 Valve guide position 1.7 liter heads, Cylinder head work |
|
|
|
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. |
|
|
| pgollender |
 May 19 2017, 08:30 AM
Post
#1
|
|
Member  Group: Members Posts: 193 Joined: 5-July 11 From: Sacramento Member No.: 13,281 Region Association: Northern California  |
 After hot tanking I noticed different lengths on my exhaust valve guides. Between the four exhaust guides ( two heads) the length of the top of the guide out of the head varied by 2 mm. Is this a problem or just sloppy work from P.O. ? Does it matter ? |
   |
 
|
  |
Replies
| Mark Henry |
May 19 2017, 07:04 PM
Post
#2
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
They're driven in, check the seat side I bet they look like they're extra long.
Even the left hand exhaust guide looks like it's sunk in too far, could be just the angle. Cause is likely they were loose and should have had OS guides. Bad valve float can drive them in as well. Surprised the boss isn't cracked. They must be cored and driven out from the camber side, then see if they are salvageable. Yes poor machine work and yes it does matter. |
|
|
|
Posts in this topic
pgollender Valve guide position 1.7 liter heads May 19 2017, 08:30 AM
malcolm2 It is not easy to find pictures of cylinder heads ... May 19 2017, 09:32 AM HAM Inc
After hot tanking I noticed different lengths o... May 19 2017, 07:52 PM pgollender "They must be cored and driven out from the c... May 20 2017, 09:11 AM
Mark Henry
"They must be cored and driven out from the ... May 20 2017, 10:39 AM porschetub Sorry double post. May 20 2017, 02:55 PM porschetub then this :(
I have a 1.8 bus head that did thi... May 20 2017, 03:01 PM pgollender
Guides may appear "tight" to you, but a... May 21 2017, 08:38 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 24th May 2024 - 04:45 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.