Heating bolts to break free

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Sep 11, 2006 | 06:13 PM

#16

DanJ

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From: Central Mass

Quote:

Originally Posted by Cirrusly Evolvd

Uhm, physics says that heating the bolt will make it expand. Try cooling it down and see if that helps. Also if you give a nice little tightening snug then loosening, it my break free. Had to do that all the time on the airplanes I work on....all the damn corrosion.

I believe you heat up the bolt/nut to expand it so it will break up the rust. I've never heard of someone cooling down a bolt to break it loose

Sep 11, 2006 | 07:38 PM

#17

althemean

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From: Phoenix

Quote:

Originally Posted by ibanez_926

does no1 know about kroil. Its the greatest stuff in the world

I've suggested this in other stuck bolt threads. But the average guy just cant get it. Aviation mechanics, machine shops. Kroil just isnt very common in autozone ect.

Sep 12, 2006 | 05:04 AM

#18

barneyb

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From: Grand Island, NE

Quote:

Originally Posted by evotico

good to know Its either going to break free or Break off... What about an Impact gun has anyone tried that ?

It is what I use along with PB - recommend using safety googles if doing this.

Sep 12, 2006 | 06:06 AM

#19

bigfishs

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You can get an electric impact gun from habor frieght tools for 50 bucks. Up to 300ftlb of torque with a hammering action. As for heating, the idea is to quickly heat the nut so it expands more than the bolt, loosening it!

Sep 12, 2006 | 11:54 AM

#20

althemean

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From: Phoenix

I think he has a stuck stud.....or did I read it wrong?

Sep 12, 2006 | 02:29 PM

#21

MREvOTard

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From: sacramento

i do this all the time, i own a muffler shop, the only thing is when it is heated up its more likely to braek or turn with the nut stuck on there. spray a **** load of penetrating oil it might help and get a nice 500lbs torque gun.

Sep 12, 2006 | 08:45 PM

#22

red evo8

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From: Norman, OK

Quote:

Originally Posted by zbomb

Breaker bar is one of the best tools to own. My.02

+1 but if you want to go all out ... wd-40 +breaker bar i've never had to go all out with gas torches to get a bolt off my exhaust sys.

Sep 12, 2006 | 10:03 PM

#23

rexg

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From: Bay Area, CA

i have an 05 with 13,000 miles on it so when i replaced my catback, i knew what i was up against. what i used was a long 17mm open wrench(for the cat), a 14mm ratchet (for the muffler bolts), and a hammer (that is after soaking it with wd40 of course. even if i heated the muffler bolts, i would not want to heat my 02 sensor. got it all off and replaced my catback. everything is good after 500 miles of driving.