these evil little headbolts -
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Unread 03-14-2014, 10:02 AM   #1
Registered User
1980 CJ5 
Join Date: Mar 2014
Location: Phoenix, AZ
Posts: 1
these evil little headbolts

How the heck do i get head-bolts out of the head of my 258, i have a leaking head gasket as well as a freeze plug at the rear of the motor. During my tare down everything was going fantastic coming out with ease and now that i just have the head bolts to pull out, there wont budge. I've heard that maybe one or maybe even three get stuck, but not all of them. so far I've tried both liquid wrench and wd-40 and both have failed to even give me any results. so does anyone have a secret way to loosen these bolts?

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Unread 03-14-2014, 10:06 AM   #2
Web Wheeler
Matt1981CJ7's Avatar
1981 CJ7 
Join Date: May 2011
Location: Elbert, CO
Posts: 13,340
2 foot long cheater bar.
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Unread 03-14-2014, 10:06 AM   #3
Web Wheeler
1974 CJ5 
Join Date: Jan 2005
Location: Santa Maria
Posts: 1,611
Let the penetrating oil sit for awhile then try a bigger wrench. You can try to turn them in slightly then back them out. If that fails you could try a impact gun or take it to a machine shop.
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Unread 03-14-2014, 10:31 AM   #4
Mike Romain
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1986 CJ7 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 16,555
Figure the penetrating oil has to get past the bolt head and run down about 6" before it gets to threads.....

I second using a bigger wrench or cheater bar. I don't think I have ever heard of anyone snapping them with a bigger wrench.

If they are on that tight and need that much to break them loose, I would not be reusing those ones. They are likely to be twisted which makes a proper retorque hard to do. Once twisted, they get soft.
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bolt removal , head removal

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