460 Ford Exhaust Bolts

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OREX
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460 Ford Exhaust Bolts

Post by OREX » Wed Aug 14, 2013 9:04 pm

Broken exhaust manifold bolts taken out by welding with a mig welder then welding a nut on top. Then impact gun. You can see the broken off easy out in the center of one of the bolts.
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Re: 460 Ford Exhaust Bolts

Post by toolman » Thu Aug 15, 2013 3:13 pm

based on how those threads look I would suggest running a tap through the holes in your head, otherwise the new ones are going to in just as hard, and prolly have to be removed the same way.

you don't want to cut new threads, just clean out the stuff in there. It most likely will be hard and crusty so use lots of oil (or some thicker type lubricant) and yurn the tap slowly and backing it off every 1/2 turn or so.

I would suggest some anti-seize...but with it being exhaust manifold it most likely won't do a thing for ya.

For future reference... I have gotten a EZ out to work exactly 1 time in my life. I typically don't even bother with them, a left hand drill bit however is great thing if your gonna drill something out anyway. Often times it will grab the broken bolt and it will twist out when drilling. I also usually drill dry when doing that as it will heat up the bolt pretty good and that is usually a good thing.
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Re: 460 Ford Exhaust Bolts

Post by Nightstalker » Thu Aug 15, 2013 5:32 pm

toolman wrote: I have gotten a EZ out to work exactly 1 time in my life.
He forgot to tell you he only used it once :o :P
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Re: 460 Ford Exhaust Bolts

Post by OREX » Thu Aug 15, 2013 8:11 pm

Good tips. Already done. I used to work on commercial fishing boats so I am pretty familiar with stuck, broken, corroded hardware. Some people will tell you that you can't run a mig welder in the holes without ruining the threads. In our case it worked fine and after running a tap through the holes all is well. I was telling the kids (24 yr olds...lol) who by the way should have asked me about removing the bolts before breaking them and the easy-out, much of this may have been avoided.

What they did right:
They had used PB Blaster on the bolts and let it soak and when it got to drill time they were using my left handed bits.

What might have helped:
They didn't use an impact which we have available. They were heating the stud instead of the manifold with the torch. They could have also tried candle wax after the torch rather than the PB blaster. The paraffin wax will soak up the threads.

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Re: 460 Ford Exhaust Bolts

Post by Sarge 1/68th Armor » Thu Aug 15, 2013 10:10 pm

When I use a left hand drill, my forehead gets little holes all over it :?
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Re: 460 Ford Exhaust Bolts

Post by Nightstalker » Thu Aug 15, 2013 10:34 pm

LMAO!!!!!!!! that makes me think of getting beat up by the speed handles we used in the AF. This is a speed handle if anyone is wondering
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If the bit slipped out of the fastener at the right moment WHAM!!!!! ... We always wondered what drew more blood, the AF speed handles or the M1A1 Abrams :o :D :P :39:

OK I am smartassed out .. time for some beauty rest.
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Re: 460 Ford Exhaust Bolts

Post by toolman » Fri Aug 16, 2013 6:58 am

I found the single best penetrating oil (hubba hubba) is a 50/50 mix of Acetone and brake/trans/power steering fluid.

I've used it all at some point and that mix ( I found on the web) is easily the most effective.
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Re: 460 Ford Exhaust Bolts

Post by Nightstalker » Fri Aug 16, 2013 7:10 am

I will have to remember that one Tool.
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