A Drilling No-No .... That Worked! - 63/64 Cadillac Website2024-03-29T07:21:10Zhttps://6364cadillac.ning.com/forum/topics/a-drilling-no-no-that-worked?commentId=6543066%3AComment%3A206208&feed=yes&xn_auth=noAs Paul Harvey would say "Now…tag:6364cadillac.ning.com,2019-08-22:6543066:Comment:2063932019-08-22T20:26:07.612ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>As Paul Harvey would say "Now, for the rest of the story.": <a href="https://youtu.be/tg7_A3SHKTA" target="_blank">https://youtu.be/tg7_A3SHKTA</a></p>
<p>As Paul Harvey would say "Now, for the rest of the story.": <a href="https://youtu.be/tg7_A3SHKTA" target="_blank">https://youtu.be/tg7_A3SHKTA</a></p> Well, I pulled engine from pa…tag:6364cadillac.ning.com,2019-08-21:6543066:Comment:2062942019-08-21T06:09:27.817ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>Well, I pulled engine from parts car #51 yesterday, the 1964 CDV, and started pulling some parts off the engine, and on the RH exhaust manifold one of the 2 center bolts broke off just below the head. I knew that both center bolts had been replaced with aftermarket bolts as they had 5/8" hex head. The other bolt gave me a bit of a fit as it kept turning in place when it cleared the head and was just spinning. Apparently the smooth bolt shank above the thread was a bit thicker than the…</p>
<p>Well, I pulled engine from parts car #51 yesterday, the 1964 CDV, and started pulling some parts off the engine, and on the RH exhaust manifold one of the 2 center bolts broke off just below the head. I knew that both center bolts had been replaced with aftermarket bolts as they had 5/8" hex head. The other bolt gave me a bit of a fit as it kept turning in place when it cleared the head and was just spinning. Apparently the smooth bolt shank above the thread was a bit thicker than the stock bolt making it want to seize up inside the manifold thread hole. I finally kept shooting some WD40 on the one bolt as a turned it, then tapping it downward with the claw of a hammer. It finally came out. <br/><br/>That left me with the other bolt which had snapped off near the top. I could turn the entire exhaust manifold back and forth a bit and could feel and see that the bolt was just seized up on the manifold and was turning freely inside the cylinder head. So... I took the biggest hard metal bit I have... I think it may have been the 1/4" you see in the picture and like before drilled right thru the center of the bolt until I think I was almost to the cylinder head. The problem is i still didn't have much room to pry, and bolt still has enough meat on it to not want to slide off the broken stud. Anyway, I have it on the engine stand where I can flip it over and may try a bigger drill bit. Luckily, the other parts came right off... and ended up with a pristine flexplate, adaptor ring etc. </p>
<p>Just to add, I usually have pretty good luck with the exhaust manifold bolts on these engines and rarely reak the original bolts. In this instance it was an aftermarket bolt.... might not even be a hardened bolt! For going after the regular bolts with the 9/16" hex heads, I always used a good 6-point 14mm socket (slightly smaller than a 9/16"), and tap it on the bolt head, and it it with the big 1/2" impact wrench. With the 14mm 6point it is not going to strip off, and there is something about the vibrating, hammering affect of the impact wrench that seems to help break the bolts loose, better than say a free-handed continuous pressure turn using say a large breaker bar. All the other bolts were originals and was a bit worried on a couple on the left side, as the turning slowed, and my big 80 gallon air compressor kicked in to push the PSI on up a bit... but all the originals came out. Again, only issues were with those aftermarket bolts!</p>
<p></p> Going up a bolt size is alway…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2062132019-08-13T19:21:57.319ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>Going up a bolt size is always a last resort, but you have to make that choice. If something is a bit questionable I will torque to spec on the bench 1st and see how it holds. The key terms here are "torque to spec". Most threads get stripped because someone takes say that thermostat housing bolt, which is supposed to be 10 ft lb and take a 1/2" drive ratchet and unknowingly take it down to 30, 40, 50 ft lbs...then get surprised when the bolt strips out or head pops off (if regular grade…</p>
<p>Going up a bolt size is always a last resort, but you have to make that choice. If something is a bit questionable I will torque to spec on the bench 1st and see how it holds. The key terms here are "torque to spec". Most threads get stripped because someone takes say that thermostat housing bolt, which is supposed to be 10 ft lb and take a 1/2" drive ratchet and unknowingly take it down to 30, 40, 50 ft lbs...then get surprised when the bolt strips out or head pops off (if regular grade bolt). At 18 years old I was like Hercules on bolts and it took me a few stripped threads and broken bolts to start looking at torque specs or at least taking the conservative approach if tightening free-handed.</p> I thought the same thing... w…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2065052019-08-13T18:35:53.809ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>I thought the same thing... weakened it near the block.</p>
<p>I thought the same thing... weakened it near the block.</p> Knurly, Dude!tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2062122019-08-13T18:30:17.021ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p><strong>Knurly, Dude!</strong></p>
<p><strong>Knurly, Dude!</strong></p> One thing I forgot to add to…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2065042019-08-13T18:28:02.980ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>One thing I forgot to add to my main story, is I was left with a long cored out bolt shank into the engine block and thought, this is definitely going break off into the engine and will have to then tap that out, but by chance grabbed the long exposed bolt with pliers and realized it was freely turning, so was actually able to unscrew the rest of the bolt from the block by hand. I was double-chuffed... another made up word! LOL</p>
<p></p>
<p>One thing I forgot to add to my main story, is I was left with a long cored out bolt shank into the engine block and thought, this is definitely going break off into the engine and will have to then tap that out, but by chance grabbed the long exposed bolt with pliers and realized it was freely turning, so was actually able to unscrew the rest of the bolt from the block by hand. I was double-chuffed... another made up word! LOL</p>
<p></p> Very true ... it depends on i…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2062112019-08-13T18:25:42.676ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>Very true ... it depends on if you can get a good bite of the broken bolt/screw, condition of bolt, and other conditions. I've been lucky with them recently. It often requires a bit bigger hole than drill bit end provided, then I slowly let the easy out thread into the hole. The last one with the outlet pipe truly was an easy out.</p>
<p>Very true ... it depends on if you can get a good bite of the broken bolt/screw, condition of bolt, and other conditions. I've been lucky with them recently. It often requires a bit bigger hole than drill bit end provided, then I slowly let the easy out thread into the hole. The last one with the outlet pipe truly was an easy out.</p> getting close to the edge was…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2063052019-08-13T18:23:15.611Z2o93f8rdftyzjhttps://6364cadillac.ning.com/xn/detail/u_2o93f8rdftyzj
<p>getting close to the edge was most likely the best end result really.</p>
<p>Good on ya</p>
<p></p>
<p>getting close to the edge was most likely the best end result really.</p>
<p>Good on ya</p>
<p></p> I actually think the term E-Z…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2065032019-08-13T17:39:00.697Z1bt7pektvt387https://6364cadillac.ning.com/xn/detail/u_1bt7pektvt387
<p>I actually think the term E-Z Out is very inaccurate and misleading. "Difficult Out" or "Maybe You'll Get Lucky Out" would be truth in advertising. </p>
<p>I know they are about the only real option sometimes but seldom are they "E-Z"</p>
<p>I actually think the term E-Z Out is very inaccurate and misleading. "Difficult Out" or "Maybe You'll Get Lucky Out" would be truth in advertising. </p>
<p>I know they are about the only real option sometimes but seldom are they "E-Z"</p> I like the reversible drill b…tag:6364cadillac.ning.com,2019-08-13:6543066:Comment:2063022019-08-13T16:32:51.002ZJason Edgehttps://6364cadillac.ning.com/profile/jasonedge
<p>I like the reversible drill bit easy outs. You pick the drill bit end size based on bolt size and drill into the bolt... setting your reversible drill to counter-clockwise and then inserting the other end of the bit which has a "knurled" end so that when you run the drill, again counter clockwise, it threads into the drilled hole, and turns the bolt out. I just removed a bolt from a water outlet pipe like that the other day. Often works like a charm... but not always. </p>
<p>H<strong>ey..I…</strong></p>
<p>I like the reversible drill bit easy outs. You pick the drill bit end size based on bolt size and drill into the bolt... setting your reversible drill to counter-clockwise and then inserting the other end of the bit which has a "knurled" end so that when you run the drill, again counter clockwise, it threads into the drilled hole, and turns the bolt out. I just removed a bolt from a water outlet pipe like that the other day. Often works like a charm... but not always. </p>
<p>H<strong>ey..I mentioned Knurled again... it is my term of the day</strong>. I think may new saying to counter Tony's "Enjoy" should be <strong>"Knurly, Dude!"</strong></p>