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Warped cylinder heads

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

davep84
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Warped cylinder heads

Post by davep84 » Fri May 01, 2020 3:52 pm

Hi Everyone,
I'm working on a 98 V70 GLT that I purchased recently. It was pressurizing the cooling system so I pulled the head. The machine shop says it was warped beyond repair. After that I bought another used one and now the shop says it's worse than the original one. Any tips on finding a good one?

melmaclifeform
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Re: Warped cylinder heads

Post by melmaclifeform » Fri May 01, 2020 6:54 pm

Have you considered just taking the original head to a machine shop and having it rebuilt?
1999 S70- Currently in pieces
2000 S70 GLT SE- The car that helps keep oil prices up with the amount it leaks
2004 XC70 AWD- It's the wagon

kklepack
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Re: Warped cylinder heads

Post by kklepack » Fri May 01, 2020 9:32 pm

I would also try another shop for second opinion.

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RickHaleParker
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Re: Warped cylinder heads

Post by RickHaleParker » Sat May 02, 2020 1:17 am

Clearwater on eBay has a remanufactured heads.

Volvo 850 Inline 5 Cylinder Head Cast # 1001716 REBUILT 1997

Volvo 850 2.4 DOHC 5Cyl Cylinder Head Casting #1001525 ONLY 92-97 REBUILT

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This is from an individual only $442.00 Remanufactured and 20 new lifters.

There are more there keep digging.
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Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

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erikv11
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Re: Warped cylinder heads

Post by erikv11 » Sat May 02, 2020 11:30 am

davep84 wrote:
Fri May 01, 2020 3:52 pm
Hi Everyone,
I'm working on a 98 V70 GLT that I purchased recently. It was pressurizing the cooling system so I pulled the head. The machine shop says it was warped beyond repair. After that I bought another used one and now the shop says it's worse than the original one. Any tips on finding a good one?
Pull one yourself from wrecked junkyard car is probably your best bet. You'll want to rebuild it as you suggested, but it will be straight and therefore trouble free when you are done. HPT or LPT have the same head, non-turbo head has different valves.

I wouldn't trust a head from Clearwater or any high-volume rebuilder, the machine work is probably great but it is fair to assume they are putting in cheap valve stem seals. Valve stem seals are an achilles heel on these engines. Only use Volvo branded valve stem seals on a rebuild, cost is about $80 for a full set from Volvo. Similarly, I wouldn't trust any eBay head unless I could get confirmation they used Volvo branded valve stem seals.
These users thanked the author erikv11 for the post:
rspi
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

davep84
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Re: Warped cylinder heads

Post by davep84 » Sat May 02, 2020 1:38 pm

Ok. I'll keep checking. Ones from 99 and up won't work right? Thanks for all of the replies!

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RickHaleParker
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Re: Warped cylinder heads

Post by RickHaleParker » Sat May 02, 2020 2:15 pm

davep84 wrote:
Sat May 02, 2020 1:38 pm
Ok. I'll keep checking. Ones from 99 and up won't work right? Thanks for all of the replies!
I would get a hold of the seller in the last link and ask what it came out of. The 850s used that cast number. It is a P80 head.
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Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

davep84
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Re: Warped cylinder heads

Post by davep84 » Sat May 02, 2020 4:05 pm

Another thought: What about buying the one from Clearwater and then putting Volvo branded valve stem seals on before I install it?

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smacknab
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Re: Warped cylinder heads

Post by smacknab » Sun May 03, 2020 6:20 am

davep84 wrote:
Sat May 02, 2020 4:05 pm
Another thought: What about buying the one from Clearwater and then putting Volvo branded valve stem seals on before I install it?
Would you be putting in the seals yourself? If you're paying someone else to do it I think you'd be better off having a machine shop surface and fix an old one.

For reference I brought my head to a machine shop that my Volvo dealership uses and he ran my head right after another, lapped some valves and installed new seals I brought him for 350 cash. Seals cost me about 120-140 (I bought 20 individual seals from my dealer at ~$6-7 each) but I later found out Volvo sells a pack of 24 seals for cheaper.
99 s70 NA m56 - >213k miles

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rspi
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rspi

Re: Warped cylinder heads

Post by rspi » Sun May 03, 2020 10:07 am

Heads from '94 through '98 should work.

Caution, if the head was warped that bad you may want to consider swapping the engine. Did fluids mix?
'95 855 T-5R M, Panther - 22/28 mpg
'98 S70 GLT, Lil' Red 25/32 mpg
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Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

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