temp probe thread sealer
Thread Starter
Racer
Joined: Jun 2002
Posts: 326
Likes: 1
From: washington
temp probe thread sealer
i have just bought a 63 roadster. i'm now blowing the dust off tools that i have not used in 20 years. so, please forgive the simplistic questions, it's been a long time.
my question is in regards to the temp sensor that screws in next to #1 spark plug (least that where i think it goes). should i use thread sealer on the threads, and if so what kind.
my question is in regards to the temp sensor that screws in next to #1 spark plug (least that where i think it goes). should i use thread sealer on the threads, and if so what kind.
Le Mans Master
Joined: Jan 2002
Posts: 8,913
Likes: 283
Re: temp probe thread sealer (wirenut)
I used Teflon tape, but that is not the right application. It can block of the ground and cause incorrect temp readings. I used it and by luck of the draw, my unit works just fine. I would just dab a bit of silicone on the top portion of the sending unit. Not very much is required. Just put some silicone on your finger and put a light coat on the top 2 o 3 threads that go into the intake. When it is installed neatly wipe the extra off with a shop rag and let set for a couple of hours.
If you are replacing it, this may be the problem right now. But for the 4 or 5 bucks I would store the original and install the new.
If you are replacing it, this may be the problem right now. But for the 4 or 5 bucks I would store the original and install the new.
Melting Slicks
Joined: Oct 2001
Posts: 3,025
Likes: 12
From: Pleasant Grove AL
Re: temp probe thread sealer (ghostrider20)
Rather than the teflon tape, ther is a teflon sealer. Apply just a litle to the very bottom of the threads. The threads are tapered and the sealing occurs at the bottom first. Leave the rest bare for good electrical conductivity. Otherwise, you will likely get a false low signal to the temp gauge.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Re: temp probe thread sealer (396 RAT)
The temp sender on a '63 goes in the intake manifold, adjacent to the thermostat housing; Corvette heads didn't have a hole on the exhaust side for temp senders until '68 or '69. You must have later heads.
Thread Starter
Racer
Joined: Jun 2002
Posts: 326
Likes: 1
From: washington
Re: temp probe thread sealer (JohnZ)
Yes, i do have later heads. the engine is not the origanal. it's a 355 crate motor from acompany called lingenfelter. i'm still trying to get info on it.
Melting Slicks
Joined: Aug 2000
Posts: 3,077
Likes: 2
From: The Garden Spot of the Garden State
Re: temp probe thread sealer (wirenut)
...if you really have a lingenfelter engine, you have a SERIOUS ride....first try not using any sealant at all..then progess up through the options listed here...welcome to the forum!!
Racer
Joined: Jan 2002
Posts: 290
Likes: 0
From: milwaukee wi
Re: temp probe thread sealer (396 RAT)
the way i remember it is that the sending unit is brass and has a slight taper machined into it. if tightened, i don't see how it can leak unless the manifold threads are goofy. should not need any sealant.
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Moderator
Joined: Jun 1999
Posts: 7,117
Likes: 51
From: Dove Mountain Arizona
Re: temp probe thread sealer (64BB)
You are correct in that it is a 'pipe' thread (tapered) and should not leak. They do however. Like said above, try it dry first and work your way up the evolutionary ladder..... :yesnod:
