Snapped off an exhaust bolt

This is Usenet. The "rest of us" have been having a broader conversation.

The OP described a "built in" stud, suggesting it might have been modified with a pressed-in stud (although it apparently on further exam is not).

A follow up denied that splined exhaust studs existed, saying "never seen or heard of a pressed fit exhaust stud in any vehicle", to which I have been responding that they are in the TJ as a prime example. And then some know-nothing with a subscripted name suggests DC, NAPA, and I are all wrong, that splined studs are for wheels, not exhaust manifolds.

Well, a few post's back you were quoted as saying

"Forget the advice from the more-macho-than-thou types about rusty bolt extraction."

Since I was one of those attempting to help someone with a fairly miserable problem and you were the idiot trying to obscure the problem and offer irrelevant information, I could have taken offense to your comments. But this is usenet, I just expect a pile of BS to spew out occassionally.

No need to resp> RoyJ writes:

Some use Usenet for technical advice, and learn and benefit. Some pick fights for a twisted hobby, or sulk about, taking offense and squealing "kill file" when confronted with their own bafflement.

Hold on there Roy..... are you saying I missed an opportunity to be offended?

I admit ridiculing the risible, but not insults.

Cars are repaired by manly application of technical facts. You don't get girly credit for just trying.

Cars are 'not' repaired by bozos that read books and toss out bullshit about parts that are not applicable while insulting folks offering 'real life' experience help.

Have you ever taken off a YJ's exhaust Mr. 'Book' man?

I mean there was even once this one so called 'engineer' that Piled it Higher and Deeper who came on this group insisting he 'knew better' than the mechanical design engineers about what his bumper could and could not hold. He stupidly insisted that a TJ's stock bumper can handle a trailer hitch 'despite' all the folks that have seen just how easy a TJ's bumper pulls off in real life and the designers stating it isn't structurally sound and the 'fact' no one makes such a hitch for a TJ because of this. We can only hope he doesn't kill too many people with his arrogance.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 (More Off Road album links at bottom of the view page)

Tsk, tsk. Citing imaginary authorities and misquoting to support our peeves, are we?

My light-duty hitch still performs flawlessly, by the way.

Copies of the plans downloaded in 2006: 932.

Deaths, injuries, lawsuits, etc., attributed to it: 0.

You are right, that was petty, sorry.

Mike

of bolt left to grab on to, but not enough that it is

be able to unscrew it from the manifold fitting,

lubricant? Do I replace it with a headless bolt (do they

What I actually ended up doing is this..

I went and bought some PB blaster. I sprayed it all over the stud from top and bottom one night one and let it sit for a couple of hours. Tapped it with a hammer and resprayed and let it sit over night. I pulled out the vice grips the next day and could not budge it. So I applied more PB Blaster, ventilated the garage (this stuff is pretty noxious), and let it sit for a couple of hours. Tapped it again and tried again with the vice grips. Nothing. Did this every

3-4 hours for the next couple of days. After wearing off all the threads and having nothing left to grip on the stud, I went to Sears to have a gander at stud extractors. This was after the local part stores had nothing to loan out and nothing that looked promising on the shelf. I came across a sud extractor that you tap onto a stuck stud. It has what looks like a small star pattern in it. You tap it onto the stud and the points of the star cut right into the stud.

vice grips. I was able to put an impact socket with extension over the top of that. From there I put the impact wrench in reverse, said a small prayer that this wouldn't get any worse, and fired it up. After several seconds of hitting on it it broke free. A few seconds later it had screwed on out. I was so pumped that the impact wrench came in handy again (just got it a few weeks ago to help in removing the flywheel). A few minutes of cleaning up the area and screwing in the new stud, and the muffler was assembled and the jeep was ready to fire back up. Now my only problem is getting that stud out of my extractor tool.... for some reason they did not include directions on that : )

Thanks to everyone for the help. I think I bought my last can of WD40.

WD40 is good for spraying on satellite TV coaxial connections. I wouldn't be without it.

Earle

Might I recommend a plumbers pipe wrench to grab the stud instead of vise grips. The difference is the pipe wrench continues to grab harder the harder you pull where the vise grips have a fixed clamping force.

The make small pipe wrenches too.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail > >>> Yeah, I realized the WD40 is not the best for rust. I actually have plenty

of bolt left to grab on to, but not enough that it is

be able to unscrew it from the manifold fitting,

lubricant? Do I replace it with a headless bolt (do they