So I win boner of the month. I over torqued a header bolt and messed up one of the threads inside the head. I went to put a new heli coil inside the hole but while using the tap i snapped the **** in half. Dont know how just did. Probably not enough lube, so either way, I have another set of stock heads and wondering if it is ok to just replace the one side? What do you guys think?

 

as long as both heads are the same it's fine.
You could probably even get away with missing just 1 bolt

 

I would just leave it like it is but the sound of the exhaust leak is driving me up the wall!!

 

If you are careful, you can drill through the broken tap with a carbide drill bit.
you may damage the threads a bit while working on it, but the helicoil won't care.

Honestly, it may take you an hour of careful work, but it saves the head.

 

I know for a fact that matco make a tap removal tool. it has 4 little fingers guess you would call them you slide it in there and presto it wil pull it out...

 

bro that sucks, i know how ya feel, done it a few times myself, for something to be hardened stell an to break so easy, just plain sux, then again it depends on what brand taps you use.



yep they sure do i have one, and works well, also if you dont wanna buy a tap use a very small pointed punch, i would do this with the head off, and try and loosen the broken tap, by tapping it cc. drilling a tap out is a bitch, i wouldnt even attemp it, you'll end up ruining the head more then likely

 

You cannot drill out a tap. However you can take a small punch and break pieces of the tap off until you get it all out. Patience is a virtue with this procedure, but it can be done with success.

 

I offered my advice based on experience.
I have drilled taps with carbide drill bits before. It works.

 

get a carbide punch and smack it fairly hard, if that doesnt work get a carbide 1/4 inch endmill and a high speed drill and little by little it will break away leaving the threads fine and dandy if your careful.

 

I've used a tap extractor like Grumpy5.3 said, and a I've broke them to pieces. If you don't have a extractor breakingit in pieces is the easiest way. those taps are so hard they shatter pretty easy....