titan2087

Id have to agree with the heat. Get her a nice cheery red almsot then let off cool with spary bottel of water then repeat a few times just be sure your not heating things up you dont want. This method of high heat then fast cooling will breack it up real fast from the rapid expanding and then contracting..... this will weaken it some aswell thougth sadly [>:] so use best judgement. Either that or bust the hell out of your nuckle while you strain with every muscle in your body under you car lol.

crazyhorse

thanks for the advice. i have the socket & tools to loosen the nut that is not the problem ,BUT after spraying it with MOST of the penetrating sprays for several days now ,it feels like it is going to twist the bolt off in the manifold which is EXACTLY what i am trying to prevent. DOES THE MOTOR HAVE TO BE PULLED TO CHANGE THE HEADERS ? this is my first 4.6 , others are 5.0 mustangs. thanks for taking time to offer advice.

silverbullets

no, it doesnt have to be pulled, have fun though, check out some websites on header installs, i did mine on ramps for my 04, long tubes, it took about 6 hours, and i work on vehicles! was first time for these, next time will be easier or ill pay someone,lol.

crazyhorse

exhaust manifold bolts will not break loose still--- i so much don't want them to wring off . i have sprayed, sprayed ,heated, cooled, heated,cooled & it just seems to be frooze . any more ideas before i wring it off? thanks.

crazyhorse

ideas?