PVC valve connection?

[The_Handier_Man1]

From: MinnieWinnie75  (Original Message)
Sent: 1/19/2006 4:21 AM

Hello,

I have a 1975 Minnie Winnie with a Dodge B300 Van Sportsman, 5,9L 360cid V8 2BBL, VIN F.

I have appreciated that the PCV valve has a hose that is not attached to anything (it is going to the ground). I think it should be attached to the carburetor or the intake manifold.

I have been observing the carburettor and it does not seem to have any free port, although there are several “holes” in the carburetor close to the PCV valve side.

My doubts are:

What brand and model of carburetor does it have mounted from factory (in order to look for documentation)?

Can these “holes” in the carburetor side be “closed” ports? In that case how can I open them?

Where should I connect the hose from the PCV valve?

I have appreciated a lot of smoke inside the RV but when idle the hose from the PCV valve almost does not releases smoke, Can the smoke come from this hose when driving at high rpm?

Thank you very much for your help and sorry about my english (I am from Madrid, Spain).



From: denison
Sent: 1/19/2006 10:34 AM

Yes, the hose from the PCV valve should attach to the carburetor, or the intake manifold. The original carburetor probably had a vacuum port, which a replacement carburetor on it today does not have. If you have the original carburetor, there might be a plug in the carburetor that would be a pcv valve hose port. It would be at the bottom of the carburetor, where the throttle plates/valves are.
To drill open a port on the carburetor could possibly ruin the carburetor, because the body of the new carburetor might be different internally.
If you can find a vacuum port on the manifold, you could attach the pcv valve hose at that location. It would be best if the pcv valve hose attaches as close to the middle of the intake manifold as possible. This is to make the air/fuel mixture as even as possible for the 8 cylinders. Possibly it could share the vacuum connection for the power brake hose.
The smoke from the pcv valve hose is atomized oil vapor from the crankcase. There would a small amount when the engine was at idle. There would be muchismo mas of that smoke when the engine was working harder to pull the motorhome, and turning faster (higher rpm).
I think your engine would be a 360-3. This is the heavy duty version of the 360-1 engine that was in the cars and pickup trucks. I think the carburetor could have been a Holley R-7088-A. Maybe it could also have been a Carter carburetor.


www.holley.com/data/Products/Technical/199R7948-5.pdf
At this URL is an instruction manual for a Holley Carburetor, and on page 4 you will see a pcv valve port.
http://www.holley.com/data/Products/Technical/199R7948-5.pdf The pictures take time to appear.
It would open into the intake manifold, very simple. Another picture on page 5 shows that carburetor from the bottom.

I use http://babelfish.altavista.com/ to translate words between languages.

How do you say 'gasket' in Spanish? My relatives in Mexico say 'impaque'.



From: MinnieWinnie75
Sent: 1/19/2006 11:16 AM

Thank you very much Denison,

In Spain we call "junta" to "gasket" for example we call "junta de culata" to the "cylinder head gasket". "Junta" also is used for all type of gaskets (engine water pump gasket, EGR valve gasket, etc.). My workmate that is from Venezuela says that in Venezuela they call them "empacadura" o "empaque".

Ok, about the PCV valve hose, I have seen the carburetor manual that you sent me. If I do not find one free port in mine, could I put a "T" connector in the power brake hose and connect the pcv valve to it? would it be dangerous? (loss of brake vacumm in some cases, or any other scary thing that I can not imagine)

The carburetor manual says "Powerbrake or PCV vacuum port" what should people do if they have to attach both hoses (powerbrake and PCV) in that carburetor?

Thanks



From: denison
Sent: 1/19/2006 7:20 PM

I think it is safe to use the power brake vacuum hose, and put a Tee fitting into it, to use with the pcv valve hose. That assumes the rubber hoses are in good condition, not 'debil' from old age.
The pcv valve is very reliable. When it becomes bad, it clogs up. Therefore it would never be a problem for the vacuum to the brakes. But have good rubber for those hoses!