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Head gasket |
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IowaTom
AMC Nut Joined: Mar/07/2018 Location: Kent Washington Status: Offline Points: 448 |
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Posted: Sep/15/2022 at 12:32pm |
For those who've replaced their engine's head gasket, on the 195.6 OHV, have you used a sealer or replaced it dry?
If a sealant, what specific brand, please? I'm not there yet, but will be fairly soon and would like to get 'r done right. Thanks!
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squirrel
AMC Apprentice Joined: Aug/21/2022 Location: Arizona Status: Offline Points: 47 |
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I just put the 196OHV back together in my 59. I used the BEST gaskets. I installed the head gasket dry, after a good cleaning of the block and head surfaces, using solvent and a fine stone. The gasket appears to be a graphite composition type, which is a pretty modern design, and not supposed to use sealers with them. It did require retorqueing after the first short drive, and I'll probably do that again some time just to check that it's fully seated. |
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Jim
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Heavy 488
AMC Addicted Joined: Apr/27/2019 Location: In the Status: Offline Points: 3529 |
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Didn't the mfr supply any info with the gaskets?
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IowaTom
AMC Nut Joined: Mar/07/2018 Location: Kent Washington Status: Offline Points: 448 |
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Thanks Guys!
I'd bought a Best gasket off Ebarf and an NOS complete set from Brent Havekost - tho not at the same time - and neither came with instructions. I did notice the old cork stuff has shrunk. Nice! Like TomJ, I'm a huge fan of the Right Stuff and will use it with the gaskets I can use, and in place of the ones I can't. What I'm not crazy about are the old 'rope' type rear seals. I don't suppose anyone makes something newer? |
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wittsend
AMC Nut Joined: Apr/15/2020 Location: California Status: Offline Points: 413 |
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Checkout Tom Jennings site. I vaguely recall (so double check) he used the Permatex copper spray on his head gaskets. Might help with the oil and water passages but I'd be concern to get it on the metal ring that seals the bore. My concern would be that it might burn back.
I think with more modern gaskets and now the knowledge to check/tighten at intervals it might not be an issue. I plan to forgo the intake gasket and just use "The Right Stuff" sealant. I can't help but think that the head bolt clamping through two gaskets on the manifold side isn't a contributor to the head gaskets failure.
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'63 American Hardtop
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squirrel
AMC Apprentice Joined: Aug/21/2022 Location: Arizona Status: Offline Points: 47 |
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Maybe we should read the instructions...that aren't packaged with the gaskets.... interesting. I wonder how copper coat sticks to graphite? |
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Jim
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IowaTom
AMC Nut Joined: Mar/07/2018 Location: Kent Washington Status: Offline Points: 448 |
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I appreciate your help, Guys! I agree that Tom's ramblerlore.com website has a ton of information, well explained. Jim, thanks also for the Best web address.
So I bought a set of 12 Fel-Pro valve seals with the correct stem diameter and they're metal jacketed. They weren't AMC specific but they are umbrella type. Should there be a difference between intake and exhaust seals? I'm hoping to use these for all 12 valves. They just look and feel more substantial than the ones that came in the NOS gasket set.
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7522 |
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What! That's crazy talk! Oh what do they know. Lol I used purple Aviation type 3. I wish I could say I RTFM'd it first but I may not have.... My machinist didn't know you couldn't put a modern two piece type rear seal in, so he did and it's completely seep free. I have the part number in my parts list but I'm pretty sure it's just the 232 seal, cut. It has no metal backing in it. I thought the oem ones did but I've learned memory isn't a guide (I learn it over and over, ignoring the results). |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7522 |
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My engine was assembled with the trough cover gasket. I did what I thought was paranoid retorqueing but weeks later I had coolant seeping up those six bolts. They had COME LOOSE. the other 9 we're right. Certainly, that trough cover gasket continued to squash. I had to take the head off, buy a new gasket etc. This time I checked torque every few days until it stopped collapsing. I left the trough gasket in place so it probably crushed as much as it was gonna. So I'd just check torque over and over until it stops changing. Worst you can do is waste your time. Machinist used it. I might have.... But never will again. |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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IowaTom
AMC Nut Joined: Mar/07/2018 Location: Kent Washington Status: Offline Points: 448 |
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Hmm...I was inclined to use my old one since it's still intact and in fairly good condition - and pre-squashed. Now I'm leaning toward the Right Stuff. What amazes me is no exhaust manifold gasket. On the spare engine I tore down, someone had used hi-temp red RTV.
<<I'd just check torque over and over until it stops changing. Worst you can do is waste your time. >> Exactly!
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