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Rod bearings.

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Old Oct 15, 2018, 03:06 AM
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Rod bearings.




Hey guys.
i have a stock 03 evo VIII, i was running it on 1.2 bar for 6 months and two weeks back #1 rod bearing went bad.
i had a rebuild with new crank and acl STD bearings and new oil pump.
on the first run the #1 rod bearing went again.
please guide me on what could be the reasons behind this.

pictures are attached.
Old Oct 15, 2018, 04:56 AM
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Was it the same rod?

Big end may be out of round, I would tend to say oil starvation, but I don't see much heat there.
Old Oct 15, 2018, 05:13 AM
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Welcome to EvOM

Understand you have a rod bearing issue but wonder if the block was "aline honed" / truing up the main bearing caps?

When the crank was installed, was there proper endplay recorded?

Last edited by MinusPrevious; Oct 15, 2018 at 06:50 AM.
Old Oct 15, 2018, 06:23 AM
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You need to check the block and girdle and make sure they are within spec.






Marios




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