Electric fan's coolant temperature sensor question
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Electric fan's coolant temperature sensor question
Any idea who, if anyone, makes a coolant temperature sensor that uses a 1/2" NPT thread, instead of the stock 3/8" NPT thread?
When I swapped my heads, they have 1/2" holes where the sensor would go, but when I used a reducer it puts the sensor too close to the header tube IMO...
When I swapped my heads, they have 1/2" holes where the sensor would go, but when I used a reducer it puts the sensor too close to the header tube IMO...
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Sure, I could do that, just don't see another spot...but the existing wire needs to be lengthened anyway.
I also considered just using a simple ON-OFF toggle switch, so I can manually turn it on or off when ignition is ON, but am afraid I may forget to turn it ON when needed...
I also considered just using a simple ON-OFF toggle switch, so I can manually turn it on or off when ignition is ON, but am afraid I may forget to turn it ON when needed...
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
You need what's called a "face bushing".
This will reduce the thread size down without moving it further out much. Kind of like a helicoil does.
You probably won't be able to remove it though once installed. Unless you teflon tape the outer threads and use something with more friction on the inner threads.
This will reduce the thread size down without moving it further out much. Kind of like a helicoil does.
You probably won't be able to remove it though once installed. Unless you teflon tape the outer threads and use something with more friction on the inner threads.
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
You need what's called a "face bushing".
This will reduce the thread size down without moving it further out much. Kind of like a helicoil does.
You probably won't be able to remove it though once installed. Unless you teflon tape the outer threads and use something with more friction on the inner threads.
This will reduce the thread size down without moving it further out much. Kind of like a helicoil does.
You probably won't be able to remove it though once installed. Unless you teflon tape the outer threads and use something with more friction on the inner threads.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Any contractor supply house could have one.
I usually just order that stuff from mcmaster.com
By the time you spend 2 hours running around town looking for a 12 cent part, you could have it just delivered to your door. It's basically a hardware store that has every tool/part/fitting/material known to man.
I usually order other stuff also, just so the warehouse guy doesn't feel bad boxing up and shipping just one 12 cent part.
I usually just order that stuff from mcmaster.com
By the time you spend 2 hours running around town looking for a 12 cent part, you could have it just delivered to your door. It's basically a hardware store that has every tool/part/fitting/material known to man.
I usually order other stuff also, just so the warehouse guy doesn't feel bad boxing up and shipping just one 12 cent part.
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Thanks alot. 
That will work fine, even with an aftermarket sender. The common reducer like I used put the sender out about 3/4" too far (and too close to the header tube) when all was said and done.
It looks like it's about 3 bucks, which isn't bad at all.
Part # 4429K524 1/2" to 3/8" face bushing...
That will work fine, even with an aftermarket sender. The common reducer like I used put the sender out about 3/4" too far (and too close to the header tube) when all was said and done.
It looks like it's about 3 bucks, which isn't bad at all.
Part # 4429K524 1/2" to 3/8" face bushing...
Last edited by rel3rd; Mar 18, 2007 at 08:02 PM.
