 Quick question about AA pistons..., Which way does the arrow point? |
|
|
|
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. |
|
|
| BMXerror |
 May 3 2008, 09:12 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842  |
Well, anyone who's used them? Does the arrow point up or down?
Mark D. |
   |
 
|
  |
Replies
| r_towle |
Sep 23 2011, 06:42 PM
Post
#2
|
|
Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
|
measure the wrist pin placement to see if it is centered in the diameter of the piston.
If it is offset (somewhere around 8mm) that would be the bottom of the piston on a stock motor....and the top in a race motor...lol If they are offset, you want the rod closer to the bottom of the motor...I hope that makes sense. Makes it quieter with less piston slap when it reverses direction. Early 911 had this...then it went away..then it came back again. beetle and 356 and type 4 have the offset pins. Rich |
|
|
|
Posts in this topic
BMXerror Quick question about AA pistons... May 3 2008, 09:12 PM
SLITS Call the doctor .... he'll know ... available ... May 3 2008, 09:53 PM McMark The piston industry standard is to make a mark tha... May 3 2008, 09:59 PM
hot_shoe914
The piston industry standard is to make a mark th... Sep 22 2011, 03:08 PM
draganc
...The piston industry standard is to make a mark... Sep 22 2011, 08:34 PM BMXerror No, they're basically 1.7 Euro stockers, but t... May 3 2008, 10:05 PM SLITS Are there any other markings on the piston crowns? May 3 2008, 10:13 PM brer pics? May 4 2008, 11:34 AM BMXerror
pics?
Only the mystery arrow and a number (89.95... May 4 2008, 12:22 PM Headrage Look inside the pistons and see if there is a litt... May 4 2008, 11:55 AM BMXerror Pic.
Mark D. May 4 2008, 12:26 PM brer only AA can help you me thinks.
:confused: May 4 2008, 09:18 PM tod914 Is it possible the arrows where removed and put on... May 5 2008, 01:05 AM hot_shoe914 Here is my question. If the pushrods are on the bo... Sep 22 2011, 03:24 PM Dr Evil The arrows above point up and down. That is not th... Sep 22 2011, 10:02 PM draganc
The arrows above point up and down. That is not t... Sep 23 2011, 03:47 PM biggy72 I know the arrow always points toward the exhaust ... Sep 23 2011, 12:17 AM Dr Evil Yes, one would have to flip the pistons to point a... Sep 23 2011, 04:12 PM Series9 I'm looking forward to this answer.
I've ... Sep 23 2011, 06:22 PM Krieger On a map arrows point to North. On pistons they p... Sep 23 2011, 07:09 PM hot_shoe914 Well, I don't know about the arrows other than... Sep 24 2011, 07:03 AM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 31st October 2025 - 08:50 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.