Frozen/rusted exhaust bolts

[cashflow50]

Asking the forum on how to remove these with out cutting pipes. I tried soaking them with PB and still no juice. I’m planning on keeping the tail pipe end with the connector in tact. Did anyone have any issues on removing them?

 

[BrianK14]

Cut them off. Torch, angle grinder, sawzall. Whatever you got to do the job.

 

[cashflow50]

Cut them off. Torch, angle grinder, sawzall. Whatever you got to do the job.

I need to retain the connector flange between the muffler and tail pipe. Grinder might be the best method.

 

[Joelzy]

Have you tried heat?

I've had some luck with soaking in pb blaster or liquid wrench then easing back and forth little by little, like loosen a little then tighten, loosen a little more, tighten, etc. seems to help break the threads free without breaking them.
Also, if one is loose and cooperative, put it all the way back in until you get them all out.

 

[Dieselchessy]

I generally clean off all the oils, then use a rust dissolver to remove the rust from the exposed threads, then soak with penetrating lube, then try to remove.

If that fails I start cutting.

I find with rusty exposed threads that stuff will turn ok for a thread or two and then bind up on the rusty threads and gall up. I try to clean the path first.

 

[Wildman Wells]

This is where you wish they would just break off and replace with new bolts.

 

[phattyduck]

I need to retain the connector flange between the muffler and tail pipe. Grinder might be the best method.

You cut the nuts/bolts, not the pipe/flange.

Like this, but with an exhaust bolt:

-Charlie

 

[riot983]

I would try a torch.

 

[tyrenta]

I generally clean off all the oils, then use a rust dissolver to remove the rust from the exposed threads, then soak with penetrating lube, then try to remove.

If that fails I start cutting.

I find with rusty exposed threads that stuff will turn ok for a thread or two and then bind up on the rusty threads and gall up. I try to clean the path first.

Good advice

 

[plcfcng]

if your trying to get the nuts off the one passenger side try heating up any nut that won't come off with a torch trying to save the studs you can clean up the threads with a Die. I busted a stud off one pulling it off glad I had a spare pipe but I could have put a nut and a bolt after drilling out the old stud.:jump:

 

[brillo_76]

Exhaust bolts are always trouble. Heat is your only chance. Lots of guys get the glowing red hot the soak them in penetrating oil. The exhaust flanges bolts. The one at the cat and the tailpipe. I actually put stainless steel bolts in them.

I am experimenting with super high temp paint to see if this keeps the threads from oxidizing. Will be a few years before I have an answer if that works or not.



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[phattyduck]

Exhaust bolts are always trouble.

Even in sunny Southern California, they are a problem.

Three welded nuts later (and more stud broken off each time), we just drilled and used a bolt/nut.

-Charlie

 

[brillo_76]

Even in sunny Southern California, they are a problem.

Three welded nuts later (and more stud broken off each time), we just drilled and used a bolt/nut.



-Charlie

I know in Mesa Az. The bolt heads dont even oxidize its that dry. Mostly I can get them off the front head pipe but sometimes... I end up like Charlie did here.

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[MStudt]

Torch!

Get the nuts red, and they'll come off. You should hear them pop loose as well. Another thing you can do is heat them up, and hold a candle to the threads. The heat will draw the wax in, and that might even free them up.

Mike

 

[cashflow50]

Thanks guys for all of the advice and suggestions. This forum rocks!!!!