1999 S70 One of these head bolts is not like the others.

Post by **E Showell** » Tue May 05, 2015 12:12 pm

There are those on here who believe in "waking up" the head bolts with a hammer blow or two before loosening. Some swear by impact wrenches for removing them. I think luck has a bit to do with it as well. Although I haven't tested the theory, running the engine to heat things up a bit before attempting removal might work. Trouble is, usually, the reason you're removing the head bolts is that the engine won't run . . .

Post by **Brucebo** » Tue May 05, 2015 2:13 pm

E Showell wrote:There are those on here who believe in "waking up" the head bolts with a hammer blow or two before loosening.

That occurred to me ... after it broke. It helps shatter any corrosion cement.

Post by **abscate** » Tue May 05, 2015 7:43 pm

So you have a stuck piece in the block below the head?

Post by **Brucebo** » Sat May 09, 2015 5:47 pm

Success! After soaking a week in Liquid Wrench. I covered the top of the block with Vaseline and Saran Wrap to keep any chips from going any undesirable places. I started with a forward 1/8" cobalt drill bit (with a homemade bushing made out of glued together #8 steel flat washers to keep the bit centered). As the bit started to bite I felt the bolt come loose. I suspected a forward drilling would unwind any residual tension in the threads. I then switched to a 3/16 reverse drill bit and the bolt screwed right out. Took all of about 5 minutes. Took me longer to get the tools out. I stuck a magnet down in the hole a number of times to remove any leftover chips.

: Broken head bolt stub.

Post by **E Showell** » Sat May 09, 2015 6:09 pm

Bravo Zulu

1ezliving4ume · Post by **1ezliving4ume** » Tue Sep 01, 2015 3:47 pm

This thread saved my life!!! It work just as you guys described, thank you so much.

1999 S70 One of these head bolts is not like the others.

Re: 1999 S70 One of these head bolts is not like the other