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850 NA cylinder head interchange - what will work?

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

ollen001
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ollen001

850 NA cylinder head interchange - what will work?

Post by ollen001 » Tue Apr 16, 2019 1:24 pm

Not a frequent poster but an absolute frequent reader of MVS posts. I have been unable to find definitive advice for naturally aspirated cylinder head interchange. This is a request for advice and hopefully, actual definitive answer.

I need a cylinder head for:

1995 Volvo 850 GLT (this year of GLT had no turbo as opposed to later years)
B5254FS
naturally aspirated, non turbo
NO air pump (that I can see)
this model has no OBDII (this was the changeover year)
five speed M56 gearbox
VIN: YV1LS5504S1226658

cylinder head has Volvo p/n 9146335
casting on top has number 1001664

My proposed donor head is from:

1998 V70
B5254S
naturally aspirated, non turbo
NO air pump (that I can see)
automatic
VIN: YV1LW5548W2404109

cylinder head has Volvo p/n 9146337
casting on top has number 1001671

Will this head work?

If not, which Volvo p/n will work without modification (changing valves, etc)

Is it the casting number on top that is important, or the Volvo P/N?

Looking at the Volvo parts website, I get Volvo P/N 8111178 as cylinder head exchange that seems to fit both cars, however, I am assuming a rebuild service for Volvo just takes your head and gives you a head that will fit. Don't know if that p/n actually fits everything that they mention, meaning, it might just be a generic p/n used for exchange when you purchase that service. (I know, it is confusing to me, too.)

If anyone has lookup capability, I would appreciated the definitive answers you could give me.



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erikv11
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erikv11

Re: 850 NA cylinder head interchange - what will work?

Post by erikv11 » Tue Apr 16, 2019 1:43 pm

Yes, the donor you propose will work perfectly.

More generally, all 20 valve, North American non-turbo 95-98 heads are identical, regardless of what the engine numbers are or what the books tell you. Swap it in.

I'd replace the valve stem seals on the donor head, they are often bad by this point. Volvo only on that part.


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

ollen001
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ollen001

Re: 850 NA cylinder head interchange - what will work?

Post by ollen001 » Tue Apr 16, 2019 1:53 pm

Wow! That was quick!

Also, you can do mind reading. Because it's basically only valve stem seals that I need to replace at 132K miles.

Now, for the question which has been answered multiple ways on this forum and others:

Are OEM Volvo valve stem seals REALLY just Victor Reinz? The pictures don't seem to match, plus, the color is wrong, and, several people on various Volvo forums have said either Victor Reinz valve stem seals are the same thing, or, that they fail and Volvo OEM is the only way to go. I note that Elring, MTS, Ajusa, Victor Reinze, Mahle and other vendors offer them.

This head is going out to a professional rebuilder so that I have it on hand when we do the head (and get it out of my garage!) and we don't have to wait for it be be rebuilt. The spare head will go on the shelf, since, yes, at 132K miles, this was a gift car from a friend whose mechanic told her "You need a new engine since it's smoking". That was 15K miles ago. Did the EGR flame trap kit and renewed plugs, cap, rotor, plug wires, cam, crank, temp sensors plus all new everything else so I plan on keeping the car.

If I'm going to replace the valve stem seals, I need to know, from experience, should I really spend $135 on Volvo OEM or are Victor Reinz really the same thing?

Same question for cylinder head gasket? Volvo OEM or Victor Reinz?



Klausc
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Klausc

Re: 850 NA cylinder head interchange - what will work?

Post by Klausc » Tue Apr 16, 2019 2:24 pm

OEM head gasket only. If the Volvo seals are too expensive, then go with Reinz. If they fail in 100K miles, then replacing them is not a head removal option.
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erikv11


Klaus
If I had a larger garage, I could have more Volvos.

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callahanoffroad
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callahanoffroad

Re: 850 NA cylinder head interchange - what will work?

Post by callahanoffroad » Tue Apr 16, 2019 3:09 pm

I gotta jump in here, if your '95 has VVIS like mine you'll have to replace the intake manifold with a later manifold. The intake ports are shaped differently. I only add this as you also have a manual transmission, no air pump, and no obd2. But otherwise you should be fine. I've had to do a bunch of research myself before I rebuild my head.

The heads are compatible, but the intake manifolds are not.
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erikv11


Author, Chef, and Shade Tree Mechanic

1995 Volvo 850, Non-Turbo, VVIS, LH FI, Green, 215,000 miles. B5254FS engine. Herman. viewtopic.php?f=1&t=84393

1996 Volvo 850, died at 280,000

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erikv11
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erikv11

Re: 850 NA cylinder head interchange - what will work?

Post by erikv11 » Tue Apr 16, 2019 9:38 pm

As per callahan the safest bet is to get the intake manifold with the head. Or if you can't, I have a spare that matches the 98 head and will be driving to MPLS on April 27.

I agree with Klausc, head gasket is Volvo only.

Good news, full kit of Volvo branded valve stem seals is $76 plus shipping: https://parts.volvocarslisle.com/p/Volv ... 72424.html . Or get a price on Volvo 272424 at your local dealer (see viewtopic.php?t=71962).
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callahanoffroad


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

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