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392 PCV Valve Problem

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Blaise Castellano
New member
Username: moonfish

Post Number: 1
Registered: 08-2008
Posted on Saturday, August 23, 2008 - 03:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have 2 Palmer M-392 circa 1968.
These engines have what seems to be a PCV valve on top of the rocker arm cover. It is about 2 in
diameter with a rubber diaphragm and spring inside. It connects directly to the intake manifold with a vaccuum line.
Does any one know of a source for this prt new or used? The rubber diaphram is cracked and dried out . Does any one know the part number for this part? Any help is appreciated .
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MICHAEL H LANE
New member
Username: michaelhlane

Post Number: 1
Registered: 05-2010
Posted on Saturday, May 08, 2010 - 11:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

if someone responds to this posting email me a response as well. thank you
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brian mcguire
New member
Username: bmacguyver

Post Number: 2
Registered: 09-2010
Posted on Sunday, September 26, 2010 - 11:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

is it threaded or mounted in a rubber grommet?
IH engines normally have a flame arrestor mounted in one valve cover that goes to the air filter housing, the pcv normally comes out of the back of the valley pan mounted in a rubber grommet.

hth

mac
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blaise
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Posted on Tuesday, September 28, 2010 - 10:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Brian, thanks for your response. The valve is about 2 inches in diameter adn mounted in a rubber grommet on one end of the valve cover. It is attached to a rubber vaccuum line which is connected to the intake manifold itself. The valve has a rubber diaphram and spring connected to a small piston in a bore which is controlled by engine vaccuum to send blow-by back to the intake manifild. It looks like a primitive PCV valve.There is nothing connected to the flame arrestor or carb. I will take a picture of this valve and post it so you can see what it looks like.
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scott downey
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Posted on Wednesday, September 29, 2010 - 07:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I replaced those with PCV valves on my 392 palmers
I got the grommets and the PCV and made them work.
I actually have 2 pcv on each engine. I cant recall if there were 2 of those weird valves per engine or not.

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