 Engine sizing validation, 1.7 in a 2.0 case?! |
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| NickC809 |
 Sep 20 2026, 05:38 PM
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Newbie  Group: Members Posts: 2 Joined: 20-July 24 From: Grass Valley, CA Member No.: 28,250 Region Association: Northern California  |
I finally tore down the extra engine I had laying around and have been slightly befuddled and bemused by my findings. Based on some very rudimentary measurements it appears I have a stroke of roughly 66mm and my piston/jug diameter is 90mm. The heads are also stamped with 1.7 part numbers. Interestingly, my case is stamped with GA. This is my first type 4 tear down and I am looking for my findings to be validated as it seems absurd to de-stroke and de-displace a 2.0.
Find an album of my rough measurements here. Did I measure wrong? Am I a fool? All things are possible. https://photos.app.goo.gl/fV3hudrPNDsx4C9o7 |
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Posts in this topic
Shivers
I finally tore down the extra engine I had laying... Sep 20 2026, 06:14 PM
NickC809
Usually it is a W or EA 90x66 is a 1.7. I built ... Sep 20 2026, 06:39 PM Superhawk996
it seems absurd to de-stroke and de-displace a 2.... Sep 20 2026, 09:01 PM pfreiburger Boy, that is the truth. Tearing down the 1.7 and e... Sep 20 2026, 10:43 PM  |
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