Topic: Header bolts stripped

[lownlinked85]

Ok guys I was replacing my exhaust header gasket and when I was putting on my header 2 of the studs stripped from the head I talked to a friend of mine says we can fix it I want to know as much information on this before I start drilling and tapping and ruin my head now i believe one bold is stripped on piston three and the other one is at the very front which would be piston one Let me know if this happened to you and what you did to fix it Also post on here if there is any threads on this subject or close to it and maybe so pointers on what to do Thanks alot in advanced

[sparkys83yota]

Heli coil

[emsvitil]

Happened on #4 with my 22RE...

The exhaust manifold was warped too....


With a 22R, you can fix it with the engine in place.

I replaced all the studs with 3/8" stainless threaded rod (cut to length) and used threaded inserts (1/2" 13 od) on the head.    Slowly step up in drill bit sizes until you get to the size for the tap you're going to use.    

I had to literally do the #4 drilling by hand..... (holding the drill bit in my hand.....)  because of the brake booster.

Used red threadlock on the threaded insert to head, and blue threadlock on 3/8 rod to threaded insert

[junya92toy]

time certs work good too

[lownlinked85 [OP]]

brice, randy was telling me just to drill and tap it with the next size up but i think heli coil will work how do time certs work Junya92toy?

[emsvitil]

theaded inserts and time certs are basically the same thing...

timesert



threaded insert




Look up threaded insert at www.mcmaster.com

[sparkys83yota]

I wouldnt go bigger. I used inserts. Thst way i could keep everyting the same

[Zs Confederate Toy]

Do you have to drill for a time cert or a threaded insert?

[emsvitil]

Do you have to drill for a time cert or a threaded insert?

Yes, but drilling aluminum is easy........ (so is tapping)

[Zs Confederate Toy]

Aluminum is easy, I was just thinkin about the possibility of drillin crooked or too far

[emsvitil]

Wrap some tape around the bit as a depth gauge.

By slowly stepping up in drill size, you should avoid crooked.

Drill slow.

[junya92toy]

I would think with aluminum you would want a insert, so you actually have steel on steel then

[Zs Confederate Toy]

I've wanted to use inserts, but I havn't read much on them so I wasnt sure. I would rather have steel on steel

[DAILYspec]

good to know!