Stripped headstud hole

[Darkcloud]

So I was torqueing down the headstuds and one hole stripped in one area. If I bought a tapper would I be able to tap the hole myself. I really need my car running and cant afford to remove the block where I live.

Whats weird is that its just one place where and the bolt goes more than halfway, where its stripped is near the top of the threads.

[dj_ender]

I wouldn't use a tap, maybe a thread chaser. Heli coil would be the best option.

[Bullhorn7]

Ehh. I may be wrong but your probably gonna have to tap it out a size bigger and find a headstud or get one made that size and the same length.

[illinois_erik]

Yes take a tap and chase the threads. Did you inspect the bolts threads? They do stretch yours might have had enough torque cycles to stretch thus slimming the diameter and not allowing a section of threads to engage. Try swapping bolts to see if you have the same problem, or buy a new one. If those options are to no avail you will have to get a helicoil repair kit. You may have to bore out the hole larger, and install a helicoil that is the size of the stock stud. good luck.

[Darkcloud]

This was the first HG change on the car.

So maybe I some how dinged the thread, so a regular tap is out of the question basically

[oyajicool]

Helicoil will be the answer for me.

But the threads start from couple of inches below the mating surface with the cylinder head. It will be extremely difficult to install a helicoil successfully.

Helicoil kit of this size will be expensive, too, for possibly one time use.

I would call a machine/engine shop for advice if it was me.

[Darkcloud]

400 for one hole to have the machine shop fix it, only machine shop local to me

[Raf99]

This was the first HG change on the car.

So maybe I some how dinged the thread, so a regular tap is out of the question basically

This sucks yo. I wish I was there to give ya a hand or something. Best of luck to ya!

[oyajicool]

Look for replacement block/engine for under $400.

[dj_ender]

Look for replacement block/engine for under $400.

Why? All he needs is a new head.

[oyajicool]

Female threads of head bolts are in the block, no?

[dj_ender]

Holy shit, this whole time I had it in my head he was talking about an exhaust stud on the head.....

[oyajicool]

If it was exahust studs' female threads, I can do Helicoils right now with the head in place.

[dj_ender]

Are all of the threads in the block? For some reason I thought some of them were in some of the main caps.

[oyajicool]

Female threads for head bolts are all on the block, the last time I checked,,,,.
Not even one of them moved to other parts, yet, as far as I know.