Resolved Stripped Mani-Head Stud Hole

[Chumpaumpalumpa]

I was just about finish installing the manifold when the upper leftmost stud decided it wanted to eat the threads in the head (@<22ft/lbs). So it stripped and using a longer bolt didn't work either. I can't afford to pull the head again which leads me to my question....... As long as I drill tap and get the timesert in there dead straight, will I still have to pull the head? There is adequate room as the radiator, turbo, IC, and everything is out of the way. As far as I can tell with a flashlight and a long bolt, ALL of the holes on the head for the manifold are blind holes with the exception of the bottom center one which passes through an oil galley.

To sum up, is it a blind hole? If I get everything straight, will there be a problem?

For anyone who sees this in the future, the threads are all M8x1.25.

 

[miliman13]

I believe it is. But give me a min I'll confirm I have a head sitting out.

 

[Dsmkauai]

Just take painters tape or electrical tape and mark the depth you need to go on the drill bit and don't go past that mark. As long as you are perfectly straight you should be just fine. Only thing I can think of that's close is the passage for the oil feed.

 

[bastarddsm]

Yeah it's a blind hole. I helicoiled one of mine on the car. Becarefull drilling do you done go deep and get into water.

 

[bastarddsm]

The middle one on the bottom is not blind and goes into a oil drain fyi.

 

[miliman13]

Confirmed its blind.

 

[Chumpaumpalumpa]

Cool thanks guys ill be doing that right now.

 

[Chumpaumpalumpa]

Went well, all fixed.