 Valve Lash with Chrome Moly Pushrods? |
|
|
|
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. |
|
|
  |
| Charles Freeborn |
 Aug 12 2020, 11:42 AM
Post
#1
|
|
Member  Group: Members Posts: 244 Joined: 21-May 14 From: United States Member No.: 17,377 Region Association: Pacific Northwest  |
Title pretty much says it. What are you running for valve lash with Chrome Moly pushrods?
I've heard / read all sorts of numbers and theories. Some say that the steel rods don't expand at the rate the aluminum cases and heads do so you can run zero lash cold and it'll warm up to .06-8. Thx. |
   |
 
|
| wndsrfr |
Aug 14 2020, 06:50 AM
Post
#2
|
|
Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region 
|
QUOTE(Charles Freeborn @ Aug 12 2020, 09:42 AM)  Title pretty much says it. What are you running for valve lash with Chrome Moly pushrods? I've heard / read all sorts of numbers and theories. Some say that the steel rods don't expand at the rate the aluminum cases and heads do so you can run zero lash cold and it'll warm up to .06-8. Thx. Yep..."loose zero" when cold.... there's a zen to it.... set it so you can just rotate the pushrod with your fingers... |
 |
|
| Charles Freeborn |
Aug 17 2020, 11:17 AM
Post
#3
|
|
Member Group: Members Posts: 244 Joined: 21-May 14 From: United States Member No.: 17,377 Region Association: Pacific Northwest |
QUOTE(wndsrfr @ Aug 14 2020, 05:50 AM) QUOTE(Charles Freeborn @ Aug 12 2020, 09:42 AM) Title pretty much says it. What are you running for valve lash with Chrome Moly pushrods? I've heard / read all sorts of numbers and theories. Some say that the steel rods don't expand at the rate the aluminum cases and heads do so you can run zero lash cold and it'll warm up to .06-8. Thx. Yep..."loose zero" when cold.... there's a zen to it.... set it so you can just rotate the pushrod with your fingers... As I thought. Totally get the zen thing. I cut my teeth in the '70's on Honda motorcycles with valve lash settings in the .002" range. Although I can't see how anyone can get their fingers in there to spin the pushrod from the topside. With pushrod tubes removed yes, but without it would take child sized hands ... not my xxl meathooks.. Thanks. |
|
|
|
| michael7810 |
Aug 17 2020, 02:58 PM
Post
#4
|
|
Senior Member Group: Members Posts: 1,078 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region
|
QUOTE(Charles Freeborn @ Aug 17 2020, 10:17 AM) QUOTE(wndsrfr @ Aug 14 2020, 05:50 AM) QUOTE(Charles Freeborn @ Aug 12 2020, 09:42 AM) Title pretty much says it. What are you running for valve lash with Chrome Moly pushrods? I've heard / read all sorts of numbers and theories. Some say that the steel rods don't expand at the rate the aluminum cases and heads do so you can run zero lash cold and it'll warm up to .06-8. Thx. Yep..."loose zero" when cold.... there's a zen to it.... set it so you can just rotate the pushrod with your fingers... As I thought. Totally get the zen thing. I cut my teeth in the '70's on Honda motorcycles with valve lash settings in the .002" range. Although I can't see how anyone can get their fingers in there to spin the pushrod from the topside. With pushrod tubes removed yes, but without it would take child sized hands ... not my xxl meathooks.. Thanks. I agree. I could get to some of the pushrods but not all of them. What I did on those I could reach the pushrod was spin the swivel head on the adjuster. I verified that spinning the swivel head and push rod gave the same results. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 19th April 2024 - 07:24 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.