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Old Feb 6, 2004 | 10:41 PM
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From: Kailua Kona HI
Default spun bearing
spun main. should block be line bored to try and prevent this from happening again. no known cause as no/low oil, overheat, overrev, yada.
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Old Feb 7, 2004 | 12:59 AM
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Default Re: spun bearing (jobberone)
How about a high G corner. Plenty of people have starved the bearings because they were taking a long high G corner and weren't running an extra quart of oil in the pan.
Bill
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Old Feb 7, 2004 | 09:43 AM
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From: Kailua Kona HI
Default Re: spun bearing (Bill Dearborn)
Hi, I'm not sure what caused the failure. Typically the crank "touches" an area on a bearing, there is heat build up due to friction, and the bearing fails. Of course if you run the engine without oil for whatever reason then the chance for failure goes up. The situation you describe is running it without oil special circumstance. My question is if you buy an engine with a known spun bearing failure should you line bore it on general principal? Thanks
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Old Feb 7, 2004 | 10:18 AM
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Default Re: spun bearing (jobberone)
My question is if you buy an engine with a known spun bearing failure should you line bore it on general principal? Thanks
Absolutely, yes
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Old Feb 7, 2004 | 10:22 AM
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Default Re: spun bearing ('97 C5)
Absolutely, yes
:iagree: No question about it!

Tom :steering:
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Old Feb 7, 2004 | 03:53 PM
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Default Re: spun bearing (TCW)
What are you guys paying to line bore a cast iron block with minimal machine work only to do that? Thanks
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Old Feb 7, 2004 | 04:47 PM
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Default Re: spun bearing (jobberone)
Just had my engine rebuilt, and this machine work was $225 for mains.
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Old Feb 8, 2004 | 06:32 PM
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Default Re: spun bearing (racetchr)
without a doubt :iagree:
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Old Feb 8, 2004 | 06:35 PM
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Default Re: spun bearing (jobberone)
Quote:

"What are you guys paying to line bore a cast iron block with minimal machine work only to do that?"

The LSx block is aluminum with iron sleeves for the cylinders.

Steve
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