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

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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

Post by E Showell »

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 . . .
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (sold)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

Brucebo
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Post by Brucebo »

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.

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abscate
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Post by abscate »

So you have a stuck piece in the block below the head?
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Brucebo
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Post by Brucebo »

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.
Broken head bolt stub.
Attachments
Home made bushing. Glued #8 steel flat washers.
Home made bushing. Glued #8 steel flat washers.
Last edited by Brucebo on Sat May 09, 2015 7:12 pm, edited 1 time in total.

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E Showell
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Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
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Post by E Showell »

Bravo Zulu
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (sold)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

1ezliving4ume
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Joined: Thu Jun 25, 2015 3:21 pm
Year and Model: 850 glt turbo 1997
Location: indiana

Post by 1ezliving4ume »

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

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