Topic: Exhaust Bolt Repair - Helicoil or Time Sert?

[Finnigan]

One exhaust bolt hole doesn't grab anymore, thinking of replacing bolts with studs but first will repair the damaged threads.

Got a time sert kit ($$$) but not that I look at the space there might not be enough 'meat' in the head for these.  Anyone try this?  What did you use and would you do it again or change?

[bryanj]

Helicoil is ok if you fit studs

[jaytee-nz]

Just repaired an exhaust stud hole in my CB500 with a helicoil and it worked fine.

[BenelliSEI]

Helicoil is ok if you fit studs

+1.

[PeWe]

A CB750 head I have got a bad exhaust bolt thread.
I did not order a Wurth time-sert for M8, too expensive for one thread. I have 2 sets for M6, 1st and 2nd size.

I let my local shop install a thread insert.

I have after that used a cheap helicoil set for M8 in another CB750 head's exhaust bolt thread. I do not remember which head.

I have a Hindle 4-2-1 with spigots fastened in the head so removing the pipes does not need untighten those bolts.