spun bearing

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Feb 6, 2004 | 10:41 PM

jobberone

Thread Starter

jobberone

Joined: Aug 2003

Posts: 2,062

Likes: 8

From: Kailua Kona HI

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.

Feb 7, 2004 | 12:59 AM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,013

Likes: 9,775

From: Charlotte, NC (formerly Endicott, NY)

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

Feb 7, 2004 | 09:43 AM

jobberone

Thread Starter

jobberone

Joined: Aug 2003

Posts: 2,062

Likes: 8

From: Kailua Kona HI

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

Feb 7, 2004 | 10:18 AM

'97 C5

Pro

Joined: Mar 2002

Posts: 712

Likes: 0

From: Santa Clarita Ca

Re: spun bearing (jobberone)

Quote:

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

Feb 7, 2004 | 10:22 AM

TCW

Le Mans Master

Joined: Jan 2001

Posts: 6,439

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From: Maryville TN

St. Jude Donor '06-13,'16-'17, '19

Re: spun bearing ('97 C5)

Quote:

Absolutely, yes

:iagree: No question about it!

Tom :steering:

Feb 7, 2004 | 03:53 PM

jobberone

Thread Starter

jobberone

Joined: Aug 2003

Posts: 2,062

Likes: 8

From: Kailua Kona HI

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

Feb 7, 2004 | 04:47 PM

racetchr

Pro

Joined: Oct 2000

Posts: 545

Likes: 1

From: Charlotte NC

Re: spun bearing (jobberone)

Just had my engine rebuilt, and this machine work was $225 for mains.

Feb 8, 2004 | 06:32 PM

rodknock

Racer

Joined: Apr 2002

Posts: 272

Likes: 5

From: Canton Georgia

Re: spun bearing (racetchr)

without a doubt :iagree:

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Feb 8, 2004 | 06:35 PM

BlackZ06

Safety Car

Joined: Aug 2000

Posts: 4,933

Likes: 30

From: San Rafael CA

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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