 Push rods - Stock vs Chromoly - Aluminum vs Steel, I did some searching, found some threads, but..... |
|
|
|
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. |
|
|
| Root_Werks |
 Jan 25 2011, 11:43 AM
Post
#1
|
|
Village Idiot  Group: Members Posts: 8,326 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest 
 |
I'm wondering what the benefit is one over the other?
Stock = lighter, less weight to change direction? Chromoly = stronger, "zero" lash? Steel = strongest, heavy? "Zero" lash? I ask because I have my first air-cooled motor with steel push rods and so far, liking them. They are quiet compared to the stock units that need the larger lash setting. Is it just they take more energy to push around than stock push rods? Inquiring minds want to know. http://www.dansperformanceparts.com/buggy/...%20pushrods.htm Does this mean both steel and chromoly are "zero" lash? I know it's been talked about before in non-push rod specific threads, kinda wanted to get one good thread that laid it all out. Thanks for any input. -Dan |
   |
 
|
  |
Replies(1 - 11)
| VaccaRabite |
Jan 25 2011, 12:01 PM
Post
#2
|
|
En Garde! Group: Admin Posts: 13,448 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
stock - cheap, limited use. Good only for stock applications.
Chromo - Expensive. Zero lash. Cut to fit. Probably not worth it for stock applications. Zach |
|
|
|
| Mark Henry |
Jan 25 2011, 12:24 PM
Post
#3
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Cr-Mo is stronger and lighter than domestic steel PR's
Stay away from the EMPI junk. Manton are the best, Bugpack 2nd choice. Slightly more noise than stock at zero lash, a lot more if you set it to .006 Zach is right, stock you can stick with stock. |
|
|
|
| orange914 |
Jan 25 2011, 12:46 PM
Post
#4
|
|
http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
my take on it... probably wrong (IMG:style_emoticons/default/blink.gif)
aluminum: stock to slight performance, no serious valve springs or lift con: limited perf. steel: stock heavy springs, con: heavy chromoly: cool factor (IMG:style_emoticons/default/smile.gif) , light but strong, con: expensive note: i'm not sure if it's the swivel feet, chromoly or both reducing the engine noise, but the VW "thrasher" engine sounds are greatly reduced from stock i think like most of us gear heads here, i really enjoyed setting up the valve train geometry too. (IMG:style_emoticons/default/screwy.gif) |
|
|
|
| Root_Werks |
Jan 25 2011, 01:19 PM
Post
#5
|
|
Village Idiot Group: Members Posts: 8,326 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest
|
(IMG:style_emoticons/default/idea.gif)
Thanks for the info. I should find out what my T3 is running. It's a 2275 with a pretty good cam. The sad part is when I put my stock 2.0 914 idle next to the T3 2.3 at idle, the 914 is making a heck of a racket compared to the T3. My 914 is stock, so probably not worth it. Just want it to shut up. (IMG:style_emoticons/default/dry.gif) |
|
|
|
| McMark |
Jan 25 2011, 03:45 PM
Post
#6
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Just weighed a stock pushrod and a Manton ChroMoly.
Stock Alu: 73g ChroMoly: 60g |
|
|
|
| r_towle |
Jan 25 2011, 04:50 PM
Post
#7
|
|
Custom Member Group: Members Posts: 24,584 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
|
Chopsticks
|
|
|
|
| Mark Henry |
Jan 25 2011, 05:04 PM
Post
#8
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(r_towle @ Jan 25 2011, 05:50 PM)  Chopsticks What ya talking about (IMG:style_emoticons/default/dry.gif) Chopsticks are for finding TDC (IMG:style_emoticons/default/biggrin.gif) |
|
|
|
| tornik550 |
Jan 25 2011, 05:06 PM
Post
#9
|
|
Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
QUOTE(Mark Henry @ Jan 25 2011, 01:24 PM) Stay away from the EMPI junk. What's wrong with the EMPI pushrods? Just curious. I have manton's. |
|
|
|
| gothspeed |
Jan 25 2011, 06:17 PM
Post
#10
|
|
Senior Member Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None |
Unless there is some 'first hand' horror story ........ so far I am liking these;
http://www.aircooled.net/new-bin/viewprodu...eyword2=ecv0010 |
|
|
|
| Chris Hamilton |
Jan 25 2011, 06:26 PM
Post
#11
|
|
Senior Member Group: Members Posts: 611 Joined: 7-March 06 From: Berkeley, CA Member No.: 5,687 |
Autocraft chromoly tapered all the way!
|
|
|
|
| orange914 |
Jan 25 2011, 08:47 PM
Post
#12
|
|
http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
QUOTE(Mark Henry @ Jan 25 2011, 03:04 PM) QUOTE(r_towle @ Jan 25 2011, 05:50 PM) Chopsticks What ya talking about (IMG:style_emoticons/default/dry.gif) Chopsticks are for finding TDC (IMG:style_emoticons/default/biggrin.gif) and i thought they were wood to gently clean the carbon deposits (IMG:style_emoticons/default/dry.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 27th May 2024 - 09:02 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.