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#8 Main Bearing O-ring
The earlier 911/930 used an O-ring for the #8 main bearing that was 50mm x 4.0mm. The newer 911/930, I think about 1984-86 and later used a #8 bearing O-ring that is 51mm x 4.5mm. I read on another thread that the newer #8 main bearing 51mm x 4.5 can be used on the earlier engines. Was there a change in the #8 main bearing O-ring groove dimensions or does the newer 51mm x 4.5mm O-ring just happen to fit in the same size O-ring groove that the 50mm x 4.0mm fit in the #8 main bearing? Usually O-ring groves are specifically sized to fit a specific O-ring.
Any experience with this issue? Rahl
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1976 930 turbo Carrera, "Ubich". Mostly stock, lightly sweetened. She’s an angry schwierigkeit. She doesn’t want flowers, she just wants to dance! And when she does, she shakes her hips to the rythem of the road. Drive her like you hate her! |
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05-25-2020, 08:46 PM
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Banned
Join Date: Apr 2020
Location: USA
Posts: 204
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The new 0 ring will work fine on both.
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05-26-2020, 09:58 AM
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1976 Porsche 930
