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1998 v70 XC exhaust manifold leak and stripped bolt

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, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Ludermilch
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Year and Model: 98V70XC 98V70R 01C70
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1998 v70 XC exhaust manifold leak and stripped bolt

Post by Ludermilch »

I just wrapped up doing a head gasket job and went to crank up the car when exhaust was escaping from around one of the exhaust manifold gasket .. In an effort to try to seal it I tightened down the bolts a little bit more and ended up stripping the bolt. I am about to tap a new thread in the head, but why would the exhaust manifold nut bolt down properly to the head?
1998 V70XC
2001 C70
1998 V70R
2000 Subaru Outback VDC
Perception Fontana Tandem Kayak

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erikv11
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Post by erikv11 »

Did you strip the bolt (it is actually a stud), or strip the head? The stud could just be replaced.

Not sure what you are asking about "why would ...?"
'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, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

Ludermilch
Posts: 106
Joined: Tue Mar 18, 2014 9:54 pm
Year and Model: 98V70XC 98V70R 01C70
Location: Georgia Mountains
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Post by Ludermilch »

I stripped the threads in the head.

Cylinder 2 exhaust was leaking bad between the Manifold and head. All others seemed to seal properly. The gasket is there. Does it bind sometimes when bolting it up?
1998 V70XC
2001 C70
1998 V70R
2000 Subaru Outback VDC
Perception Fontana Tandem Kayak

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erikv11
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Post by erikv11 »

OK sure, I see.

I think it has to be an issue with the gasket if only one location is leaking, and the leak is between the manifold and the head. The manifold and the head are both super rigid, if there was something binding or in the way then that whole end of the manifold would not sit flush.
'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, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

Ludermilch
Posts: 106
Joined: Tue Mar 18, 2014 9:54 pm
Year and Model: 98V70XC 98V70R 01C70
Location: Georgia Mountains
Has thanked: 1 time
Been thanked: 1 time

Post by Ludermilch »

Does this mean I have to remove the head again to fix the gasket?
1998 V70XC
2001 C70
1998 V70R
2000 Subaru Outback VDC
Perception Fontana Tandem Kayak

precopster
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Post by precopster »

As erik was explaining it is a stud and nut.

I too was guilty of not separating the nut from the stud on my 98 V70R when I refirbished the head last year due to corrosion. I just bolted the studs with nuts complete and didn't strip them.
Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

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erikv11
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Post by erikv11 »

I'm suggesting the issue must be with exhaust manifold gasket, not the head gasket. I'm assuming that's where the leak is. So you will likely need to pull the exhaust manifold off to fix that gasket, but the head should be OK right where it is.

You're going to want to pinpoint the source of the exhaust leak before moving ahead.
'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, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

Ludermilch
Posts: 106
Joined: Tue Mar 18, 2014 9:54 pm
Year and Model: 98V70XC 98V70R 01C70
Location: Georgia Mountains
Has thanked: 1 time
Been thanked: 1 time

Post by Ludermilch »

I know it's cylinder #2. I am currently working to remove the exhaust manifold. It's a task in itself with that turbo attached. Better than tackling the head again.
1998 V70XC
2001 C70
1998 V70R
2000 Subaru Outback VDC
Perception Fontana Tandem Kayak

User avatar
erikv11
Posts: 10292
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, V70, S60R, XC70
Location: Iowa
Has thanked: 141 times
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Post by erikv11 »

Sounds good, I mean pinpoint that it is between the manifold and the head (it pretty much has to be though ...).

If it comes to it you can pull the turbo off from the top, its not too bad really, you do have to undo a couple of fasteners from underneath too. I sort of lay on top of the engine to get the last ones off then turbo then pull it out.
'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, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

Ludermilch
Posts: 106
Joined: Tue Mar 18, 2014 9:54 pm
Year and Model: 98V70XC 98V70R 01C70
Location: Georgia Mountains
Has thanked: 1 time
Been thanked: 1 time

Post by Ludermilch »

Why in the name of all is there a Square nut holding the exhaust manifold bracket to the lower block?
1998 V70XC
2001 C70
1998 V70R
2000 Subaru Outback VDC
Perception Fontana Tandem Kayak

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