Thread sealant, heater hose, temp sensor

[SeaBiscuit68]

Anybody have any advice on thread sealant? I'm putting in a new brass heater hose fitting in an aluminum intake manifold and also a brass temp sensor in same manifold. I'm changing them to lower the profile for clearincing a new distributor. Previously both had teflon tape. Somewhere in my failing memory is the idea that teflon tape isn't a good idea for those. Maybe the chance that bits could get into the passages or hinder the conductivity of the sensor. What are your thoughts? Use nothing, some proven goopy stuff, or is the tape fine?

SB

 

[SteveL]

I've just used tape. Been fine so far.

 

[Jfryjfry]

Tape should work fine. Just be smart about where and how much. (You don’t need 9 wraps and don’t have it below the fitting - just on the threads.

 

[Viperwolf1]

I prefer the teflon paste. Never had a problem with the grounds.

 

[blubuckaroo]

It was recommended to me that Teflon tape wasn't a good idea there. Any additional resistance in the gauge circuit can affect the accuracy.

I can't think of a place that teflon tape is appropriate on a vehicle. The stuff can plug cooling passages, hydraulic lifters, needle valves, and valve bodies. Well maybe the differential fill and drain plugs would be ok.
Even if you're real careful not to wrap it past the threads, there's still the chance that the next time that port gets something threaded in, some of the previous tape could be pushed into the port.
There are way better products available.

 

[Steve83]

Threadlocker is also thread sealant. Blue or red is fine.

 

[jbawall]

What about ARP thread sealer? I am using it on my engine build on every bolt that may need it, for instance the lower row of bolts on both heads. I would imagine it would work in your case, but don't know for sure.

https://www.jegs.com/i/ARP/070/100-...RP&gclid=CJagibX8h-MCFRGPxQIdXKAMLQ&gclsrc=ds

 

[SeaBiscuit68]

I don't know, I'm still on the fence. I have the nagging memory of not using tape for the reasons I mentioned. I'll probably use some liquid sealant or maybe start with nothing and see if I have leaks. Thanks all.
SB

 

[LilMixedUp]

permatex makes sensor safe sealant... I've had no issues over the past few years

 

[bmc69]

No teflon tape allowed in our shop for numerous reasons. All threads are sealed with various teflon paste products or with Loctite thread sealants...the blue "lipstick" stuff is fantastic.

 

[lars]

What the others said about paste. Loctite 567 is a good example. A tube will last for years.

 

[73azbronco]

ARP paste although the teflon plumbing paste from Ace is I think the same. I verified zero ohm loss across threads with that stuff.