Leaks Between Spark Plugs & Head
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Topic author - Posts: 22
- Joined: Mon Jan 07, 2019 12:14 pm
- First Name: David
- Last Name: Tipton
- * REQUIRED* Type and Year of Model Ts owned: 1915 Touring
- Location: Colleyville, TX
- MTFCA Number: 31392
- MTFCI Number: 23748
Leaks Between Spark Plugs & Head
I have a 1915 Touring with the original head. I had the motor and transmission rebuilt about 4 years, alum. pistons, scat crank, stainless valves & seats, etc. Yesterday when I drained and refilled the radiator some accidentally splashed into the 1st and 2nd spark plug dimples on the head. When I started to crank the motor I saw bubbling around the spark plug threads, I tightened the plugs as much as possible but to bubbling is still there. This is happening around all 4 plugs even after tightening. I don't think this is a new problem I happen to notice it because I splashed coolant on the head while refilling.
The plugs are new Champion 25's. I would appreciate all suggestions/help.
Thanks,
David Tipton
Colleyville, TX
The plugs are new Champion 25's. I would appreciate all suggestions/help.
Thanks,
David Tipton
Colleyville, TX
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- Posts: 647
- Joined: Mon Jan 07, 2019 7:40 am
- First Name: CHARLIE
- Last Name: BRANCA
- * REQUIRED* Type and Year of Model Ts owned: "27 Tudor / "23 Touring
- Location: Brick N.J.
- MTFCA Number: 28967
- Board Member Since: 2010
Re: Leaks Between Spark Plugs & Head
Actually kind of common. You'll hear everything from Teflon tape (white & Yellow) to tin foil on the threads. Yellow Teflon is my choice.
Forget everything you thought you knew.
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- Posts: 6496
- Joined: Fri Jan 04, 2019 9:37 pm
- First Name: Steve
- Last Name: Jelf
- * REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
- Location: Parkerfield, Kansas
- MTFCA Number: 16175
- MTFCI Number: 14758
- Board Member Since: 2007
- Contact:
Re: Leaks Between Spark Plugs & Head
It's a problem only if it lowers compression or if you let a lot of water leak into the cylinders, but foil or Teflon tape are OK. Some are afraid the tape will unground the plugs, but the threads will cut through it and contact the head.
The inevitable often happens.
1915 Runabout
1923 Touring
1915 Runabout
1923 Touring
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- Posts: 324
- Joined: Sun Jan 06, 2019 2:15 pm
- First Name: George P
- Last Name: Clipner
- * REQUIRED* Type and Year of Model Ts owned: Late '26 Touring
- Location: LakeOzark,Missourah
- MTFCI Number: 18665
Re: Leaks Between Spark Plugs & Head
I had the same issue on my Z Head. I have used tin foil but had issues removing the plugs. I use anti seize now and no issues. A few years back, Champion made some new X's with bad threads that would leak. The new ones I'm running don't have that issue but did have seepage on the Z Head. Anti seize works for me.
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- Posts: 153
- Joined: Tue Jan 08, 2019 1:18 pm
- First Name: Kirk
- Last Name: Peterson
- * REQUIRED* Type and Year of Model Ts owned: 27 Touring 24 Coupe
- Location: Santa Fe, NM
- MTFCA Number: 345
- MTFCA Life Member: YES
- MTFCI Number: 141
- Board Member Since: 2005
Re: Leaks Between Spark Plugs & Head
George
Anti seize works good for me too.
Anti seize works good for me too.
Kirk Peterson
Santa Fe NM
Santa Fe NM
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Topic author - Posts: 22
- Joined: Mon Jan 07, 2019 12:14 pm
- First Name: David
- Last Name: Tipton
- * REQUIRED* Type and Year of Model Ts owned: 1915 Touring
- Location: Colleyville, TX
- MTFCA Number: 31392
- MTFCI Number: 23748
Re: Leaks Between Spark Plugs & Head
Any particular brand of Anti Seize?George N Lake Ozark wrote: ↑Wed May 08, 2019 5:19 pmI had the same issue on my Z Head. I have used tin foil but had issues removing the plugs. I use anti seize now and no issues. A few years back, Champion made some new X's with bad threads that would leak. The new ones I'm running don't have that issue but did have seepage on the Z Head. Anti seize works for me.
Thanks,
Dave Tipton
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Topic author - Posts: 22
- Joined: Mon Jan 07, 2019 12:14 pm
- First Name: David
- Last Name: Tipton
- * REQUIRED* Type and Year of Model Ts owned: 1915 Touring
- Location: Colleyville, TX
- MTFCA Number: 31392
- MTFCI Number: 23748
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- Posts: 153
- Joined: Tue Jan 08, 2019 1:18 pm
- First Name: Kirk
- Last Name: Peterson
- * REQUIRED* Type and Year of Model Ts owned: 27 Touring 24 Coupe
- Location: Santa Fe, NM
- MTFCA Number: 345
- MTFCA Life Member: YES
- MTFCI Number: 141
- Board Member Since: 2005
Re: Leaks Between Spark Plugs & Head
What ever the Parts store has in stock.
Kirk Peterson
Santa Fe NM
Santa Fe NM
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- Posts: 107
- Joined: Sun Jan 06, 2019 1:57 pm
- First Name: john
- Last Name: hardiman
- * REQUIRED* Type and Year of Model Ts owned: 26 coupe
- Location: stoughton, ma
Re: Leaks Between Spark Plugs & Head
Cooper.... takes the heat...use it on engines I have rebuilt ..non t.
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- Posts: 4967
- Joined: Sat Jan 05, 2019 1:57 pm
- First Name: Mark
- Last Name: Gregush
- * REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1920 Dodge touring, 1948 F2 Ford flat head 6 pickup 3 speed
- Location: Portland Or
- MTFCA Number: 52564
- Board Member Since: 1999
Re: Leaks Between Spark Plugs & Head
I use ether anti-seize or white teflon tape, which ever I have at hand at the time. I have some old anti-seize with lead in it (known in California to cause all kinds of nasty things to the body if you eat it! ), but as said above what ever brand.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup