 96 mm cylinder question, Difference between 1.7- 2.0? |
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| Jgilliam914 |
 Feb 18 2025, 09:13 AM
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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? |
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| brant |
Feb 18 2025, 09:32 AM
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914 Wizard Group: Members Posts: 12,055 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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Yes.
Wrist pin height as you have to use the rods for 2.0/1.7 |
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| ClayPerrine |
Feb 19 2025, 06:29 AM
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#3
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Life's been good to me so far..... Group: Admin Posts: 16,517 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(brant @ Feb 18 2025, 09:32 AM)  Yes. Wrist pin height as you have to use the rods for 2.0/1.7 Brant... Why do you say that? I ran a 1.8 crank and rods with 2.0 pistons and cylinders for years. Is there something I don't know and got seriously lucky? |
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| bdstone914 |
Feb 19 2025, 07:09 AM
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bdstone914 Group: Members Posts: 5,118 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE QUOTE(brant @ Feb 18 2025, 09:32 AM) Yes. Wrist pin height as you have to use the rods for 2.0/1.7 @Brant Why do you say that? I ran a 1.8 crank and rods with 2.0 pistons and cylinders for years. Is there something I don't know and got seriously lucky? interesting. the 2.0 crank was made by offsetting the rod journal. I believe the wrist pin height is different between the 1.8 and 2.0 pistons. Could it be that the 2.0 pistons on 2.8 rods positioned the piston correctly? Clay, Do you remember if you shimmed the barrels and what deck height you ran? (IMG:style_emoticons/default/popcorn[1].gif) |
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| ClayPerrine |
Feb 19 2025, 08:08 AM
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Life's been good to me so far..... Group: Admin Posts: 16,517 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(bdstone914 @ Feb 19 2025, 07:09 AM) QUOTE QUOTE(brant @ Feb 18 2025, 09:32 AM) Yes. Wrist pin height as you have to use the rods for 2.0/1.7 @Brant Why do you say that? I ran a 1.8 crank and rods with 2.0 pistons and cylinders for years. Is there something I don't know and got seriously lucky? interesting. the 2.0 crank was made by offsetting the rod journal. I believe the wrist pin height is different between the 1.8 and 2.0 pistons. Could it be that the 2.0 pistons on 2.8 rods positioned the piston correctly? Clay, Do you remember if you shimmed the barrels and what deck height you ran? (IMG:style_emoticons/default/popcorn[1].gif) I did not have to shim the cylinders. It has been a long time since I built it, so I don't remember the deck height measurement. But I never had a problem with any interference between the pistons and the head. |
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Posts in this topic
Jgilliam914 96 mm cylinder question Feb 18 2025, 09:13 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 Montreal914 2.0 rod has a smaller crank end diameter due to 2.... Feb 19 2025, 03:04 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 |
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