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Three bearing crank....strange middle bearing issue

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Three bearing crank....strange middle bearing issue
A7novice Offline
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Joined: Sep 2017 Posts: 51 Threads: 19
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#1
11-04-2023, 05:26 PM
While removing pistons from crank shaft, I was surprised to find underneath the middle bearing housing an empty female threaded hole. I was expecting to find a copper pipe oil feed etc.
The engine has covered many miles in this state without any apparent problem (the reason for current strip down is a porous block).
Anyone any idea why the middle bearing  should have no oil supply.?
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Three bearing crank....strange middle bearing issue - by A7novice - 11-04-2023, 05:26 PM

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