An impact wrench!? On rusted bolts!? One word: no... no... no... no, no, no, no, no!!! The impact wrench can work, only on heavy duty nuts and bolt such as lug nuts and the like. As it was said in another message, these are light duty studs and nuts that can be extracted on and emergency basis. Using an impact wrench will have the most effect on the area CLOSEST TO THE DRIVING FORCE (for you physics folks out there my vocabulay may not be up to snuff, but the concept is simple). If the rust has already begun to weaken the bolt, high impact energy will not get a chance to transfer to the bolt's (or stud's) treads and can continue to weaken the bolt. A SLOW steady increase of force will allow the energy to transfer better past the weak spots better and to the threads, which is where you want it. Sometimes this can be a slow go, but the heartache saved from no broken studs should give you enough satisfastion. ----- Original Message ----- From: "Walter Coe" <Whalt@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Tuesday, May 14, 2002 1:00 PM Subject: Re: [DML] Exhaust manifolds removal? > My method of choice for removing stuck bolts is to use an impact wrench. My > logic here is that a jarring motion is more apt to shake it loose; whereas, > a slow gradually increasing torque applied by hand will let it twist off and > break. > > I'm not advocating to put the impact wrench on its maximum setting the first > try. What I do is gradually increase the setting on the wrench so that > somewhere along the way the bolt will shake loose. > > What is the better anti-seize compound to use on the manifolds? The silver > stuff or the copper stuff? I generally use the silver stuff on aluminum and > the copper on everything else. Is there any truth to this superstition or > is the copper better in every application? > > Walt Tampa, FL > > > > To address comments privately to the moderating team, please address: > moderator@xxxx > > To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >