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Re: busted header bolt
SnoMan wrote:
> On Thu, 13 Sep 2007 14:01:53 -0400, Mike Romain <romainm@sympatico.ca> > wrote: > >> Things like 'easy outs' are a failure 99% of the time I have seen, used >> or heard of their use. > > > Actually they have a pretty high success rate 'if" you do it right. > The trick is to drill out enough of bolt to get a good sized EZ-out to > bite in it. Hollowing the bolt out weakens its gripe some on > block/threaded hole. . Also cast iron expands quicker than steel does > and if you heat blot up several hundred degrees in bolt area quickly > (you need to drain coolant) after drill hole and before using EZ-out > you can remove realy stubborn ones. > ----------------- > TheSnoMan.com Living in the rust belt makes for some nasty ones. I prefer to drill off center so the bolt ends up C or crescent moon shaped so it releases on one edge and can spin out. Gotta drill it either way anyway. Mike |
Re: Re: busted header bolt
On Thu, 13 Sep 2007 19:20:34 -0400, Mike Romain <romainm@sympatico.ca>
wrote: >SnoMan wrote: >> On Thu, 13 Sep 2007 14:01:53 -0400, Mike Romain <romainm@sympatico.ca> >> wrote: >> >>> Things like 'easy outs' are a failure 99% of the time I have seen, used >>> or heard of their use. >> >> >> Actually they have a pretty high success rate 'if" you do it right. >> The trick is to drill out enough of bolt to get a good sized EZ-out to >> bite in it. Hollowing the bolt out weakens its gripe some on >> block/threaded hole. . Also cast iron expands quicker than steel does >> and if you heat blot up several hundred degrees in bolt area quickly >> (you need to drain coolant) after drill hole and before using EZ-out >> you can remove realy stubborn ones. >> ----------------- >> TheSnoMan.com > >Living in the rust belt makes for some nasty ones. > >I prefer to drill off center so the bolt ends up C or crescent moon >shaped so it releases on one edge and can spin out. > >Gotta drill it either way anyway. > >Mike Sometimes if you fear the bolts are going to be a pill you should try to break them loose right after engine is shut off hot. Yes you do need some protection (like some leather work gloves and a long sleeve shirt) but when block is hot the bolts will come out easier due to cast iron expading more than steel. ----------------- TheSnoMan.com |
Re: Re: busted header bolt
On Thu, 13 Sep 2007 19:20:34 -0400, Mike Romain <romainm@sympatico.ca>
wrote: >SnoMan wrote: >> On Thu, 13 Sep 2007 14:01:53 -0400, Mike Romain <romainm@sympatico.ca> >> wrote: >> >>> Things like 'easy outs' are a failure 99% of the time I have seen, used >>> or heard of their use. >> >> >> Actually they have a pretty high success rate 'if" you do it right. >> The trick is to drill out enough of bolt to get a good sized EZ-out to >> bite in it. Hollowing the bolt out weakens its gripe some on >> block/threaded hole. . Also cast iron expands quicker than steel does >> and if you heat blot up several hundred degrees in bolt area quickly >> (you need to drain coolant) after drill hole and before using EZ-out >> you can remove realy stubborn ones. >> ----------------- >> TheSnoMan.com > >Living in the rust belt makes for some nasty ones. > >I prefer to drill off center so the bolt ends up C or crescent moon >shaped so it releases on one edge and can spin out. > >Gotta drill it either way anyway. > >Mike Sometimes if you fear the bolts are going to be a pill you should try to break them loose right after engine is shut off hot. Yes you do need some protection (like some leather work gloves and a long sleeve shirt) but when block is hot the bolts will come out easier due to cast iron expading more than steel. ----------------- TheSnoMan.com |
Re: Re: busted header bolt
On Thu, 13 Sep 2007 19:20:34 -0400, Mike Romain <romainm@sympatico.ca>
wrote: >SnoMan wrote: >> On Thu, 13 Sep 2007 14:01:53 -0400, Mike Romain <romainm@sympatico.ca> >> wrote: >> >>> Things like 'easy outs' are a failure 99% of the time I have seen, used >>> or heard of their use. >> >> >> Actually they have a pretty high success rate 'if" you do it right. >> The trick is to drill out enough of bolt to get a good sized EZ-out to >> bite in it. Hollowing the bolt out weakens its gripe some on >> block/threaded hole. . Also cast iron expands quicker than steel does >> and if you heat blot up several hundred degrees in bolt area quickly >> (you need to drain coolant) after drill hole and before using EZ-out >> you can remove realy stubborn ones. >> ----------------- >> TheSnoMan.com > >Living in the rust belt makes for some nasty ones. > >I prefer to drill off center so the bolt ends up C or crescent moon >shaped so it releases on one edge and can spin out. > >Gotta drill it either way anyway. > >Mike Sometimes if you fear the bolts are going to be a pill you should try to break them loose right after engine is shut off hot. Yes you do need some protection (like some leather work gloves and a long sleeve shirt) but when block is hot the bolts will come out easier due to cast iron expading more than steel. ----------------- TheSnoMan.com |
Re: Re: busted header bolt
On Thu, 13 Sep 2007 19:20:34 -0400, Mike Romain <romainm@sympatico.ca>
wrote: >SnoMan wrote: >> On Thu, 13 Sep 2007 14:01:53 -0400, Mike Romain <romainm@sympatico.ca> >> wrote: >> >>> Things like 'easy outs' are a failure 99% of the time I have seen, used >>> or heard of their use. >> >> >> Actually they have a pretty high success rate 'if" you do it right. >> The trick is to drill out enough of bolt to get a good sized EZ-out to >> bite in it. Hollowing the bolt out weakens its gripe some on >> block/threaded hole. . Also cast iron expands quicker than steel does >> and if you heat blot up several hundred degrees in bolt area quickly >> (you need to drain coolant) after drill hole and before using EZ-out >> you can remove realy stubborn ones. >> ----------------- >> TheSnoMan.com > >Living in the rust belt makes for some nasty ones. > >I prefer to drill off center so the bolt ends up C or crescent moon >shaped so it releases on one edge and can spin out. > >Gotta drill it either way anyway. > >Mike Sometimes if you fear the bolts are going to be a pill you should try to break them loose right after engine is shut off hot. Yes you do need some protection (like some leather work gloves and a long sleeve shirt) but when block is hot the bolts will come out easier due to cast iron expading more than steel. ----------------- TheSnoMan.com |
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