spun a bearing....whats it look like?

[4BangerV8Killer]

we pulled the motor took off the oil pan....now on a spun bearing what am i looking for?

 

[blackbyrd]

Well here's what mine looked like..
It's pretty noticable, if you have anything out of the norm, metal shavings..

 

[4BangerV8Killer]

HMMM.....thats wierd...ill look tomorow but nothing looked outa the norm and there were no metal shavings...did i pull this ***king motor for nothing?

 

[Mitsu RacerX]

ok here is a real easy way of checking all bearings while u have the pan off take out all plugs(spark). Now gently push each pistons/rod to see if it moves. If its does then that should be the bad bearing. If it moves to much you might have to mic the crank to see if its any good. Only bad thing about a bad rod bearing if it goes bad then you better change all of them. Go to the nearest autoparts store and ask for a feeler guage(little strips of plastic that you put in the bearing to see if ya need over size bearings.)

 

[boosted_91_tsi]

Mine was laying in the oil pan. (balance shaft bearing)...

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[hereitcomes]

I warped my #1 cylender and there was a horrible rod knock. Thats a really tell-tale sign that you have a rod bearing problem. If the oil pan is off, check for play in each one of the rods, and their movement on the shaft. There should be NONE!, but...depending on mileage they should wiggle Extremely small distances. If it actually moves back and forth. Its bad. I had about a 1/16 of an inch play in the one that I spun. It was real loud too knocking back and forth.

 

[force-fed]

I killed number 4 rod bearing driving with low oil level and high revs I guess. Drain the oil, unusual amount of metal particles would definitely be a warning signal. Mine wasn't as bad as those in the pics, it was just down to the yellow metal, didn't scratch the crank.

 

[nightspeed87]

what about if you spin a crank shaft bearing when your driving or something like that, will you know it? Will it knock like rod bearings? Because my 6bolt motor that I currently am going to be running in my car, we rebuild the wholething with completely new parts except the crankshaft because I ran out of money, and we took it to a machine shop and they had to machine out and micropolish the crankshaft because it had journal damage from a spun bearing or something like that in the past, and then they got it in operating spec, and then order specific over sized bearings for it, and i was kind of worried about the whole operation but I dont know. Some say I should worry and some think I should be ok as long as specs and clearances are ok...?

Normally bearing failure is from low oil pressure right? I have removed balance shafts so I know that greatly raises oil pressure
will this help defend against future oil pump/ bearing wear since there is more oil pressure in the engine?

 

[GVR4592]

Mine was laying in the oil pan. (balance shaft bearing)...

Was your dipstick bent?

 

[Defiant]

Normally bearing failure is from low oil pressure right? I have removed balance shafts so I know that greatly raises oil pressure
will this help defend against future oil pump/ bearing wear since there is more oil pressure in the engine?

Lubrication failure is what destroys bearings. Lost pressure in a corner, insufficient supply at high revs, or mechanical damage from out-of-spec tolerances or excessive G loads can all lead to bearing failure. And, damage that occured five years ago may only now have progressed to the point of failure. Mechanicals don't heal, they just start wearing incorrectly.
Oil pressure is only to pump cool oil in, and hot oil out of a plain bearing. Left to their own, they will hold oil until the oil heats to the point of failure. 10psi per 1000 rpm is all any engine needs.

 

[boosted_91_tsi]

Was your dipstick bent?

No, the dip stick never got bent. Lucky for me it happened as I was pulling into my driveway so it was near idle when it got thrown around in there.