Head bolt hole repairs
Posted: Tue Nov 17, 2009 6:34 am
Anyone stripped out a head bolt hole in the block before? I managed to do just that working on my car this week (See here for details of my incredibly shitty luck).
What is the best way to repair the threads so this won't happen again?
I thought about drilling it out to the next biggest size for the head stud, but ARP said the next size up is 14mm. That is a bit more material than I am comfortable removing.
I was looking around online, and it seems that Heli-coil does not have anything available in the correct threading for our head bolts (M11x1.25).
A company out of Australia called Recoil has a similar product, and has the correct thread pitch available. The only thing that worries me is that the inserts only have 7-8 threads, and i am concerned that would only lead to more issues down the road.
The most promising thing I have found the the Time-Sert insert kit. It is available in the correct threading, is 28mm long, but is not a wire-type insert like the others.
Has anyone had to repair this damage before? If so, what did you use and how has it held up?[/url]
What is the best way to repair the threads so this won't happen again?
I thought about drilling it out to the next biggest size for the head stud, but ARP said the next size up is 14mm. That is a bit more material than I am comfortable removing.
I was looking around online, and it seems that Heli-coil does not have anything available in the correct threading for our head bolts (M11x1.25).
A company out of Australia called Recoil has a similar product, and has the correct thread pitch available. The only thing that worries me is that the inserts only have 7-8 threads, and i am concerned that would only lead to more issues down the road.
The most promising thing I have found the the Time-Sert insert kit. It is available in the correct threading, is 28mm long, but is not a wire-type insert like the others.
Has anyone had to repair this damage before? If so, what did you use and how has it held up?[/url]