Exhaust Bolts - Snowblower Forum : Snow Blower Forums
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post #1 of 14 Old 12-10-2015, 11:28 PM Thread Starter
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Exhaust Bolts

Well, my parts are finally here, all broken bolts drilled and tapped and I'm ready for reassembly this weekend. I want to try to avoid any future exhaust bolt issue and am wondering what, if anything, you all use on these threads on assembly? Copper gasket goo, anti seize, loctite, something else, nothing else? I'd like to keep them decent enough for the next time I might need to remove them if possible.

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post #2 of 14 Old 12-11-2015, 07:00 AM
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I'm going to be replacing my muffler soon and I'm planning to replace the bolts with stainless ones. That's of course assuming they're not some impossible-to-get odd size, but that's pretty unlikely.

And regardless of the bolts used, put some anti-seize on the threads!

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post #3 of 14 Old 12-11-2015, 07:51 AM
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If you are going to use anti seize, it as to be the nickel version. Its for high heat applications.




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post #4 of 14 Old 12-11-2015, 08:27 AM
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Loctite 51346 or something similar. I think the specs said good to 2,700 deg.



I use the regular anti-seze that's rated to 2,000 deg. Well in the product specs it said 2K I see on the bottle it's 1,600. Isn't that interesting ??


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post #5 of 14 Old 12-11-2015, 08:35 AM
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I think using high-temp anti-seize could be a good idea, but there are a lot of different kinds of high-temp anti-seize, not just nickel. And I don't think you really need the fanciest stuff.

Permatex copper anti-seize (#09128 for the 8-oz. bottle) is rated to 1800 degrees F. The threads we're talking about go into the engine block... and on average the upper engine block temp on an engine like this runs around 300 degrees F. It's no doubt a bit higher around the exhaust port, but it's certainly not 1800 degrees... aluminum melts at 1200 F!

Actually even the regular "silver" Permatex stuff is rated to 1600 degrees which is probably sufficient.

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post #6 of 14 Old 12-11-2015, 08:37 AM
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Quote:
Originally Posted by Kiss4aFrog View Post
I use the regular anti-seze that's rated to 2,000 deg. Well in the product specs it said 2K I see on the bottle it's 1,600. Isn't that interesting ??
It's 2,000 before taxes, 1,600 after.

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post #7 of 14 Old 12-11-2015, 10:23 AM
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I have been using the copper stuff for years without issue on automotive stuff. Use it on electrical connectors too..... works like a champ



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post #8 of 14 Old 12-11-2015, 10:53 AM
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Myself, I just use the regular Permatex stuff and it's worked well. I have the 8oz bottle and it's enough to last a decade or two.

I've always used it on sparkplugs and I've never had one stick. Never really thought about the high heat stuff but if it's working for the spark plugs it should also be fine for the headbolts.
The exhaust bolts on my turbo Volvo ... that might be where the high heat stuff would be useful.
It also comes in a smaller tube and most auto parts stores also carry little packs of it.







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post #9 of 14 Old 12-11-2015, 10:59 AM
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It's 2,000 before taxes, 1,600 after.
, might be the other way around....
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post #10 of 14 Old 12-11-2015, 11:21 AM
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Quote:
Originally Posted by ELaw View Post
I'm going to be replacing my muffler soon and I'm planning to replace the bolts with stainless ones. That's of course assuming they're not some impossible-to-get odd size, but that's pretty unlikely.

And regardless of the bolts used, put some anti-seize on the threads!
+1 on the anti-seize. I put anti-seize on any bolt, bearing or anything else the might seize that I may want to remove in the future. Otherwise loc-tite.
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