JustinMP3

I finally did it and cant fix it. I busted one of the camshaft bolts off in my head and no one in my city can fix it. So I am going to have to buy a new head. What mods could I do to the head other than porting and polishing the valves?? Anyways my story goes like this I was putting my new camshafts on and was just finishing tightening some of the bolts in the proper order of course. And snap!! So moving on I got the car all ready to go. (to run) and now the damn thing wont start I think I know what the problem is but not sure. I have like 90 lbs of compression and I can smell fuel in the top of the valve cover when I take off the oil cap. Now its might be bent valves but we have a free wheeling crank and I have my timing all correct anyways. I am thinking that it could be my valve shaft clearance. I need some help thanks!!!!

kc5zom

I don't understand why nobody can fix your head? Did you break the bolt that bad that they could not drill that sucker out?

kosmicride

Go by a reverse drill bit to take out that stud, you may have to heat it a little.

JustinMP3

Never heard of it?? What is it?

Tom Slick

a machine shop should have no problem removing a broken stud, that stuff happens all the time. your must have wimpy machinists in your town??!!
gasket matching is when you match the size of your intake port in the head and manifold to the size of the maifold gasket. it doen't really add much but it is cheap and easy so it is worth doing.

JustinMP3

Well I also busted the extractor off inside the bolt. Very stupid of me but an accident

Sir Nuke

although an extractor is HARD as can be....it can still be removed...I have done it before....it just takes a little more time. It sounds to me what you need to do is find a REAL COMPITENT machine shop, they will be able to fix you up.

Tom Slick

a broken extractor is no match for a cobalt end mill on a bridgeport. i've removed them myself.
even if the head material it's self gets boogered up it can be welded, drilled and re-tapped.

Tom Slick

one thing to note is a torque wrench's lower 10% of the torque settings are not accurate. i.e. if your wrench goes from 100-300 in-lbs you shouldn't use it below 120. also a torque wrench is a presision calibrated tool that should be treated like one. if it is ever dropped or handled roughly it will be unreliable and shouldn't be used until recal'd or replaced. where i work they are cal'd every 6 months.