 Old NOS heads with "oil deflecting ring", Do they do anything good? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| larss |
 Jan 18 2012, 12:00 PM
Post
#1
|
|
Member  Group: Members Posts: 428 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia  |
One of my wery old NOS 1,7 (VW411) heads have a flexible ring on each valve stem named "oil deflecting ring" in Haynes manual for the Porsche 914.
The official Porsche parts list has no ring on the stem. I guess the rings are for reducing the amount of oil going ito the valve guides but since they were left out later i guess they did not help wery much? /Lars S |
   |
 
|
| ape914 |
Jan 18 2012, 12:28 PM
Post
#2
|
|
red locktite Group: Retired Members Posts: 240 Joined: 7-February 11 From: In front of a computer Member No.: 12,676 Region Association: None |
QUOTE(larss @ Jan 18 2012, 10:00 AM)  One of my wery old NOS 1,7 (VW411) heads have a flexible ring on each valve stem named "oil deflecting ring" in Haynes manual for the Porsche 914. The official Porsche parts list has no ring on the stem. I guess the rings are for reducing the amount of oil going ito the valve guides but since they were left out later i guess they did not help wery much? /Lars S that is known as a "valve stem seal", my engine does not have them (2 liter type IV) I guess if you have worn guides the seal might help keep down oil consumption. |
|
|
|
| Dave_Darling |
Jan 18 2012, 12:30 PM
Post
#3
|
|
914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
|
Valve stem seals. They were not installed on 914s; some manuals show them but that is from the VW application. I don't think later VWs used them either. I'm not sure why they were omitted, probably either because they actively caused problems or because they didn't help any and it cost more money to install them.
...But that's just a guess... --DD |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 18th May 2024 - 03:40 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.