases » Tue Feb 13, 2018 11:00 pm

smeg wrote:
Tue Feb 13, 2018 8:57 pm
I learned a hard lesson many years ago with head studs,
use high strength loctite red, some in the block some on the stud, screw all the way down then back out half a turn. work quickly to do all studs, then slip a head down into place, let sit overnite, take the head off and clean up the residue. fit head and tension as per normal.
Believe me this works, never had a head gasket issue or any problem doing it this way ever! One man I told, did not believe me and bottomed the studs out with pipe sealant and promptly split the top of the block as the stud moved down into the taper at the top of the thread.
This is why you back them out a half turn.
I bet they are easy to remove when you want to or need to. So do you bake the block in a cleaning oven at 700 degree's F to get them to come out?
I'd like to hear more.

superpursuit
Member
Member
Posts: 88
Joined: Sun Apr 20, 2014 11:07 pm

Re: best thread sealer- head studs.

Post by superpursuit » Wed Feb 14, 2018 12:10 am

MadBill wrote:
Tue Feb 13, 2018 9:13 pm
A SpeedTalker whose handle I forget mentioned a while back that he drops a ball bearing into each hole before screwing in the stud, to prevent it wedging into the last of the thread. If you're really A-R, you could verify that the stud doesn't thread in as far once the ball's in place.
Madbill. I believe they are referring to an open hole, and thus the need for sealer.

User avatar
modok
Guru
Guru
Posts: 1589
Joined: Sun Jun 06, 2010 1:50 am

Re: best thread sealer- head studs.

Post by modok » Wed Feb 14, 2018 1:41 am

It's cool loctite does continually come out with slightly improved formulas with new part numbers to confuse the heck out of me, but in a lot of cases they don't perform any better.
IMO, stay with the 565
Glen Urban

Post Reply