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#83921 10/08/2007 4:34 PM | Joined: Aug 2007 Posts: 69 Shop Shark | | Shop Shark Joined: Aug 2007 Posts: 69 | I've got a broken water pump bolt on a chevy 350. Not that big a problem, right? Well, it must have been grade 8 cause it will not drill.I finally got enough drilled out and easy out, with heat, broke off inside the bolt. Now can't get either out.
Thought about making a stud, but block is cast, so cannot weld it. Does anyone think a good brazing job would work well enough for a water pump stud? Or am I on the way to the machine shop? | | |
#83922 10/08/2007 4:57 PM | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy 57Chev, you are facing every mechanics worst nightmare, I don't know if your engine is in a vehicle or out, if it's in we know it's a major job to pull it just to get one bolt out, but with the easy out broken off in it, it cannot be drilled with anything less than a carbide drill. Personally I would bite the bullet and pull it and take it to a machine shop to have it removed, good luck. | | |
#83923 10/08/2007 6:06 PM | Joined: Feb 2004 Posts: 29,741 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,741 | A broken-off EZ out is a real pain. You can heat it cherry red with a torch, and let it cool slowly, and it will soften enough to be drilled out, particularly if you use a solid carbide drill bit. The trick is to be sure you drill only the EZ out and the surrounding screw, not the block material. I'd suggest pulling the engine, and stand the block up under the spindle of a slow-speed drill press. Trying to keep doing the repair in place with hand tools is a good way to ruin the block for good.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#83924 10/09/2007 4:23 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | A good welder could weld a nut on to the remains. The heat of welding it can break them loose. If it's cross threaded (which I doubt it could be), it probably won't come out that way,
Scott | | |
#83925 10/09/2007 7:24 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | I did a similar thing with an exhaust manifold stud on a BMW. I called a machine shop and they recommended a local guy that did nothing but extract broken bolts and studs. He had a step van that he worked out of- he charged me $75 and removed the broken easy out from the stud right in my driveway. It was worth every penny.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#83926 10/10/2007 3:39 PM | Joined: Jul 2005 Posts: 2,031 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 2,031 | this is the same tip i have in our antique motocycle magazine only this one is right here on the bolt. check out this tech tip. only change is to place a washer (if possible) under the nut you weld on :p http://www.stovebolt.com/techtips/brokenbolt.htm
Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
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