Anyone use Time-sert thread repair inserts for head bolt repair?

[Kibokojoe]

Last night tightened the head on my m30 and found out one of the bolt holes is stripped. Been looking on line and it appears that the Time-Sert inserts are the way to go. Has anyone used these to repair the head bolt holes in a iron block. If so what length of insert. I know the threads are M12 x 1.75. The blind holes are around 33-34 mm deep but you need about 6-7mm of free space at the bottom of the hole. The standard length sizes are 18, 24 and 30. I am leaning towards 24. Lots of write-ups for aluminum block but have not seen anything on a iron block repair

Anyone?

[shogun]

I found
TIME-SERT ® FREQUENTLY ASKED QUESTIONS
++ TIME-SERT Frequently Asked Questions ++ Time-Sert thread repair questions and answers for (http://www.timesert.com/html/faq.html)

Thread Repairs (http://www.metalockaustralia.com/thread_repairs.php)


Metalock Suits Following Materials: Aluminum, Cast iron, Steel, Brass etc,.
Products (http://www.metalockaustralia.com/products.php)

TIME-SERT® on GSPD head bolt - Page 2 - ADVrider (http://www.advrider.com/forums/showthread.php?t=668678&page=2)

Any other Heli-Coil junkies in here? - Page 2 (http://www.millerwelds.com/resources/communities/mboard/showthread.php?14611-Any-other-Heli-Coil-junkies-in-here/page2)

I personally have no experience with these.

[Kibokojoe]

Gales says go with Time-Sert but I need to know the length of the inserts. Bolts are M12 x 1.75. Based on my calculations I leaning towards the 24mm length insert



Most sites say stay away from Helicoil for head repairs