Spark Plug Copper Crush Rings.....

Discuss all things Model T related.
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
MichaelPawelek
Posts: 76
Joined: Sun Jan 06, 2019 2:01 pm
First Name: Michael
Last Name: Pawelek
Location: Brookshire, Texas
Board Member Since: 1999

Spark Plug Copper Crush Rings.....

Post by MichaelPawelek » Thu Jan 17, 2019 12:34 pm

Technically can these be used more than once to work properly?


signsup
Posts: 59
Joined: Thu Jan 10, 2019 12:56 pm
First Name: Robert
Last Name: Brough
Location: Winston, GA
MTFCA Number: 31990
MTFCI Number: 31990
Board Member Since: 2015

Re: Spark Plug Copper Crush Rings.....

Post by signsup » Thu Jan 17, 2019 12:43 pm

Probably the wrong thing to do, but, being Scottish, I flip them over and use them until a visual inspection leads me to believe they are beyond their use. But, again, this is on other vintage vehicles. I was under the impression that Model T spark plugs can be installed too deep in the cyl and I thread mine in until I feel I am getting good consistant spark.
Why do we drive on parkways and park on driveways?

1915 Model T War Wagon
1927 Model T Depot Hack
1942 Ford GPW
1943 Chevy 1 1/2 ton truck
1945 Studebaker Weasel

User avatar

Steve Jelf
Posts: 2108
Joined: Fri Jan 04, 2019 9:37 pm
First Name: Steve
Last Name: Jelf
Location: Parkerfield, Kansas
MTFCA Number: 16175
MTFCI Number: 14758
Board Member Since: 2007
Contact:

Re: Spark Plug Copper Crush Rings.....

Post by Steve Jelf » Thu Jan 17, 2019 1:06 pm

Different kinds were used over the years. I think some can be reused, depending on their condition. I just put in new ones because the old ones are usually too damaged.
The inevitable often happens.
1915 Runabout
1923 Touring

User avatar

Rich Eagle
Posts: 2100
Joined: Fri Jan 04, 2019 10:51 am
First Name: Richard
Last Name: Eagle
Location: Idaho Falls, ID
MTFCA Number: 1219
Contact:

Re: Spark Plug Copper Crush Rings.....

Post by Rich Eagle » Thu Jan 17, 2019 1:08 pm

I like them on other applications. My Roof head and a couple non-Fords use them. I bought a box at a closeout sale 30 years ago. I imagine there are some old boxes around somewhere and folks don't know what they are. I reuse them rather than using up the fresh ones.
Rich
When did I do that?


Mindless Automaton
Posts: 125
Joined: Mon Jan 07, 2019 1:47 am
First Name: Kep
Last Name: Kerensky
Location: Northland
Board Member Since: 2011
Contact:

Re: Spark Plug Copper Crush Rings.....

Post by Mindless Automaton » Fri Jan 18, 2019 2:04 am

Mine has pipe threads, no crush washer. But i have expanded copper crush rings by soaking them in water & freezing them.


Hal
Posts: 184
Joined: Mon Jan 07, 2019 12:08 pm
First Name: Hal
Last Name: Davis
Location: SE Georgia
Board Member Since: 2005

Re: Spark Plug Copper Crush Rings.....

Post by Hal » Fri Jan 18, 2019 7:19 am

I thought we were talking about the ones that go inside the take apart plugs.


Topic author
MichaelPawelek
Posts: 76
Joined: Sun Jan 06, 2019 2:01 pm
First Name: Michael
Last Name: Pawelek
Location: Brookshire, Texas
Board Member Since: 1999

Re: Spark Plug Copper Crush Rings.....

Post by MichaelPawelek » Fri Jan 18, 2019 8:37 am

Sorry I was not more specific. I was referring to the Copper rings found on more modern plugs......


Marc Roberts
Posts: 10
Joined: Tue Jan 08, 2019 9:56 pm
First Name: Marc
Last Name: Roberts
Location: York, PA

Re: Spark Plug Copper Crush Rings.....

Post by Marc Roberts » Fri Jan 18, 2019 8:40 am

It couldn't hurt to anneal them.

User avatar

Steve Jelf
Posts: 2108
Joined: Fri Jan 04, 2019 9:37 pm
First Name: Steve
Last Name: Jelf
Location: Parkerfield, Kansas
MTFCA Number: 16175
MTFCI Number: 14758
Board Member Since: 2007
Contact:

Re: Spark Plug Copper Crush Rings.....

Post by Steve Jelf » Fri Jan 18, 2019 11:04 am

Oh. If the question was about the ones between the plug and the head, I agree with Marc. For any new-to-T folks reading this, you don't use them on Model T plugs, which have a ½" pipe thread.
The inevitable often happens.
1915 Runabout
1923 Touring

User avatar

Pep C Strebeck
Posts: 146
Joined: Sun Jan 06, 2019 11:12 am
First Name: Joseph
Last Name: M
Location: MI
MTFCA Number: 0

Re: Spark Plug Copper Crush Rings.....

Post by Pep C Strebeck » Fri Jan 18, 2019 5:39 pm

Rich Eagle wrote:
Thu Jan 17, 2019 1:08 pm
I bought a box at a closeout sale 30 years ago. I imagine there are some old boxes around somewhere and folks don't know what they are.
Rich
Like Rich, I had gotten some boxes (of different sizes) at a swap meet or auction (I don't remember). With those in the cabinet I should have all my needs covered. The holder that hangs on the pegboard above the bench should last me quite awhile.
IMG_6398_2.JPG
Now if I could just find some new gaskets for the take-apart plugs I would be happy.
"Remember son, there are two ways to do this: The right way, and your way” Thanks Dad, I love you too.

LOOKING FOR A LUFKIN Model 1671A Center Punch.

User avatar

Steve Jelf
Posts: 2108
Joined: Fri Jan 04, 2019 9:37 pm
First Name: Steve
Last Name: Jelf
Location: Parkerfield, Kansas
MTFCA Number: 16175
MTFCI Number: 14758
Board Member Since: 2007
Contact:

Re: Spark Plug Copper Crush Rings.....

Post by Steve Jelf » Fri Jan 18, 2019 10:14 pm

Now if I could just find some new gaskets for the take-apart plugs I would be happy.
http://dauntlessgeezer.com/DG95.html
IMG_0621 copy.JPG
The inevitable often happens.
1915 Runabout
1923 Touring

Post Reply Previous topicNext topic