Thread pitch and Diameter Question
Thread Starter
|
Senior User
Joined: Feb 2004
Posts: 162
Likes: 0
From: Denver, CO
Thread pitch and Diameter Question
What is the thread pitch and diameter of the coolant plug on the passenger side of the 7.3 IDI? My model year is 94.
I would like to make a fitting so I can drain my coolant without making such a mess.
Thanks,
Chris
I would like to make a fitting so I can drain my coolant without making such a mess.
Thanks,
Chris
Posting Guru
Joined: Mar 2005
Posts: 1,701
Likes: 0
From: KY
It is going to be a pipe thread. Probably 3/8 or 1/2.
If it a SAE thread it will have a o-ring seal. You don't see that much on engines because most sensors or switches are a pipe thread. Rarely will you see that, basically, because of the added machine work on the engine casting to be able to use an SAE or Metric thread plug or sensor.
If it a SAE thread it will have a o-ring seal. You don't see that much on engines because most sensors or switches are a pipe thread. Rarely will you see that, basically, because of the added machine work on the engine casting to be able to use an SAE or Metric thread plug or sensor.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Standard pipe thread.
I can't remember, I think it may be 1/4" pipe thread.
You should be able to get a block drain at an auto parts store that will thread right in.
Catfish has me wondering now, may be 3/8" pipe thread, I know it is not 1/2" though.
I can't remember, I think it may be 1/4" pipe thread.
You should be able to get a block drain at an auto parts store that will thread right in.
Catfish has me wondering now, may be 3/8" pipe thread, I know it is not 1/2" though.
Elder User
Joined: Oct 2006
Posts: 597
Likes: 0
NPT = "National Pipe Thread Tapered"
The term "pipe thread" is slang for NPT.
There's "standard" and there's "metric" and then there's "Canadian"
Sorry, I couldn't resist!!! ...
In the US 1/4" NPT specifies diameter, pitch, and taper (0.540", 18, 0.05556). There's no ambiguity and it is a standard. The entire world may not use it, but it's still a standard.
The term "pipe thread" is slang for NPT.
There's "standard" and there's "metric" and then there's "Canadian"
Sorry, I couldn't resist!!! ...
In the US 1/4" NPT specifies diameter, pitch, and taper (0.540", 18, 0.05556). There's no ambiguity and it is a standard. The entire world may not use it, but it's still a standard.
Thread Starter
|
Senior User
Joined: Feb 2004
Posts: 162
Likes: 0
From: Denver, CO
1/4 Npt
That sounds easy enough for me to make a fitting that will help me drain my system.
Thanks to all,
Chris
Thanks to all,
Chris
Trending Topics
Temporarily Deactivated
Joined: Apr 2008
Posts: 410
Likes: 0
NPT = "National Pipe Thread Tapered"
The term "pipe thread" is slang for NPT.
There's "standard" and there's "metric" and then there's "Canadian"
Sorry, I couldn't resist!!! ...
In the US 1/4" NPT specifies diameter, pitch, and taper (0.540", 18, 0.05556). There's no ambiguity and it is a standard. The entire world may not use it, but it's still a standard.
The term "pipe thread" is slang for NPT.
There's "standard" and there's "metric" and then there's "Canadian"
Sorry, I couldn't resist!!! ...
In the US 1/4" NPT specifies diameter, pitch, and taper (0.540", 18, 0.05556). There's no ambiguity and it is a standard. The entire world may not use it, but it's still a standard.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Elder User
Joined: Oct 2006
Posts: 597
Likes: 0
If only it wasn't soooo cold there, I'd move in a second -- I spent enough time in Toronto to find a new bride...
Probably the most amusing thing I saw there was a couple of young guys laying carpet. They had a tape measure marked in both inches and meters, and were calling out measurements in inches. When I ribbed them about it, they got nervous and started calling out metric.
Probably the most amusing thing I saw there was a couple of young guys laying carpet. They had a tape measure marked in both inches and meters, and were calling out measurements in inches. When I ribbed them about it, they got nervous and started calling out metric.
Thread
Thread Starter
Forum
Replies
Last Post
Rollin.IH.Coal
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Jun 22, 2013 08:47 AM
RRRAVEN
1999 - 2016 Super Duty
2
Nov 17, 2010 01:48 PM
scotjonscot
1973 - 1979 F-100 & Larger F-Series Trucks
2
Jul 14, 2009 05:19 PM