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03-09-2013, 09:40 PM
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#1 |
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Always a work in progress
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
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Exhaust manifold bolts broke in heads
I have 2 bolts that are broke off in the heads, 1 on each side . I tried easy outs and they broke off inside of the bolts. Now I can't get a bit to drill through them. Does anyone have any idea how I can drill these damn things out. I would rather not take the heads off if possible. I am just going to use help-coil for new threads so I just need to drill out the old bolts.
Posted via Mobile Device
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USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168 |
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03-09-2013, 11:36 PM
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#2 |
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Registered User
Join Date: Apr 2009
Location: Waynesfield Ohio
Posts: 1,991
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Re: Exhaust manifold bolts broke in heads
I always put a larger nut up agianst the broken bolt and fill the hole full of weld. After it cools for a few minuates just put a socket on the nut and back it out.
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 1949 Five Window, 1973 Step Side, 2000 Z71 |
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03-11-2013, 12:50 PM
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#3 | |
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Registered User
Join Date: Jun 2011
Location: Sneedville, TN
Posts: 831
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Re: Exhaust manifold bolts broke in heads
Quote:
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High School Project I ---http://67-72chevytrucks.com/vboard/s...d.php?t=639174 High School Project II ---http://67-72chevytrucks.com/vboard/s...27#post7290427 High School Project III ---http://67-72chevytrucks.com/vboard/s...d.php?t=715832 High School Project IV (Tyler) ---http://67-72chevytrucks.com/vboard/s...d.php?t=780186 |
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03-09-2013, 11:59 PM
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#4 |
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Always a work in progress
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
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Re: Exhaust manifold bolts broke in heads
Don't have access to a welder.
Posted via Mobile Device
__________________
USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168 |
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03-11-2013, 03:33 PM
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#5 | |
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Registered User
Join Date: Nov 2012
Location: West Des Moines, Iowa
Posts: 450
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Re: Exhaust manifold bolts broke in heads
Quote:
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03-11-2013, 01:21 PM
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#6 |
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TruckincrazY
Join Date: May 2004
Location: Haslet, TX
Posts: 493
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Re: Exhaust manifold bolts broke in heads
I had this same exact problem and the only option that worked for me short of pulling the heads was welding. Check my build thread if you want pics/tips. I rented a welder from home depot. Not sure if that's an option for you though.
Posted via Mobile Device
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My build thread - '84 2wd w/ a 6.0 swap http://67-72chevytrucks.com/vboard/s...d.php?t=433595 |
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03-11-2013, 01:57 PM
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#7 |
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the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Exhaust manifold bolts broke in heads
What all others have said. Tape off the exhaust ports, take the engine down to a muffler shop with some beers and a couple of nuts to weld on.
I don't know how id get out of bed if I didn't have a welder. Posted via Mobile Device
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67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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