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12-31-2020, 07:09 PM
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#1 |
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Member
Join Date: May 2010
Location: Swift Current, Sask., Canada
Posts: 33
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Head bolt sealant
What have you guys found to be the best sealant for the head bolts to block on a 21 stud. I tried thread sealant paste but it didn't work. Thx and Happy New Year
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12-31-2020, 07:25 PM
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#2 |
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Senior Member
Join Date: May 2010
Location: Charlotte NC KiWi-L100 available here
Posts: 2,954
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Re: Head bolt sealant
I have used 3m weatherstrip adhesive for longer than I can remember on dozens of not hundreds is engines to include flatheads, small & bb Chevy. Never a leak or issue.
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12-31-2020, 07:29 PM
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#3 |
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Senior Member
Join Date: May 2010
Location: near Pittsburgh, PA
Posts: 401
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Re: Head bolt sealant
Permatex no. 1
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12-31-2020, 07:41 PM
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#4 |
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Member
Join Date: May 2010
Location: Swift Current, Sask., Canada
Posts: 33
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Re: Head bolt sealant
Thx. Pematex was my next option
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12-31-2020, 07:44 PM
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#5 |
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Senior Member
Join Date: Oct 2015
Location: Socal
Posts: 795
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Re: Head bolt sealant
Permatex #2 on headbolts.
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12-31-2020, 07:48 PM
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#6 | |
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Senior Member
Join Date: Sep 2013
Location: SoCal-Redlands
Posts: 3,007
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Re: Head bolt sealant
Sponsored Links (Register now to hide all advertisements)
Quote:
X2 on number 2
__________________
Making the simple complicated for over 30 years. |
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01-01-2021, 08:30 AM
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#7 |
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Senior Member
Join Date: Jun 2013
Location: Marana Arizona
Posts: 1,775
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Re: Head bolt sealant
Permatex Thread Sealer part #80632 Available on Amazon in both the 4oz jar and 6ml tube.
This is a Teflon product that I have found seals well and does not harden. . . Chap |
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01-01-2021, 09:30 AM
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#8 |
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Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: Head bolt sealant
Buy at O'Reilly's. I have also used Non -hardening permatex as it works great also.
Last edited by 19Fordy; 01-01-2021 at 10:10 AM. |
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01-01-2021, 11:53 AM
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#9 |
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Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,416
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Re: Head bolt sealant
I used to use Aviation Permatex and just dip the threaded tips in the can but there are likely better sealers now days. This also keeps the bolt tips from corroding which allows for easier removal during maintenance.
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01-01-2021, 12:47 PM
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#10 | |
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Senior Member
Join Date: Oct 2015
Location: Socal
Posts: 795
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Re: Head bolt sealant
Quote:
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01-01-2021, 01:54 PM
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#11 |
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Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,060
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Re: Head bolt sealant
I use ARP Teflon stud/thread sealant - comes in a tube.
https://www.jegs.com/i/ARP/070/100-9904/10002/-1 When I install the studs, I do not put water into the engine for at least a day - just to give it some time to seal the threads a bit. Also, I use a thread chaser (not a tap), on the block threads - to get as much rust and old crap out of them as possible. This method has worked for me on countless flatheads - with both studs and bolts. |
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