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#1 |
accepting donations
Join Date: Oct 2008
Location: houston tx
Posts: 521
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I hate broken bolts
So my alternator belt starting squeeling the other day so today when I got home I popped the hood to tighten it and realized the mounting bolt going into the head was broken off flush.
So five broken drill bits and one broken ez out and the damn bolt is still stuck. Got the alternator tight enough to where I can get to work and heat the bolt up a little then use a better ez out.
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1999 Yamaha roadstar 1600 chop. (in progress.) See my builds here>http://s113.photobucket.com/albums/n238/nickrp_2006/ "Ya'll can go to hell, I'm going to Texas." David Crockett |
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#2 |
Registered User
Join Date: Oct 2007
Location: Desert Southwest
Posts: 540
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Re: I hate broken bolts
Best way to get them out that I've tried is to get a nut and mig weld through the center of the nut into the bolt. Turn the nut with a wrench, the bolt comes right out.
Takes 15 minutes (including setup and cleanup) versus hours with drills etc. |
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#3 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
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Re: I hate broken bolts
I've had a lot of success with a left handed drill bit.
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"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
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#4 |
Registered User
Join Date: Nov 2006
Location: lafayette, ga.
Posts: 832
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Re: I hate broken bolts
what he said works great
__________________
![]() It must be fought for, protected, and handed on for them to do the same.... Ronald Reagan |
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#5 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,500
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Re: I hate broken bolts
X 3
The only problem I had is when I had the wife stop by Autozone for a set, she said they looked at her like she was crazy and said there was no such thing. I guess they though they were drill bits you held in your left hand. i had to make a special trip 15 miles back up there to get them, as I had bought them before. I threw a big tantrum, because my wife doesn't like going to the auto parts store for this exact reason. The offered me a 10% discount. I siad "WOW! The item is $10.". The mgr said "anything you buy today". Co I picked up wheel cylinders, an alternator and a CV axle for my 93 3/4 ton 4x4. |
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#6 |
I'm a poor spectator
Join Date: Aug 2006
Location: San Antonio, Tx
Posts: 2,287
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Re: I hate broken bolts
Weld the nut to it, i've done it at home and work with success every time.
__________________
2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig ![]() 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! ![]() 1979 Ford F150 4x4 SWB Built Ford Tough!!! ![]() 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! |
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#7 | |
Senior Member
![]() Join Date: Jul 2008
Location: kennewick, WA
Posts: 1,508
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Re: I hate broken bolts
Quote:
i like your style! ![]() |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: I hate broken bolts
and then make sure to put a long bolt in there. A stud would be better, run it in till it bottoms out, back it out a turn, then install a nut on the exposed part.
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#9 |
Account Suspended
Join Date: Sep 2008
Location: Alva Florida
Posts: 668
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Re: I hate broken bolts
next time you have a bolt you cant get put PB Blaster on them ok
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#10 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: I hate broken bolts
I support the weld a nut to the bolt thing. I have done it many times.
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#11 |
Registered User
Join Date: Apr 2008
Location: East WA
Posts: 243
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Re: I hate broken bolts
i feel your pain. i was taking a set of headers off an old 383 and broke one of the bolts. i plaid hell getting it out. On top of that is was pouring snow and i was freezing my a$$ off!
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#12 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: I hate broken bolts
Quote:
I'm using grade 8 bolts on mine. What grade did you use? s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#13 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: I hate broken bolts
Quote:
Before I purchased a matching set of pulleys I had the hood up and was showing off my newly installed 383. At the right RPM the alternator bracket was litteraly dancing on the front of the engine. Those bolts didn't stand a chance in that environment. Watch the parts board for the members that are parting whole trucks. When they drag one in and say - I'm parting this unmolested truck, get dibs on ALL the pulleys. Then make sure you have the correct power steering pump bracket, alternator bracket, and AC brackets if so equipped.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#14 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: I hate broken bolts
Quote:
I’m assuming this misalignment is noticeable? Since the alternator is pretty much fixed the problem was between the crank & water pump pulleys? s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#15 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: I hate broken bolts
Quote:
I got home ok that day and took a real close look at the alignment of the pulleys. Coincidentally da-burb just did some horse trading with another member and ended up with a truck that was previously unmolested. I purchased the cam shaft pulley off him, installed it, and lost all my wierd vibrations.
__________________
'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#16 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: I hate broken bolts
another VERY common reason for the alt bolts snapping, people put too short a bolt in there. The lower cradel is thick, and you have 75% of the bolt in the bracket and cradle, then just 1/4 inch in the head.
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#17 |
Registered User
Join Date: Nov 2008
Location: texas
Posts: 84
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Re: I hate broken bolts
I never was able to get a bolt out of a hole with left handed bits. I have had better luck with the square ease outs then the round ones. Welding a nut on a bolt works great but you can weld the bolt into the threads. PB blast is great. Kroil is great but expensive and i have read about heating up the broken bolt with a torch and then put a candle to the bolt. When the candle melts it supposed to seep into the threads and help lubricate the bolt. Some things
I've learned in the past. |
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#18 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: I hate broken bolts
The thing about welding, is that if the bolt is in a cast iron head, the weld will stick to the bolt long before it gets to the threads of the head. cast isor is kinda nice in that respect.
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#19 |
Registered User
![]() Join Date: Sep 2001
Location: Fort Wayne, Indiana, USA
Posts: 1,888
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Re: I hate broken bolts
I have a pesky bolt broken off in a head. I will definately try welding a nut to the sheared-off bolt. The heat from the weld along the mechanical bond of the weld sound like a great combination!!
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#20 |
accepting donations
Join Date: Oct 2008
Location: houston tx
Posts: 521
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Re: I hate broken bolts
I got it out with a square ez out.
I work on mack, volvo's, freightliners and tanker trailers for a living so broken bolts are a common problem for me. Detroit 60 series had a problem with a/c bolts snapping off. They had a service bulletin where you had to add a support bracket from the back of the compressor to the block.
__________________
1999 Yamaha roadstar 1600 chop. (in progress.) See my builds here>http://s113.photobucket.com/albums/n238/nickrp_2006/ "Ya'll can go to hell, I'm going to Texas." David Crockett |
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