Brian Bearor
Well-Known Member
What thread sealant would you recommend for exhaust manifold studs. Appreciate the guidance.
Thread sealant
- Thread starter Brian Bearor
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Rug_Trucker
Love my 3.8 Buicks
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RTV. Then use anti-sieze on the outside.
I do just like Rug said. I use red high temp RTV going into the head, but I use Permatex ceramic brake grease on the outside threads, simply because anti seize has a reputation of getting everywhere and the brake grease stays where you apply it. lol It also has a maximum temp of 3000F so it's not going anywhere. I slob it on pretty good.
Charrlie_S
Well-Known Member
I use "Lock Tite" thread sealant on the studs.
MidnightSwinger
Well-Known Member
Permatex thread sealer
another vote for p-tex/loc-tite thread sealer.
buy the big tube, you'll wind up using it on a lot more things than you think!
and 100% some variant of anti-seize on the nut side.
buy the big tube, you'll wind up using it on a lot more things than you think!
and 100% some variant of anti-seize on the nut side.
Brian Bearor
Well-Known Member
Is it long or short side of the stud in the engine? Thanks
the side that threads in...
(it's the short side)
(it's the short side)
Coarse threads(short end) into head, manny nuts are fine thread,.....so You can't put them in wrong.......unless You try really really hard.....please don't....
Aviation gasket sealer or PST592. Course thread goes into head..
Brian Bearor
Well-Known Member
Tried to install a couple before I left town. Quickly. Didn't notice the different threads. Took the better route and decided to take my time... and ask the experts. Appreciate the information
Johnny Dart
Well-Known Member
Use actual THREAD SEALANT.
This is good as it gets.
This is good as it gets.
Agreed, just like I said PST592...
Have nothing negative to say about this. One tube has lasted me 8 years and 6 restorations.
ARP 100-9904 ARP PTFE Sealers | Summit Racing
ARP 100-9904 ARP PTFE Sealers | Summit Racing
If 1.69 ounces has lasted you 8 years, you ain't building enough engines. lol
My machine shop buddy builds the long blocks for me. I just need to seal the accessory bolts/studs!
slantsixdan
=..=
It's worth your time (now) and trouble (less of it now and later) to get the right stuff. The wrong stuff will not seal and/or will get pushed into the cooling system and clog the works. The right stuff is Loctite № 542 or № 592.
Read this (also, this, and this). Note that it is very much worth your while to get the good gaskets for the manifolds-to-head and intake-to-exhaust junctions.
mopowers
Well-Known Member
Has anyone used anything that doesn't work?
I've used proper thread sealant, rtv, teflon pipe sealant for plumbing, teflon tape, etc. Everything I've used has worked fine. I think this is one of those instances where you don't need to overthink it. Use what you've got and move on to something more important.
I've used proper thread sealant, rtv, teflon pipe sealant for plumbing, teflon tape, etc. Everything I've used has worked fine. I think this is one of those instances where you don't need to overthink it. Use what you've got and move on to something more important.
Brian Bearor
Well-Known Member
What gaskets would you recommend? I have seen a thicker gasket on a YouTube video to close the gap as the manifolds shift etc.
Loc-tite 592 is the same as the P-tex 59235 and i would suspect the same as the stuff in the ARP tube.
slantsixdan
=..=
The ones you get to if you click the link that says "Good gaskets" in post #17 of this thread we're in right now. You might have to click through another link from the first link, I forget.
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