Thread Repair
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Re: Thread Repair (TJ96CE)
I've used heli-coils and they work very well. If you have minor thread damage from cross threading or overtightening where you "mashed" the threads, then you could try the same size tap first. If you actually ripped out the threads, then it's probably heli-coil time though, or, in very simple cases, you could just drill and tap it out one size larger and use a bigger bolt.
Le Mans Master
Joined: Jun 1999
Posts: 6,272
Likes: 2
From: Chino Valley AZ
Cruise-In I Veteran
Cruise-In II Veteran
Currently Corvette-less
Re: Thread Repair (Vince Ivanc)
I take it that the messed up thread is the sparkplug threads inside the head. You can buy a thread chaser and use it while the head is still on the car.
The biggest obstacle (besides getting the darn thing lined up) and (turning it when you finally do get it lined up) is keeping metal outside the combustion chamber.
Don't forget to lower the piston in the cylinder if you do this ~ and use plenty of grease on the thread chaser in hopes that it will catch and hold the metal filings.
:seeya Purp
The biggest obstacle (besides getting the darn thing lined up) and (turning it when you finally do get it lined up) is keeping metal outside the combustion chamber.
Don't forget to lower the piston in the cylinder if you do this ~ and use plenty of grease on the thread chaser in hopes that it will catch and hold the metal filings.
:seeya Purp
Thread Starter
Advanced
Joined: Jan 2002
Posts: 60
Likes: 0
From: Glen Ellyn IL
Re: Thread Repair (PurpleC4)
Since I have never done this(and luck seams to be against me) perhaps I should have someone ELSE DO this. What would be a reasonable price(seams like 1 hour labor)????
Tom
Tom
Le Mans Master
Joined: Jun 1999
Posts: 6,272
Likes: 2
From: Chino Valley AZ
Cruise-In I Veteran
Cruise-In II Veteran
Currently Corvette-less
Re: Thread Repair (TJ96CE)
A good mechanic should be able to do this job in less than 30 minutes ~~~ Taking the following into account:
1. The cylinder that he has to chase the threads on has reasonable access
2. The threads aren't totally whacked :sad:
Plan on paying between $50 to $75 for the service.
:seeya Purp
1. The cylinder that he has to chase the threads on has reasonable access
2. The threads aren't totally whacked :sad:
Plan on paying between $50 to $75 for the service.
:seeya Purp
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