Oil check petcocks thread size
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
-
Topic author - Posts: 2
- Joined: Tue Jun 23, 2020 8:55 pm
- First Name: Doug
- Last Name: McCallister
- * REQUIRED* Type and Year of Model Ts owned: 1926
- Location: Ovid, Michigan
- MTFCA Number: 50114
- MTFCI Number: 24799
Oil check petcocks thread size
Been dealing with drips from my oil check petcocks on my 26 Canadian built coupe. Thought that I'd just change them out with new ones, original style, from Lang's. Removed old petcocks but new ones seem to be larger diameter and will not screw in. Anyone have an idea why this might be such a problem? Difference between USA and Canadian built. Lang's part issue?
-
- Posts: 6435
- Joined: Sun Jan 06, 2019 11:18 am
- First Name: Scott
- Last Name: Conger
- * REQUIRED* Type and Year of Model Ts owned: '13, '15, '19, '23
- Location: Clark, WY
- Board Member Since: 2005
Re: Oil check petcocks thread size
1/8 NPT is a tapered thread. There is some chance that the die was not threaded on far enough, I suppose.
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
-
Topic author - Posts: 2
- Joined: Tue Jun 23, 2020 8:55 pm
- First Name: Doug
- Last Name: McCallister
- * REQUIRED* Type and Year of Model Ts owned: 1926
- Location: Ovid, Michigan
- MTFCA Number: 50114
- MTFCI Number: 24799
Re: Oil check petcocks thread size
Scott,
I picked up a die for that thread. After some iffy starts I did manage to run the die down further than threads supplied. Reversed the die and chased threads further. Now catching several more threads and new petcocks will work. Thanks again great info. Doug
I picked up a die for that thread. After some iffy starts I did manage to run the die down further than threads supplied. Reversed the die and chased threads further. Now catching several more threads and new petcocks will work. Thanks again great info. Doug
-
- Posts: 6435
- Joined: Sun Jan 06, 2019 11:18 am
- First Name: Scott
- Last Name: Conger
- * REQUIRED* Type and Year of Model Ts owned: '13, '15, '19, '23
- Location: Clark, WY
- Board Member Since: 2005
Re: Oil check petcocks thread size
I'm glad it worked, but it is a tapered thread and the die is not reversable and still get the designed thread. If it doesn't drip, then no harm no foul and am glad you're moving forward with your project.
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured