quiksilver458

Hey guys,

I am in the process of rebuilding the motor. I have plans to install all the new sensors tonight, before installing block in car.. What are your guys recommendations for sealing the sensors off in the block?
I will be installing the radiator fan temp sensor, oil temp sensor, knock sensor ect..

Thread lock or Teflon tape? What works best - and what is recommended.

Thanks!!

CFI-EFI

Everything you mentioned has pipe threads. Also, all of those sensors have to be grounded to work properly. Pipe threads are tapered and a thread locker is absolutely not needed. I would stay away from Teflon tape for fear of insulating the sensor. Teflon paste would be my sealant of choice.

RACE ON!!!

STL94LT1

The new sensors should already have some kind of thread sealant on the threads.

quiksilver458

They do not have any kind of thread sealant on them.. Does pipe threads mean I do not have to use anything on them? The ones I removed from the block show absolutely no signs or reminance of any kind of seal...

Grace91

I use Loctite thread sealant.

quiksilver458

That is what I was planning on using. I have used it in the past, and never had issues. Was curious what everyone else did/does...

redbullapril23

loctite... ugh... i think you want to use teflon. what if you need to get it out? just a thought.
all the sensors ive replaces so far came with teflon on them.
just my 2 cents
good luck your friend
Sean