 Oil Filler Assembly Plug Question, I didn't notice this part on the engine that's in my car |
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| Highland |
 Sep 23 2022, 01:03 PM
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#1
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Senior Member  Group: Members Posts: 529 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California  |
I just wanted to verify that the plug shown should be there. I know the engine I rebuilt doesn't currently have it. It's part #9 I think on the PET. The picture is off a spare block.
Also, does anyone know if the head vents are required for a PVC? Do the head vents intake air or relieve pressure?   |
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| 914Sixer |
Sep 23 2022, 01:25 PM
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#2
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914 Guru Group: Members Posts: 9,040 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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Vented heads require breather, Not certain that PVC be in the loop.
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| mgphoto |
Sep 23 2022, 02:31 PM
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#3
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"If there is a mistake it will find me" Group: Members Posts: 1,366 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
Breather ports on the heads are routed through a flashback valve then to the air cleaner, the PCV is connected directly from that port, which is open on some, closed like that one and modulated with a valve on others, eventually connected to the air cleaner.
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| Lockwodo |
Sep 23 2022, 03:06 PM
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#4
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Member Group: Members Posts: 211 Joined: 23-December 21 From: Santa Cruz, Californnia Member No.: 26,193 Region Association: Northern California
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QUOTE(Highland @ Sep 23 2022, 12:03 PM)  I just wanted to verify that the plug shown should be there. I know the engine I rebuilt doesn't currently have it. It's part #9 I think on the PET. The picture is off a spare block. Also, does anyone know if the head vents are required for a PVC? Do the head vents intake air or relieve pressure? Part #9 and 13 are for one style of PCV valve. #9 is inserted from below the flange and #13 screws down onto it to clamp the valve in place. I had this style but replaced it with a PCV valve that just has a rubber grommet that the valve forces down into. |
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| Highland |
Sep 23 2022, 03:50 PM
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#5
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Senior Member Group: Members Posts: 529 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
My mistake. Misread the PET. I'm referring to the black plastic plug in my picture. This plug was used to plug the PVC access hole.
Is this plug suppose to be there? I guess it's not on the PET. |
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| Highland |
Sep 23 2022, 08:19 PM
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#6
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Senior Member Group: Members Posts: 529 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Is the plug in the green square suppose to plug the PCV access hole circled in orange or should the PCV access hole be left open?
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