Stripped head bolt hole - 4age

[Dangerous Beans]

Hi
I discovered that some nameless, inexperienced fool (oops) managed to strip the threads in one of the cylinder head holes in the engine i am rebuilding. The block is fine apart from this, so i would prefer to fix it rather than buy a new one.

I was thinking that over sized head studs would be best, as they will definatly be stronger than the origional bolts.
Has anyone installed oversized studs in a 4age block?
Is there any other way i could/should fix this?
Bonus ettique question: if I am likely to have a lot of silly questions, should i have one thread with a more general title, or multiple threads with specific titles?

Thanks for the help

[pandaah]

http://www.timesert.com/html/universalheadbolt.html

[toddw]

As mentioned - timesert is the only way to go. Way better than helicoils.

[boshy]

Fit up heli coils. What you have to do is find out what size is the original bolt size is. Buy a heli coil kit which will have drill, tape, heli coils & tools to fit them. All you have to do is drill the original hole out larger, tape a new thread, then wind in new heli coil into place. Easy & are alot stronger than the original thread. You can also get different length heli coils too

[Dangerous Beans]

Thanks.

I have to send the block into a machine shop, so I might get them to do it, but it is good to know that this is easy to fix.

edit: seems like there is no real difference between the 2 methods; both drill a larger hole, then tap a thread into it. the heli-coil just has an extra bit that allows you to use the original bolts. is there something else that i'm missing?

[pandaah]

timesert is much stronger than a helicoil.... helicoils dont really like extreme torque