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Posted by: ThinAir914 Nov 3 2004, 10:06 PM

How do you tell when your PCV valve needs replacement?

If you need one, where do you get it and about how much? I've checked Pelican and GPR, but can't find one. I haven't called Brad yet, but I know he can get anything. I'm just curious how much they cost. They aren't much for a Honda at my FLAPS, but I doubt they would have one for a 914.

Posted by: McMark Nov 4 2004, 04:07 AM

From the dealer. Who's got the part number?

Posted by: pbanders Nov 4 2004, 07:25 AM

Here is the information you need.

http://members.rennlist.com/pbanders/PCV.htm

Posted by: ThinAir914 Nov 4 2004, 09:57 AM

Thanks, Brad! That is great information. In all the years that I've had a 914, I've never done anything with the PCVV, except hook the breather hose up to it. On other cars it's always part of the maintenance routine, but for some reason I've never thought about it before as far as my Type IV is concerned.

The reason I asked about this is because I'm starting to assemble my 2.0L D-Jet. I want this to be an absolutely dry engine. One of the most often cited causes for the seep of oil from a Type IV engine is pressure within the crankcase, so it occured to me that if the PCV valve was not operating correctly, it could be part of why a Type IV leaks oil.

So is there an "engine breathing unit" that would be a good thing to put onto a Type IV to replace the stock PCV valve? You see a lot of these kinds of units on VWs, especially Type I engines, but these are almost always carbureted engines. Brad's helpful page makes it look like it's really no big deal to maintain or replace the stock valve, but I'm just wondering if there is a better way to go.

Posted by: SLITS Nov 4 2004, 10:03 AM

If you could make it fit into the oil filler assembly, most any PCV valve would work IMO.

And also remember you have the AFB valve which is also venting crankcase pressure via suction to the aircleaner.

Posted by: ThinAir914 Nov 4 2004, 10:21 AM

Posted by: Dave_Darling Nov 4 2004, 05:33 PM

I just got a PCV valve from Pelican. It's not in the catalog, but it is available. Some of the associated bits are not, though.

--DD

Posted by: ThinAir914 Nov 4 2004, 08:11 PM

Thanks Dave. So what's an AFB valve?

Posted by: pbanders Nov 5 2004, 09:40 AM

AFB = Anti-flashback. If I recall correctly, it's not a "valve", but a metal can filled with mesh that is connected through a hose on one side to the air box, and "tees" off on the other side to the heads. It's designed to stop backfire flame fronts from propagating to the heads, where the flame could ignite combustible gasses in the crankcase.

I just took a look in the factory workshop manual. Porsche also calls it a valve, but there is no valving mechanism inside of it that I'm aware of.

The crankcase ventilation system functioning is described on the web page I referenced in an earlier posting.

Posted by: ctc911ctc Apr 2 2019, 04:09 PM

ANYONE have a source for PVC valves? Mine is mighty leaky.

Posted by: 914Sixer Apr 3 2019, 07:22 AM

No replacements that I know of. 022 115 542. Might check with George at AutoAtlanta.

Posted by: dr914@autoatlanta.com Apr 3 2019, 08:35 AM

should be able to clean yours and as long as it does not leak be all set, it simply unscrews from the oil filler housing.

We have new ones but they are expensive

QUOTE(ThinAir914 @ Nov 3 2004, 09:06 PM)

Posted by: Not_A_Six Oct 19 2019, 08:32 PM

QUOTE(dr914@autoatlanta.com @ Apr 3 2019, 07:35 AM)

Posted by: 914Sixer Oct 20 2019, 07:50 AM

Let it soak in some parts cleaner or PB blaster for a day or so then see what happens. You should be able to hear cylinder going back and forth when you shake it.

Posted by: Not_A_Six Oct 20 2019, 05:28 PM

QUOTE(914Sixer @ Oct 20 2019, 06:50 AM)

Posted by: 914Sixer Oct 20 2019, 06:28 PM

Don't think I have ever seen a spring one. I will check the one in the warehouse later in the week.

Posted by: bdstone914 Oct 20 2019, 06:46 PM

QUOTE(ctc911ctc @ Apr 2 2019, 03:09 PM)

Posted by: bdstone914 Oct 20 2019, 06:49 PM

@http://www.914world.com/bbs2/index.php?showuser=22682 date='Oct 19 2019, 07:32 PM' post='2755826']
[quote name='dr914@autoatlanta.com' post='2702189' date='Apr 3 2019, 07:35 AM']
should be able to clean yours and as long as it does not leak be all set, it simply unscrews from the oil filler housing.

We have new ones but they are expensive
[/quote]

I tried cleaning it, but I think mine is sticking and/or worn and messing up my idle. I tried to order one from AA, but it looks like they're out of stock and they are NLA. Anybody got a current source for a PCV valve?

Thanks.
[/quote]

I have cleaned and replated ones for $25 shipped.
Bruce

Posted by: Not_A_Six Oct 20 2019, 06:59 PM

QUOTE(bdstone914 @ Oct 20 2019, 05:49 PM)

Posted by: Not_A_Six Nov 4 2019, 11:23 PM

QUOTE(Not_A_Six @ Oct 20 2019, 04:59 PM)

QUOTE(bdstone914 @ Oct 20 2019, 05:49 PM)

I have cleaned and replated ones for $25 shipped.
Bruce

Awesome! Thanks!

I sent you a message to set up the order.

How do you "replate" them? The case looks like it can't be opened...

Posted by: bdstone914 Nov 4 2019, 11:32 PM

@http://www.914world.com/bbs2/index.php?showuser=22682 ' date='Nov 4 2019, 11:23 PM' post='2759481']
[quote name='Not_A_Six' post='2756001' date='Oct 20 2019, 04:59 PM']
[quote name='bdstone914' post='2756000' date='Oct 20 2019, 05:49 PM']
I have cleaned and replated ones for $25 shipped.
Bruce
[/quote]

Awesome! Thanks!

I sent you a message to set up the order.

How do you "replate" them? The case looks like it can't be opened...
[/quote]


@http://www.914world.com/bbs2/index.php?showuser=1319

Well, I understand now what you mean by "replated". I got a shiny yellow-zinc-(re)plated anti-flashback valve in the mail today. Thanks. It looks beautiful.

Unfortunately, what I needed is a PCV valve.

So far, I'm 0 for 2 with this part. Anybody have a current source for a PCV valve for a '73 2.0?

Thanks.
[/quote]

What part are you describing? There is no true PCV valve on a D jet motor.

Posted by: 914werke Nov 5 2019, 12:56 AM

Depends on what you call a "true" PCV valve.
73-74 D-jet cars have a screw in "PCV" valve in oil chimney.
Its a simple spring loaded affair that you should be able to disassemble, clean & reuse.
PET: Ventilation Valve 914 PVC. No Longer Available Porsche 022 115 542.

Posted by: sixnotfour Nov 5 2019, 04:10 AM

Bowlsby #12


Attached image(s)

Posted by: sixnotfour Nov 5 2019, 04:18 AM

bowlsby

Posted by: Not_A_Six Nov 5 2019, 09:28 AM

QUOTE(sixnotfour @ Nov 5 2019, 02:10 AM)