Head stud sealant
Thread Starter
Le Mans Master
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From: Richmond Kentucky
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Head stud sealant
What is the best way to seal head studs in a cast iron block, when using aluminum heads? Will Teflon tape work adequately?
Also, has anyone had a problem getting an air gap style intake to seal on GM Vortec aluminum heads?
Thanks,
Rex
Also, has anyone had a problem getting an air gap style intake to seal on GM Vortec aluminum heads?
Thanks,
Rex
Team Owner
Joined: Apr 1999
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Permatex has something that I have used for years.
http://www.permatex.com/products/Aut...ad_Sealant.htm
http://www.permatex.com/products/Aut...ad_Sealant.htm
Le Mans Master
Joined: Jun 2004
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From: Seattle WA
St. Jude Donor '14
Permatex has something that I have used for years.
http://www.permatex.com/products/Aut...ad_Sealant.htm
http://www.permatex.com/products/Aut...ad_Sealant.htm
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I use teflon tape or even liquid teflon on all kinds of engine oil, tranny, and rearend AN fitting cooling lines. Even plugs and filler ports It is not recommended for fuel because the tape can be cut by the threads and it could end up in the carb or injectors
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Team Owner
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From: Crossville TN
AN and other self-sealing joints don't require any sealant. So, using teflon on them is fine...because it has no effect on whether the joint seals or not.
Anyone can use anything for any purpose they want. But, teflon tape was designed primarily as a lubricant for pipe threaded joints so you could get a tighter joint. It also helps fill some minute gaps in the thread joint for water-carrying lines. There is a special [yellow] teflon tape for natural gas joints, but I don't know of any manufacturer that recommends using teflon tape with petroluem/fuel system.
Anyone can use anything for any purpose they want. But, teflon tape was designed primarily as a lubricant for pipe threaded joints so you could get a tighter joint. It also helps fill some minute gaps in the thread joint for water-carrying lines. There is a special [yellow] teflon tape for natural gas joints, but I don't know of any manufacturer that recommends using teflon tape with petroluem/fuel system.
Race Director
Joined: Mar 2006
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From: Florida
Most modern tapes and pastes are both a thread lube and a sealant. Try and stay away from a silicone base.
Many different pastes and at least 5 different densities of PTFE tape. BTW, the colors aren't for compatibility, but for industry or building code compliance. green for oxy and yellow for nat gas.
Loctite has some very good choices and you can preseal the threads just like the bolts you buy,if you wish.
http://www.henkelna.com/us/content_d..._SSF437597.pdf
Some good info on one of them.
http://tds.loctite.com/tds5/docs/LOC...ACKSEAL-EN.PDF
Many different pastes and at least 5 different densities of PTFE tape. BTW, the colors aren't for compatibility, but for industry or building code compliance. green for oxy and yellow for nat gas.
Loctite has some very good choices and you can preseal the threads just like the bolts you buy,if you wish.
http://www.henkelna.com/us/content_d..._SSF437597.pdf
Some good info on one of them.
http://tds.loctite.com/tds5/docs/LOC...ACKSEAL-EN.PDF
