Need help on 350x header

[ellis85]

I just bought a cobra header for my X and having trouble with the studs in the head. Its got the factory pipe on it so their in good i managed to get one out but twisted the end off another and dont want to twist the others off. ive sprayed WD/40 on them for three days straight before i started. Any suggestions would be appreciated.

[hrc200x]

If you have a torch use that to heat the nuts, don't get it too close to the head cause that is aluminum and would melt fast. If you don't have a torch maybe it would help to get the engine up to operating temp and trying loosening them?

[Xowner]

i hate exhaust studds!

[ellis85]

I tried running it for awhile but no luck loosening them. Thanks for the idea on the torch. I was told by a shop that if they break off in the head that i would have to take the head off and have a machine shop drill them out from the inside. Is this true if so why couldnt you just drill a hole in the stud and use an easy out? Your right exhaust studs suck especially 19 year old ones!

[Ddw350]

my stock header pipe was leaking a year ago,i lubed..not much happened,heat was the best,i got 3 of them out, the 1 that broke, i drilled with a 1/8 drill bit,then stepped up a few sizes.i got it drilled to about 13/64 then tried an easy out,that was a damn joke!.so i redrilled the 13/64,reamed it out a little then tapped the hole with a 1/4 tap and put a stud in it.i think i put a dab of high temp loctight on too.studs come in many lenghts,you really dont need to drill the entire lenght of the broken stud,mines in the hole maybe 5/8 ".ive never heard people say thier exhaust stud fell out! i do this kinda stuff alot at work and all..the key is CENTER the bit,DRILL STRAIGHT and use quality sharp bits[we use cobalt split points]thier worth the money[unless you break it,then you get pissed,unless its at work,the company buys them]it took me like 45 mins to do the hole thing,..oh yea,what ever you do DO NOT! break an easy out or drill bit in the hole,i only did this when i hurried the job,keep us posted

[ellis85]

Thanks for the help Ddw that sounds like a plan. Ill keep ya posted.