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morghen
Joined: 21 Jan 2005
Posts: 8883
Location: Romania
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 Posted: Wed Nov 01, 2023 5:48 pm Post subject: |
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No words, just grateful you share this with us.
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barnwerks
Joined: 28 Oct 2022
Posts: 21
Location: Northeast and southeast US
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| Posted: Wed Nov 01, 2023 11:28 pm Post subject: |
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Good Lord!
It's going to take me a month just to study the photos from one post.
Amazing! |
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Mike9311
Joined: 14 Dec 2004
Posts: 1678
Location: Chicago-ish
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| Posted: Thu Nov 02, 2023 2:15 am Post subject: |
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Britain, you know what you are really good at? Embarrassing the rest of us but I mean that in the best of ways...wow wow wow
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
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Raize
Joined: 18 Sep 2013
Posts: 184
Location: Scotland
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| Posted: Fri Nov 03, 2023 6:48 am Post subject: |
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| Why do you think the oil pump gear failed? |
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Britain
Joined: 26 Nov 2013
Posts: 285
Location: Cornelius, OR
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| Posted: Fri Nov 03, 2023 7:23 am Post subject: |
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| Raize wrote: | | Why do you think the oil pump gear failed? |
Hard to say. The harmonic balance failed as well...which I think came first. Also the fast that these parts are pushing 30 years old. There is a guy making billet gears as drop-in replacements.
-Britain |
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Raize
Joined: 18 Sep 2013
Posts: 184
Location: Scotland
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| Posted: Fri Nov 03, 2023 7:46 am Post subject: |
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| Britain wrote: | | Raize wrote: | | Why do you think the oil pump gear failed? |
Hard to say. The harmonic balance failed as well...which I think came first. Also the fast that these parts are pushing 30 years old. There is a guy making billet gears as drop-in replacements.
-Britain |
I think the "parts are old" is not really a good explanation. All these things are protected by oil film so really it's either a degradation in the oil quality or a thermal expansion due to overheating that messed up the tolerances?
Just practicing my engineering here, not being prescriptive!
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Cedric
Joined: 27 Aug 2004
Posts: 2610
Location: Sweden
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| Posted: Fri Nov 03, 2023 7:10 pm Post subject: |
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| Britain wrote: | | Raize wrote: | | Why do you think the oil pump gear failed? |
Hard to say. The harmonic balance failed as well...which I think came first. Also the fast that these parts are pushing 30 years old. There is a guy making billet gears as drop-in replacements.
-Britain |
If the harmonic balancer went first it could be an explenation. Torsional harmonics can be really brutal, especially on gears.
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