Exhaust stud tricks?

[saburai]

Any good tricks for getting the old passenger side exhaust studs out of the manifold? Gotta get them out to install turbo Y collector. The nuts are rusted down to where a 9/16ths is too big 1/2 too small. 14mm is a touch big, but I guess it's the only game in town... I don't have a 14mm 1/2 drive 5 sided deep socket. I'm thinking, cut the stud enough to get my 14mm 3/8 deep on. First I'll hit it with the little Mapp gas torch and more PB blaster. If it doesn't come out, I'm in bad shape! I'm in the boonies without much in the way of other resources. Any suggestions other than prayer?

 

[snicklas]

They make a stud extractor. I buggered up the threads on one of the unit hubs. A buddy has an extractor and it backed right out.....

Something like this.....

https://www.amazon.com/gp/aw/d/B004...+extractor&dpPl=1&dpID=418W+iXTrWL&ref=plSrch

 

[saburai]

Thanks friend!
I double nutted the stud with the 5/8 nuts I took off. Lots of heat and PB blaster 1/2 breaker bar and all I'm doing is turning the double nut. It's taking a lot of force too. Thanks for the link, I'm going to make another attempt with the double nut, if not I'll have that tool for Monday morning. Still open for other suggestions!

 

[sjwelds]

Yeah, those were a real pain when I did mine. The one I had to weld a nut on 4 or 5 times before it finally came out.
Good luck with it.

 

[madpogue]

Run the double nuts down far enough on the stud to have some stud sticking out, then "damage" those threads. Then, when you turn the double nuts again, the first one MIGHT dig into the damaged threads and start turning the stud. MIGHT.

Is the rounded/rusted nut still in play? If so, maybe a deep well extractor socket (13mm would probably be closest at this point) might grab it.

 

[jwalterus]

Is the rounded/rusted nut still in play? If so, maybe a deep well extractor socket (13mm would probably be closest at this point) might grab it.

I have a couple different styles of these for that situation:
https://www.craftsman.com/products/craftsman-10-pc-damaged-bolt-nut-remover-set-low-profile-bolt-out

Why not hit 'em with a grinder and drill them out? Is it still on the truck at this point? Might be better off taking off the manifold to do the work.

 

[saburai]

I managed to get the outboard one out by using more heat, Blaster and persistent effort. I ran out of time on the one closest to the starter. There's even less wiggle room with that one, I guess I'm pulling the starter. I'll try the double nut again maybe buggering up the threads for good measure. If that doesn't work, I'll get a stud extractor and give it a go. How hard is it to pull the manifold in the truck?

 

[icanfixall]

In this area you need plenty of heat and then cool down what was heated with AEROKROIL. PB blaster is nowhere's as good. Map gas torch also is better than propane heat. you want to heat it up.and cool down several times. Those threaded holes go all the way thru the flange so. any movement allows the penetrate to soak down by gravity. Moving the stud in and out also loosens it.

 

[saburai]

Thanks all!
I've been using Mapp gas and Blaster, I'll try more heat. Unfortunately AEROKROIL isn't prime but Monday, I'll see if one of the local commercial supply houses might have some
I ordered the extractor Scott suggested as well as this one:
https://www.amazon.com/gp/product/B01GKEBG9I/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Is it doable to pull the manifold in the truck??
Wish me luck!

 

[79jasper]

Try fastenal. Or if you have any oilfield supply places.

Sent from my SM-G892A using Tapatalk

 

[saburai]

Thanks, there's a Fastenalso not too far away.

 

[saburai]

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Worked like a champ!
$20 well spent.
https://www.amazon.com/Damaged-Extr..._desktop?_encoding=UTF8&psc=1&ref=yo_pop_d_pd

 

[chillman88]

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Worked like a champ!
$20 well spent.
https://www.amazon.com/Damaged-Extr..._desktop?_encoding=UTF8&psc=1&ref=yo_pop_d_pd

Sounds like one for the shopping cart... cool! Glad you got it!

 

[79jasper]

I wonder if one could use it with an impact?

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[saburai]

I wonder if one could use it with an impact?

Sent from my SM-G892A using Tapatalk

Yep, it states that it can be used with impact tools. It was a bit difficult to get the jaws open and the stud out. All in all, for a $20 Taiwan tool, I'm reasonably impressed and it seems like it will hold up. I did get the other tool that Scott recommend, it's simpler, more robust and will handle a larger stud. The trade off is that it's got a bigger footprint and it's offset, so you won't be using it with air tools.