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 exhuast sealant?
#764259
11/10/06 01:14 PM
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Joined: Oct 2005
Posts: 392
OP
Mudrunner
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does anyone here use any sort of exhaust sealant when putting together exhausts(like around gaskets) I saw a kid at work using something that looked like black rtv, i think it was called walkers acousta seal, but im not positive on the name.
1986 xtra-cab 22re
stock everything
1991 bed
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Re: exhuast sealant?
[Re: 1986xtracab]
#764260
11/10/06 03:21 PM
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Anonymous
Unregistered
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I have been told no sealant is used on the anifold nor exhaust
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Re: exhuast sealant?
[Re: 1986xtracab]
#764261
11/10/06 04:57 PM
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Joined: Jan 2000
Posts: 12,153
Web Wheeler
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I'll use the orange Hi-Temp RTV sealant on exhaust gaskets downstream of the O2 sensor. Put on a thin coat and let it set for 30 minutes or so then assemble. I don't use any on the exhaust header/manifold gasket.
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Re: exhuast sealant?
[Re: 4Crawler]
#764262
11/10/06 05:49 PM
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Joined: Nov 2003
Posts: 827
Rock Warrior
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What if i need some sealant to go btwn downpipe & manifold? The gasket itself is not sealing. Is any high-temp sealant up to the task?
91-22re(408xxxkm & counting with a rebuilt long block)- Flatbed/ Camper/33x10.5BFG-AT/Open 4:88/1.5"BJS/ +2"Shackles/Add-a-Leaf/AirLift/Dual-Batteries
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Re: exhuast sealant?
[Re: allochris]
#764263
11/11/06 12:10 AM
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Joined: Oct 2005
Posts: 392
OP
Mudrunner
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I purchased a tube of the walkers acoutsi seal today and it worked great. i think it was 7.00 for the tube at NAPA.
1986 xtra-cab 22re
stock everything
1991 bed
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Re: exhuast sealant?
[Re: 1986xtracab]
#764264
11/11/06 01:06 AM
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Joined: Apr 2006
Posts: 131
Wheeler
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Copper coat. Isn't that supposed to work best on exhaust type applications? The spray on stuff I heard works best. Spray on one coat, let it get tacky, spray on 1 more...let it get tacky, then put in place. I talked to a guy once who said this works well.
2014 FJ
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Re: exhuast sealant?
[Re: allochris]
#764265
11/11/06 05:23 AM
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Joined: Sep 2002
Posts: 12
Need a Spot
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What if i need some sealant to go btwn downpipe & manifold? The gasket itself is not sealing. Is any high-temp sealant up to the task? If the gasket's not sealing between the exhaust manifold and downpipe it could be a couple of things- check to be sure the surface that the gaskets (2 on my truck)mate to are smooth. When you tighten it up, go around and tighten a little at a time. That's what eventually worked for me <img src="/forums/images/graemlins/cheers.gif" alt="" />
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Re: exhuast sealant?
[Re: R. Carver]
#764266
11/11/06 06:45 AM
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Joined: Nov 2003
Posts: 827
Rock Warrior
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oh, i tried so many times....not even 2 brand new gasket rings...it's just not sealing at the rear(posterior) end of the flange from strange reason. (& that my stud is now cut helps too! <img src="/forums/images/graemlins/rolleyes.gif" alt="" />)
91-22re(408xxxkm & counting with a rebuilt long block)- Flatbed/ Camper/33x10.5BFG-AT/Open 4:88/1.5"BJS/ +2"Shackles/Add-a-Leaf/AirLift/Dual-Batteries
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Re: exhuast sealant?
[Re: allochris]
#764267
11/11/06 03:50 PM
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Joined: Jan 2004
Posts: 383
Mudrunner
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Perhaps somethings cracked! It's a tough place to do a close inspect. Removal is a pain, I know, but if you want to do it right..... <img src="/forums/images/graemlins/mrt.gif" alt="" />
Two gaskets & sealer just tells me something else is wrong here.
'80 4X4 Longbed
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Re: exhuast sealant?
[Re: Stevie]
#764268
11/11/06 08:21 PM
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Joined: Nov 2003
Posts: 827
Rock Warrior
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Nothing's crack, it's the mating gap btwn manifold & downpipe. My suspition is that the dp flange wrapped a little or something during welding when my friend modified my downpipe 2 yrs ago... I remember putting in new gasket donut on each pipe & i can still feel the pulsation of the gas blowing out of the gap...
91-22re(408xxxkm & counting with a rebuilt long block)- Flatbed/ Camper/33x10.5BFG-AT/Open 4:88/1.5"BJS/ +2"Shackles/Add-a-Leaf/AirLift/Dual-Batteries
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