Wanted crankcase recirculating valve

Cleaned up the garage, found parts laying around, but it turned out to be a complete Volvo 480? If you want to sell your car (480 only) you can place an advert here.

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gsa60
Started learning about 480
Posts: 96
Joined: Tue May 21, 2013 10:18 pm

Wanted crankcase recirculating valve

Post by gsa60 » Tue May 29, 2018 12:00 pm

Yep, valve is broken.
I want the one that conects to the block.

triumphtoledo
Started learning about 480
Posts: 78
Joined: Wed Oct 26, 2005 2:30 pm

Re: Wanted crankcase recirculating valve

Post by triumphtoledo » Wed May 30, 2018 10:38 am

For a Turbo?

gsa60
Started learning about 480
Posts: 96
Joined: Tue May 21, 2013 10:18 pm

Re: Wanted crankcase recirculating valve

Post by gsa60 » Wed May 30, 2018 11:32 am

Ah! I forgot.
Yes its for a 91 turbo.

Thanks and BR

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jamescarruthers
480 Is my middle name
Posts: 2500
Joined: Mon Jul 07, 2003 3:19 pm
Location: Cambridge

Re: Wanted crankcase recirculating valve

Post by jamescarruthers » Wed May 30, 2018 11:43 am

It is unlikely you're going to find one. You can upgrade and replace with some Audi parts.

viewtopic.php?f=24&t=19542&hilit=recirc‎
1987 Volvo 480 ES, 507274, 217 - Red (Ness)
2006 Citroen C6 Exclusive 3.0 petrol/LPG
2008 Mini Cooper convertible (Mau)

Previous 480's:
J123 CFU -- ES
J449 MNL -- ES auto
D864 CPV -- ES
L691 JFC -- Turbo
F70 MNR -- ES
H858 FGV -- Turbo auto
E981 KHM -- ES (509849)

triumphtoledo
Started learning about 480
Posts: 78
Joined: Wed Oct 26, 2005 2:30 pm

Re: Wanted crankcase recirculating valve

Post by triumphtoledo » Wed May 30, 2018 1:30 pm

I don't understand why a turbo valve acts as a satisfactory substitute for a breather - and may be why people have reported problems when fitting it.

When my breather fell apart, I could not get a new one and studied how it worked internally. Volvo stated that it had been calibrated inside, so I am unsure why fitting a turbo recirc valve can be seen as anything less than a bodge. I could be wrong but nobody could give me any satisfactory answers.

I have integrated a standard VW/Audi breather on my Turbo, so that the internal diaphragm valve is open when there is negative pressure in the inlet manifold (idling and overrun conditions) which allows only partial breathing to take place - as the valve itself is calibrated, although I recall the internal calibration hole is slightly bigger than the Volvo one - but it is the nearest I could find. Under boost, the valve closes and passes any blow-by gases into the turbo, as designed originally.

The car only passed its MoT today and I have covered a mere 40 miles in it, so I cannot confirm if it works effectively. As yet, I have not noticed oil being forced out of oil seals, etc, but a long motorway drive will confirm if the trick works. I will then share it openly.

R

gsa60
Started learning about 480
Posts: 96
Joined: Tue May 21, 2013 10:18 pm

Re: Wanted crankcase recirculating valve

Post by gsa60 » Thu May 31, 2018 8:48 am

Thanks James,
However that post refers to the non return valve connected to the idle controll valve.
The valve that I am looking for is the one that is inside the foam cilinder just next to it.
The valves are quite different.

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jamescarruthers
480 Is my middle name
Posts: 2500
Joined: Mon Jul 07, 2003 3:19 pm
Location: Cambridge

Re: Wanted crankcase recirculating valve

Post by jamescarruthers » Thu May 31, 2018 9:12 am

Oops! Sorry. Typing fast, thinking slow!
1987 Volvo 480 ES, 507274, 217 - Red (Ness)
2006 Citroen C6 Exclusive 3.0 petrol/LPG
2008 Mini Cooper convertible (Mau)

Previous 480's:
J123 CFU -- ES
J449 MNL -- ES auto
D864 CPV -- ES
L691 JFC -- Turbo
F70 MNR -- ES
H858 FGV -- Turbo auto
E981 KHM -- ES (509849)

eye of ra
Can tell where the 480 was built
Posts: 355
Joined: Tue Dec 04, 2012 7:33 pm
Location: Derbyshire

Re: Wanted crankcase recirculating valve

Post by eye of ra » Fri Jun 01, 2018 9:24 am

Assuming you are talking about Part 1 it is turbo specific and is a valve. If you are talking about part 8 it is the same part for all petrol engines across the whole 400 range and is an Oil Separator that attaches to the block.

Image

Not got a turbo but I think both are under the foam.
Current:
480 ES Auto 1989
480 Celebration 187
480 ES Auto 1991
CLK430 Conv 2001
Hyundai i10 2015

gsa60
Started learning about 480
Posts: 96
Joined: Tue May 21, 2013 10:18 pm

Re: Wanted crankcase recirculating valve

Post by gsa60 » Fri Jun 01, 2018 12:42 pm

Yes, i need the part 1.
Wheel in fact i dont need the foam thing.
Just the valve inside.

BR

triumphtoledo
Started learning about 480
Posts: 78
Joined: Wed Oct 26, 2005 2:30 pm

Re: Wanted crankcase recirculating valve

Post by triumphtoledo » Fri Jun 01, 2018 6:07 pm

They are obsolete - used ones are usually knackered anyway. If you find some new ones, let me know!

I had to make my own using these parts:

https://www.ebay.co.uk/itm/Engine-Block ... %7Ciid%3A1

and

https://www.ebay.co.uk/itm/VW-AUDI-1996 ... SwcgNZGg9a


plus some hose. I calculated these would perform closest to Volvo's specs. However, I have only driven the car for around 50 miles, so maybe it is a bit early to judge if it has been a success.

I can try and post pictures on one of the FB groups to show the installation, if it helps.

R

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