Cylinder head bolt removal.

[VT2Commie]

Note the Hexagonal socket with rounded corners which will greatly reduce the risk of rounding off the bolt head.
Don't use the 12 point sockets for this job.

+1 for this advise if you so choose to accept it....

Use this type of socket...

NOT this type of socket, Unless they're high torque like the bolt Imoengnr has shown.

 

[Calaber]

someone posts asking for help.....
what an awesome forum to be apart of

You got it, sport. If you stay with this forum, you need a sense of humour and a thick skin. Princesses need not apply.

BTW, asking about something as basic as undoing tight head bolts is bound to attract smart-arse responses as well as helpful ones.

 

[VTS5]

Longer bar + greater force = Bolt head will snap
You'll be in deep ****...

Try to hit the bolt (with force) with hammer few times over ,then with six point socket try to undo.
Do this till it's out..

 

[Fu Manchu]

I used to have an impact socket like that. Hold it and smack it with a hammer. It would compress in the set direction and rotate the bolt or nut.

 

[greenacc]

Longer bar + greater force = Bolt head will snap
You'll be in deep ****...

Try to hit the bolt (with force) with hammer few times over ,then with six point socket try to undo.
Do this till it's out..

I don't think he is anywhere near that level of force yet. With the right socket and a long bar these will take 5 seconds each to loosen.
Can the OP post a pic of the headbolt?
People here are mostly very helpful and will help if you give enough information and take the good advice you get given.

 

[Immortality]

People are helpful when the first reply from the OP isn't smothered with sarcasm...