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Timing belt broke, head replacement?

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

melmaclifeform
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Re: Timing belt broke, head replacement?

Post by melmaclifeform » Fri Jan 24, 2020 5:27 am

Awesome!

As for making sure I have the right tutorial, I can be pretty certain that the tutorial from RobertDIY is adequate for my '99, correct? I know whiteblocks are similar so there are plenty of guides to go off of, but I would like to be certain.
Driver of the Pimpmobile, a $350 S70 with only 132k miles.

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abscate
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abscate

Re: Timing belt broke, head replacement?

Post by abscate » Fri Jan 24, 2020 6:41 am

melmaclifeform wrote:
Fri Jan 24, 2020 5:27 am
Awesome!

As for making sure I have the right tutorial, I can be pretty certain that the tutorial from RobertDIY is adequate for my '99, correct? I know whiteblocks are similar so there are plenty of guides to go off of, but I would like to be certain.
I believe the 1999 is a hybrid

Solid cams, no VVT

Mechanical tensioner, not hydraulic like the -1998

So, that tutorial might not pick up on all the 1999 changes.

There is a thread on the 1999 changes in the 'Major Forum Topics' Sticky up top,

Sean in Boston was recently into his 1999 S70 NA for a head gasket - Ill link to his thread.

My favourite young guy is in Charlotte too, and despite his failings of youth Im sure he is one to mix up in with on Volvos.

(whew - almost dangled three prepositions)
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A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

melmaclifeform
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Re: Timing belt broke, head replacement?

Post by melmaclifeform » Fri Jan 24, 2020 6:50 am

A link to that thread would be great!
Driver of the Pimpmobile, a $350 S70 with only 132k miles.

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abscate
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Re: Timing belt broke, head replacement?

Post by abscate » Fri Jan 24, 2020 7:11 am

Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

melmaclifeform
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Re: Timing belt broke, head replacement?

Post by melmaclifeform » Sat Jan 25, 2020 5:10 pm

SuperHerman wrote:
Thu Jan 23, 2020 7:12 pm

You can source new valves for those bent or buy used ones. Pull the part number and see what other engines use it for used. The head is married to the cam cover - so don't go swapping.
What does it mean it's married to the cam cover? Wouldn't it be able to be swapped if it could be taken off? Or is that just an extra four hours of work?
Driver of the Pimpmobile, a $350 S70 with only 132k miles.

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SuperHerman
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Re: Timing belt broke, head replacement?

Post by SuperHerman » Sat Jan 25, 2020 6:40 pm

No they are married meaning they are machined as a unit. The head and cam cover are to be viewed as one piece.

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volvolugnut
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Re: Timing belt broke, head replacement?

Post by volvolugnut » Sat Jan 25, 2020 6:46 pm

What this means is Volvo factory selected a head and cam cover without the cam bearing bores, glued and bolted them together, and bored the cam bearing holes on both head and cam cover at the same time. This assured perfect alignment of head and cover cam bearings. Another cam cover will not have the cam bearings aligned for top and bottom surfaces.
This machining method assures great accuracy without the problems of using alignment pins while allowing the two surfaces to be separated for service.
volvolugnut
2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.

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