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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Should sealant be used on the vacuum outlets on the intake manifold?
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Topic: Should sealant be used on the vacuum outlets on the intake manifold? (Read 1303 times)
Stewart G Griffin
Senior Member
Posts: 3324
Should sealant be used on the vacuum outlets on the intake manifold?
«
on:
September 14, 2021, 08:44:47 PM »
Should thread sealant be used on the vacuum outlets in the intake manifold----like for trans vacuum modulator, vacuum advance etc.?
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VileZambonie
Global Moderator
Senior Member
Posts: 19010
Re: Should sealant be used on the vacuum outlets on the intake manifold?
«
Reply #1 on:
September 15, 2021, 06:14:57 PM »
Negative, dry installation, no clamps or sealants with the exception of evap hoses which should have a tension clamp.
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74 GMC
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75 K5
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84 GMC
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85 K20
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86 k20
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Stewart G Griffin
Senior Member
Posts: 3324
Re: Should sealant be used on the vacuum outlets on the intake manifold?
«
Reply #2 on:
September 18, 2021, 01:30:49 PM »
Ok. But just to make clear, i meant the threads the screw
into
the intake manifold, not the hoses that connect to the fitting.
«
Last Edit: September 18, 2021, 05:42:55 PM by Stewart G Griffin
»
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JohnnyPopper
Senior Member
Posts: 2549
Old Goof
Re: Should sealant be used on the vacuum outlets on the intake manifold?
«
Reply #3 on:
September 28, 2021, 04:30:56 PM »
I use pipe tape on those threads.
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1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400 Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction
Shifty
Junior Member
Posts: 948
I bleed Bowtie red...
Re: Should sealant be used on the vacuum outlets on the intake manifold?
«
Reply #4 on:
September 28, 2021, 05:21:56 PM »
Quote from: JohnnyPopper on September 28, 2021, 04:30:56 PM
I use pipe tape on those threads.
Liquid version of the same thing for me.
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87 V20 Standard Cab Longbed (current)
87 R30 3+3 Longbed (days of yore)
98 C2500 ext cab longbed
VileZambonie
Global Moderator
Senior Member
Posts: 19010
Re: Should sealant be used on the vacuum outlets on the intake manifold?
«
Reply #5 on:
September 28, 2021, 05:49:58 PM »
So let's rephrase the question like this: Should thread sealant be used on pipe threads? Answer = Yes
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/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
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Should sealant be used on the vacuum outlets on the intake manifold?