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vwsrus Samba Member
Joined: December 05, 2002 Posts: 221
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Posted: Sat Jun 12, 2010 12:22 pm Post subject: Stripped spark plug threads in head. Help needed |
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The threads in the head are stripped for the spark plug. It blew the plug out last night on the way home.
Is there any fixes WITHOUT taking the motor out and rebuilding the head?
Thanks |
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?Waldo? Samba Member

Joined: February 22, 2006 Posts: 9993 Location: Where?
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Posted: Sat Jun 12, 2010 12:51 pm Post subject: |
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I repaired one on an air-cooled without removing the engine. I used a kit like this:
http://www.amazon.com/CTA-14MM-Spark-Plug-Repair/dp/B002MARBDA
I put that piston near bottom dead center and cranked over the engine a few times without the plug installed in order to blow out any metal shaving from cutting the threads. |
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Alaric.H Samba Member

Joined: March 28, 2009 Posts: 2529 Location: Sandy Springs GA
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1vwjedi Samba Member
Joined: June 12, 2018 Posts: 13 Location: Arizona
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Posted: Tue Jun 24, 2025 2:47 am Post subject: Re: Stripped spark plug threads in head. Help needed |
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I’ve seen many post about repairing spark plug threads with motor in car. And I myself have done it. Of coarse best way is to remove motor and head.
But if you must do it. I learned from an old air cooled vw specialist. Factory trained. And 50 years into the game. I learned a step from him I never heard of that can’t hurt. Non of us want any shavings left to digest in the motor. .
We all have heard about bearing grease in drill bit and tap. To hopefully catch shavings. He showed me how he would open exhaust valve in the cylinder your working on. And hooked a shop vac to exhaust to help suck any loosee debris. Out of cylinder. Can’t hurt. Also a lot of people talk of insert coming out with the plug. And by using a punch to set the new threads into aluminum head usually works well in keeping insert in the head. I’ve followed his procedure doing repairs in car. And never had a problem. |
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zerotofifty Samba Member
Joined: December 27, 2003 Posts: 3740
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Posted: Tue Jun 24, 2025 8:36 am Post subject: Re: Stripped spark plug threads in head. Help needed |
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Timecerts are my prefered repair for this. they tend to stay seated well. Helicoils I have had come out with spark plug removal later
There is a lot of room within the van engine bay to work, so it be easy to do this repair insitu _________________ Sorry About That Chief.
Give Peace a Chance.
Words to live by. |
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