Old 10-12-2019, 12:58 PM
ITSBACK's Avatar
Ultimate Warrior
Join Date: Jan 2008
Location: NEW JERSEY
Posts: 2,672
Default Temperature sensor location

I have an offenhauser dual quad intake on my motor. Passenger side front has temperature sensor. Drivers side has just threaded hole. Iím assuming itís the same size. I guess I need a plug there. What is best to use and what size? Yes I completely forgot and filled with antifreeze. Reminded myself for days and remembered when it stammered time flow out,ugh!!!
Thank you!
Old 10-12-2019, 01:20 PM
JLMounce JLMounce is offline
Ultimate Warrior
Join Date: Sep 2005
Location: Greeley, Colorado
Posts: 2,003
Send a message via AIM to JLMounce

I want to say it's 7/8" Or possibly 15/16" It's a fairly large hole.
1969 Pontiac Firebird
Old 10-12-2019, 04:27 PM
Schurkey Schurkey is offline
Ultimate Warrior
Join Date: Aug 2002
Location: The Seasonally Frozen Wastelands
Posts: 4,524

The tape-measure measurement of the hole is helpful, but not useful as-is. The hole will be pipe-thread. Pipe thread is measured based on the ID of the pipe, so the size of the hole has no relation to the markings on a tape measure. the nominal size of the hole will be much smaller than the tape measure indicates.

It's probably 1/2" pipe thread. Pipe-thread plugs are available at every parts house or home-improvement center in America. Given a choice, I prefer brass to steel; steel plugs tend to seize in aluminum manifolds. I've seen, but never used aluminum or stainless steel plugs. The last ones I bought were brass, and came from Amazon.

Allen- or "Hex" recess plugs tend to look nicer than the style that have a big hex "bolt head" sticking up out of them. They're harder to remove if they seize, though.



Whatever plug you select, use some anti-gall thread paste as a sealer. My preference is Loctite/Permatex 592 "PST" (Pipe Sealer with Teflon) This stuff has a hardening chemical in it, somewhat like Loctite thread lockers. Wonderful sealer. Prevents thread seizure. Makes disassembly a breeze. Available in most any automotive parts store, but not likely to be found at Lowe's, Home Despot, etc.

Last edited by Schurkey; 10-12-2019 at 04:35 PM.
Old 10-12-2019, 11:56 PM
ITSBACK's Avatar
Ultimate Warrior
Join Date: Jan 2008
Location: NEW JERSEY
Posts: 2,672

Thank you for the info guys!!!
Old 10-13-2019, 06:25 AM
steve25 steve25 is offline
Ultimate Warrior
Join Date: May 2008
Location: Westchester NY
Posts: 10,087

X2, 1/2" pipe it is.
If you need a Radio at the beach your missing the whole point!

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 02:26 PM.


About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.


Cold Case Radiators

Cold Case Radiators is a Max Performance company that produces high end aluminum performance radiators at a price point that won't break the bank. Polished and stamped tanks. 2 rows of 1" tubes. Lifetime Warranty.


GTOG8TA.com is a Max Performance company that manufacturers parts for the 04-06 GTO, 08-09 G8, and 93-02 Firebird/Trans Am platforms.

Copyright © 2017