Threaded Hole Repair
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Very good information. Thanks Gary.
I set up a set of 355 gears this past week and had a hard copy of your paper on doing this infront of me and use it as a bible. It is a great rightup and made several copies for future use.
You pass on alot of great information.
I set up a set of 355 gears this past week and had a hard copy of your paper on doing this infront of me and use it as a bible. It is a great rightup and made several copies for future use.
You pass on alot of great information.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
good job!!!! i like the idea of using the vice with piece of stock clamped in it as a platform to work from.....i'm going to make me a filler piece this weekend....thks bob
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
As always Gary, very nice work. Staking the insert helps in keeping the insert as well as the loctite and whatever thread lock is there to begin with. As you said, I believe it will be there for ever. 
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Advanced
Joined: Dec 2006
Posts: 57
Likes: 0
From: Flanders NJ
Nice job! I have a similar problem with a stripped motor mount bolt hole in the block of my 427. I was going to helicoil it but my machinist brother-in-law said a thread replacement (like yours) was the way to go. Now I know why I like that guy. I never actually saw a heli-coil fail before as was a little skeptical. You've made a believer out of me I guess I can stake the top of the threads, since the hole is blind? ...Thanks...Joe
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
Along that same design, I used to use a different type called "Keensert" on VW drag race engines. Very similar to the ones shown, but on the outside threads they had 2-4 what I can only describe as pins sticking straight up that you drove down into the theads to 'lock' the insert. No stakeing required and I never had one fail.
http://www.newmantools.com/kee.htm
Hans
http://www.newmantools.com/kee.htm
Hans
Last edited by Wrencher; Jan 19, 2007 at 04:44 PM.