BROKEN VALVE COVER BOLT IN HEAD

[gbodyera]

Okay. I have my engine running like a champ. Sounds 100x better than before we did our work to it.

I have a valve cover bolt broken off into the head. Its not even sticking out. its below the surface level. I HOPE THERES SOMETHING I CAN DO TO GET IT.

I have oil leaking out of there now and its burning off of the headers..

SUGGESTIONS!PLEASE

 

[DOUG213XRJ]

Try a easy out ](*,), Or drill it out Iv never had any luck with the easy outs. curse_sign.gif

 

[Brown_Gbody]

Use a COBALT drill bit, 1/8th or 3/16 diameter at most. Make sure you soak it first with penetrating fluid (PB Blaster is my choice)

S L O W L Y drill into the bolt shank and keep the drill bit straight.
Drill a good 3/4 inch into the stud, then you can thread an easy out into the hole.

That should back it out...

Do not blow the metal shavings from the work area. Only use a vaccum to remove the debris.

Works every time....

 

[axisg]

the only thing I could add to that is if you can find a reverse thread drill bit to drill it out with. I have found sometimes that drilling the bolt out in reverse sometimes backs it out of the threads rather than driving the broken bolt further in. The hardened cobalt bits are not cheap but they do last !

Oh; and I never have much luck with with easy outs either.

 

[bowtie81]

the only thing I could add to that is if you can find a reverse thread drill bit to drill it out with. I have found sometimes that drilling the bolt out in reverse sometimes backs it out of the threads rather than driving the broken bolt further in. The hardened cobalt bits are not cheap but they do last !

Oh; and I never have much luck with with easy outs either.

x2

 

[t5montecarlo]

If the bolt broke tightening it, you bottomed out in the hole and an easy out will also break (been there...done that...wore out the T-shirt).

 

[shadychevyowner]

never had problems with square easy outs but i have had problems with the ones that spiral (type of easy out). actually broke a head b/c it screwed into the bolt and stretched it, cracking the head.

 

[D&A Machine Shop]

If the bolt is bottomed out then you would be better off just drilling the bolt out and Helicoiling the hole.
You would not belive how many ezouts we see that have been broken off, and when they break off then they are almost impossable to drill out because they are harder than any drill bit that you can find. When they break off then you normally have to cut them out with a highspeed carbide cutter.

 

[gbodyera]

Thanks guys. Since I didint want to take any chance screwing up. I paid a guy to do the job. I dont know what he did but I ran in my house and came back out and it was done.

 

[Brown_Gbody]

Thanks guys. Since I didint want to take any chance screwing up. I paid a guy to do the job. I dont know what he did but I ran in my house and came back out and it was done.

That's usually how it goes... I'm sure he did one of our suggestions...