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Discussion Starter · #1 ·
Should thread sealant be used on vacuum outlets/"trees" in the intake manifold----like for trans vacuum modulator, vacuum advance etc.?
 

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Rod...from a Chrysler?
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I would. My favorite is Permatex 2.
 

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More for Less Racer
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You don't have to, but it never hurts,... both for sealing and to prevent thread galling should you ever need to remove one of them.
 

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I've never used sealant on any nipple/barb vac fitting, just made sure the hose was good or used a clamp if needed.
 

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Discussion Starter · #7 ·
I've never used sealant on any nipple/barb vac fitting, just made sure the hose was good or used a clamp if needed.
Right. Just to be clear, i'm talking about the part of the vacuum outlet that screws into the intake manifold. Not any hoses that connect to the fitting.
 

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Right. Just to be clear, i'm talking about the part of the vacuum outlet that screws into the intake manifold. Not any hoses that connect to the fitting.
Oh I saw trans vac modual and vac advance so assumed nipples. I use thread sealant or Teflon tape on anything into the manifold.
 
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