 96 mm cylinder question, Difference between 1.7- 2.0? |
|
|
|
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. |
|
|
| Jgilliam914 |
 Feb 18 2025, 09:13 AM
Post
#1
|
|
914 Guru  Group: Members Posts: 5,370 Joined: 30-July 12 From: Iowa / Florida Member No.: 14,732 Region Association: Upper MidWest  |
I was digging through a storage tote and found a set of NPR 96mm pistons and cylinders.
Is there a difference between one that fits a 1.7 vs a 2.0? |
   |
 
|
  |
Replies
| Montreal914 |
Feb 19 2025, 03:04 PM
Post
#2
|
|
Senior Member Group: Members Posts: 1,910 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California 
|
2.0 rod has a smaller crank end diameter due to 2.0 crank being a 66mm crank with reduced journal to create the extra offset (stroke). Not sure I properly explained this… (IMG:style_emoticons/default/rolleyes.gif)
Edit: said differently… the 66mm crank has 55mm journal whereas the 71mm crank (2.0) has 50mm journal. The 5mm is machined offset on the 66mm crank to create the 71mm stroke. Therefore rods are different between 66 and 71, as mentioned in previous posts. |
|
|
|
Posts in this topic
Jgilliam914 96 mm cylinder question Feb 18 2025, 09:13 AM
brant Yes.
Wrist pin height as you have to use the rods... Feb 18 2025, 09:32 AM
ClayPerrine
Yes.
Wrist pin height as you have to use the rod... Feb 19 2025, 06:29 AM bdstone914
@[url=http://www.914world.com/bbs2/index.php?sh... Feb 19 2025, 07:09 AM ClayPerrine
@[url=http://www.914world.com/bbs2/index.php?s... Feb 19 2025, 08:08 AM brant well now I'm confused too....
the stroke on a... Feb 19 2025, 10:24 AM Artfrombama Are the rods between 1.7, 1.8, 2.0 different lengt... Feb 19 2025, 11:06 AM brant
Are the rods between 1.7, 1.8, 2.0 different leng... Feb 19 2025, 02:20 PM ClayPerrine
2.0 rod has a smaller crank end diameter due to 2... Feb 19 2025, 03:46 PM davep Said differently, the rods differ due to the size ... Feb 19 2025, 04:00 PM 914sgofast2 The 1.7 liter and 1.8 liter rods are the same leng... Feb 19 2025, 04:25 PM Front yard mechanic Nice can you build one for me Feb 19 2025, 06:50 PM Dave_Darling If you measure the rods end to end, they are the s... Feb 19 2025, 07:21 PM zig-n-zag I measured the wrist pin to the piston top for a 9... Feb 19 2025, 08:08 PM 914werke I measured the [u]wrist pin to the piston top for... Sep 15 2025, 12:53 PM 914werke Note:
the 96mm barrels (P&C kits?) that will... Sep 15 2025, 01:13 PM cgnj NPR slipper pistons were a thing in 80's and 9... Sep 15 2025, 01:31 PM Dave_Darling There were kits sold for 1.7s that did not require... Sep 15 2025, 02:49 PM |
|
Lo-Fi Version | Time is now: 15th September 2025 - 04:58 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.