Head gasket |
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Qipp
Member Joined: 06 June 2010 Location: Ellis Kansas Status: Offline Points: 311 |
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Posted: 16 Mar. 2012 at 1:49am |
It's been so long since I changed a head gasket I forgotten if you use gasket sealer or install it dry. I think I've installed them with gun grease in the past on Model T's |
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Gordon
48 cj2a 152642 Bantam T3-C 4297 |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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I've read often that the copper spray gasket sealer is a good choice for head gaskets.
Tim
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OldSalt
Member Joined: 23 Apr. 2011 Location: Texas Status: Offline Points: 22 |
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Different manufacturers have different proceedures for their gaskets. Some gaskets come with sealant already on them. You should follow the instructions that come with the gasket you buy.
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Qipp
Member Joined: 06 June 2010 Location: Ellis Kansas Status: Offline Points: 311 |
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Thanks guys, I fogot about the permetex spray. I've always preferred using the copper gaskets but they have gotten expensive, are there disavantages to the composition gasket?
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Gordon
48 cj2a 152642 Bantam T3-C 4297 |
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VINTAGE
Member Joined: 30 May 2009 Location: Ulysses, Pa. Status: Offline Points: 123 |
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Good Question, Gordon. I was looking on this site for this answer. I had my head shaved/sanded and immediately after rebuild the gasket leaked now I'm replacing it for the second time, can anyone tell us what would be a better route to replace it with. Or can we all expect 30-50 miles from a gasket, if so their is a real cheap jeep for sale!!!! |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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I have not had to replace my gasket yet. On Ebay, the first link claims he has NOS gaskets, doesn't tell us the composition.
The next link show an aluminum gasket.
I don't know if this is helpful. I wish you both luck
Tim
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tfrazer
Member Joined: 31 Oct. 2011 Location: Montana Status: Offline Points: 335 |
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I have had realy good luck with the permatex spray on composition gaskets. so thats my vote for what its worth.
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Ted
46 CJ2a |
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VINTAGE
Member Joined: 30 May 2009 Location: Ulysses, Pa. Status: Offline Points: 123 |
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"permatex spray on composition gaskets" Ted, Please tell me more. Where can you get this and how do you apply it. Or what might I have done wrong with the first application, I followed the directions to the tee from a Walk's rebuild kit.
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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Roy/ Vintage,
I know you asked Ted, but I thought I might chime in. In this thread, above, I posted a link for the copper spray. It is available at most good auto parts stores, including chains like Napa, Autozone, etc...
I don't know what your process was on your first attempt that failed, but did you torque to spec, get it warmed up real good, then re-torque?
Tim
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VINTAGE
Member Joined: 30 May 2009 Location: Ulysses, Pa. Status: Offline Points: 123 |
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No Tim I didn't. I prepared the head and coated the bottom like the ins. said and torqued to specs. But I don't remember tightening again. It was almost a year before I started the jeep because I did the frame engine and drive train in Florida, then had to move to Pa and did the body and electric here. It took awhile before I could get it running. Funny thing I did all that work and could not get it to electronically to start, then remembered dumb %^& it has a fiberglass body. I forgot a ground. Since I got an expert on line I'd like to ask, would you spend the time and money to have hard valve seats installed wile I have it apart again, I get this in my mind and can't let it go so nothing gets done and its getting WILLYs time...
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rocketeer
Member Sponsor Member Joined: 26 June 2008 Location: Lehighton, PA Status: Offline Points: 3473 |
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The proper procedure is to torque the head to specs in the sequence specified by the mfg, run the engine up to normal op temp, shut it off, let it cool, and then re-torque it to specs again using the specified sequence. It's very important to do the re-torque.
I prefer composite head gaskets, with additional sealer. The better head gaskets can have a top and a bottom so be sure of what you have before installing. If you put it on upside down it likely will fail and leak. Illustration courtesy Wes Knettle Larry |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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Roy,
I am far from a pro. I would refer you to Rocketeer, Sean and many others. I just know what I read.
I will offer an opinion on the hardened seats. If there is something that is normally difficult to get at, and you suspect a problem, while it's open for other issues, do the additional items.
For me, all factors are considered, but if you have really good compression and don't drive it 20,000 miles a year, slip on the new gasket, torque to specs, and drive that baby!
Tim
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VINTAGE
Member Joined: 30 May 2009 Location: Ulysses, Pa. Status: Offline Points: 123 |
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Thanks Tim, I'll take your advice.
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