Jump to content



Photo

It Is Official, Head Gasket Replacement Sucks, '98 S70 T5


This topic has been archived. This means that you cannot reply to this topic.
11 replies to this topic

#1 Mike94531

Mike94531

    Level 1 Member

  • Supporting Member
  • 28 posts

Posted 29 November 2008 - 05:02 PM

Got the news from the wife on Wed that as she drove down our street the temp gauge pegs, oil light and check engine light go on and car is now running like cr@p.

I get home, pull dipstick, what a lovely sign to see water mixed in with the oil sad.gif

Anyways, spent way too many hours yesterday taking the head off, spent more time on one stupid nut trying to get the turbo off than I'd like to admit in public !!!

Head is off, I see no obvious signs of failure of the HG or the head, I'll still take the head to the machine shop and have it checked out, hopefully they are open today as they said they would be.

Car has 168K miles and a bunch of oil in the intake, going to rebuild the turbo, any recommendations for kits or are the eBay kits okay??

I bought new headbolts, are they still torque to angle?

Thanks,

Mike Mueller
Antioch, CA

'98 S70 T5, 168K miles
'78 242, 400K + miles



#2 POSTITSORGTFO

POSTITSORGTFO

    MILFSPEED

  • Gold Member
  • 30,728 posts

Posted 29 November 2008 - 05:05 PM

I would replace the head since it would suck to get it on and then the valve seals be all but shot also .

but while doing this do

Tblet
Waterpump
tensoners


2013 Buick Regal 2001 V70XC-M66 1998 C70 GT


#3 sconeman

sconeman

    Level 4 Member

  • Vendor
  • 4,480 posts

Posted 29 November 2008 - 05:27 PM

QUOTE (Mike94531 @ Nov 29 2008, 05:02 PM) <{POST_SNAPBACK}>
Car has 168K miles and a bunch of oil in the intake, going to rebuild the turbo, any recommendations for kits or are the eBay kits okay??


gpop-shop or kansia motorsports has them for your turbo. for gpop just go to thier website. should do PCV and all vac new lines/ elbows while your at it not to mention replace CBV diaphram.

do you plan to do a ny upgrades?



#4 Mike94531

Mike94531

    Level 1 Member

  • Supporting Member
  • 28 posts

Posted 29 November 2008 - 07:27 PM

no upgrades right now, need it back on the road ASAP, motors are cheap enough I think I'll grab an extra one and start to go thru that once I finish building my new 242 motor....

good call on the vac lines, many are on their way out...the plastic covers for much of the wiring just crumbled at the slightest touch, so those too will need replacing..

belts and tensioners and waterpump, I replaced about 20K mile ago...

installing new raditor and all new hoses as well this time around...

#5 jdlc

jdlc

    Level 3 Member

  • Lifetime Supporter
  • 1,688 posts

Posted 29 November 2008 - 07:38 PM

QUOTE (Mike94531 @ Nov 29 2008, 12:02 PM) <{POST_SNAPBACK}>
Got the news from the wife on Wed that as she drove down our street the temp gauge pegs, oil light and check engine light go on and car is now running like cr@p.

I get home, pull dipstick, what a lovely sign to see water mixed in with the oil sad.gif

Anyways, spent way too many hours yesterday taking the head off, spent more time on one stupid nut trying to get the turbo off than I'd like to admit in public !!!

Head is off, I see no obvious signs of failure of the HG or the head, I'll still take the head to the machine shop and have it checked out, hopefully they are open today as they said they would be.

Car has 168K miles and a bunch of oil in the intake, going to rebuild the turbo, any recommendations for kits or are the eBay kits okay??

I bought new headbolts, are they still torque to angle?

Thanks,

Mike Mueller
Antioch, CA

'98 S70 T5, 168K miles
'78 242, 400K + miles


Is it possible it's rad failure and not HG if there's no sign of HG failure?

Click Me to save $150 on 94-98 Turbo Cooler Lines

* SOLD - Joy.D - 98 S70 T5M Blk/Blk, 17psiST, Volans, R-mani, 3"dp/obxExhaust      * GLT'ed 98 White V70AT N/A - totaled 

* 01 V70 T5M Green/Blk - my DD     /   * 98 C70 2.3T5A Blk/Gray Coupe - other car     /   * 06S60 2.5T Blk/Blk - wife's DD


#6 Cal3thousand

Cal3thousand

    Level 3 Member

  • Lifetime Supporter
  • 2,065 posts

Posted 29 November 2008 - 07:50 PM

Head bolts still torque to 130 degrees on the final stage. That's after 20nm and 60nm IIRC.
1994 854 Turbo
Custom V70R lower front valance
17x7.5J ET43 Propus C on 225/45R17 Hankook Ventus V12 Evo K110
Free 2GB DropBox account with bonus 250MB in this link: To the cloud!
Posted Image

#7 Keaton85

Keaton85

    My zip tie is bigger than yours.

  • Members
  • PipPipPipPipPip
  • 8,432 posts

Posted 29 November 2008 - 10:12 PM

Ok heres the run down, this is what I would do....

Keep this in mind. The head gaskets are REALLY REALLY RARE to fail...RARE!! so it might have not even been that. Thats besides the point..

Replace:
Valve stem seals
Cam seals
Head gasket
Intake & exhaust gaskets
thermastat
temp sensor
Complete PCV system (Replace with NEW, I repeat NEW... AGAIN... NEW NEW NEW!)
Timing belt even though it was replace at 20K, I would do it just due to the stress of taking it off and on.
Top motor mount if its bad. (good time)

Don't:
Rebuild the turbo
Reinstall the old PCV system

Do:
Use the old head bolts... they are good for one more time...




#8 Keaton85

Keaton85

    My zip tie is bigger than yours.

  • Members
  • PipPipPipPipPip
  • 8,432 posts

Posted 29 November 2008 - 10:20 PM

As for tightening....

Work from the center out

Stage-1: Tighten to 20NM
Stage-2: Tighten to 60NM
Stage-3: 130 degrees

Just like stated above

#9 Mike94531

Mike94531

    Level 1 Member

  • Supporting Member
  • 28 posts

Posted 30 November 2008 - 06:35 AM

Why no rebuild of the turbo?

It will need it sooner or later correct??

I just figure since I have it removed, it would be a good time.

I'll have to look at the manual to figure out what all is part of the PCV system, I broke a few plastic tubes that went from the turbo inlet and wrapped around the head, I think they go someplace below the intake which I have not fully removed yet.

Head is shaved, it was off a good .012" with a precision straight edge placed against it.

Bought new head bolts already, guess I could return them to help offset the cost of more items I'll need to add to my list for the R&R of the head.





#10 Keaton85

Keaton85

    My zip tie is bigger than yours.

  • Members
  • PipPipPipPipPip
  • 8,432 posts

Posted 30 November 2008 - 06:39 AM

If you know what you are doing and want to spend $70 bucks on the rebuild kit then sure go for it. But if you dont know what you are doing then you are going to be shooting a lot of F-bombs out when you take the turbo apart.

How much play is there in the turbo?

Just keep in mind that these turbos don't ever really fail unless you really mistreat them.

Edit: that tube that you broke it the PCV tube running under the intake to the oil trap... do some research on replacing that system. NEW!

#11 Mike94531

Mike94531

    Level 1 Member

  • Supporting Member
  • 28 posts

Posted 30 November 2008 - 06:55 AM

A few more dozen or so f-bombs won't hurt anyone, I just make sure the kids are in the house smile.gif

Yep, just read a PCV article here and on Bay-13, still need to figure out where that last bolt is holding my intake manifold on is, feels like it is on a rubber isolator or something.

#12 Keaton85

Keaton85

    My zip tie is bigger than yours.

  • Members
  • PipPipPipPipPip
  • 8,432 posts

Posted 30 November 2008 - 06:57 AM

there is a bracket under the intake manifold holding it on...






Copyright 2013 Volvospeed