Spun Bearing Causes - Please Read!

[speedy25]

Interesting......

Some months back I hypothesized that in a spun bearing thread that a caved-in oil pan might be the problem. Also a suprise was the pics in that post that showed how close the clearance is, and then Ray filling in the final clue that the pick-up gets damaged enough to restrict oil flow. (Thanks Toni for posting that thread!)

I cant see how using the bottom of the pan to lift the engine while doing 60k service could ever crush the pan, but I CAN believe it could be possible using the pan to lift the car. But I'm betting the real culprit is curbs and other nasty things people run over that they shouldnt.

Heres to a giant reduction in engine failures from CAREFUL inspections of parts as they get bolted up!

-SP

[Mikes95RT]

My oil pan had a serious crease in it. It was like this for about 60K. I knew it was there but my oil pressure was amazing so I didn't care. When I finally decided to rebuild and found a broken ring land I paid extra attention to the bearings because of the crease in the pan.The bearings looked great for having 125K on the car.Once I looked at the screen I noticed that the crease had pushed the screen all the way in but it quickly fell away.Basically the restriction was a thin line through the center of the screen and the screen looked like a ^ with the restriction being the peak.So I guess it was smashed in but allowed enough flow to enter from the sides it was no problem.

Anyway with all of the cash I have spent for a full rebuild and balancing you can bet that I replaced the screen/pick up.I hope to hear her run this week.

[nawz8r]

I bought a '91 TT last September...checked the pan - dented, removed it and pounded it out. Thanks for the heads-up Ray, certainly makes sense as a cause!

[tomownzjoo]

Ive been hearing some things... im not trying to start an argument... about the oil pan is supposed to be creased a little inward ( NOT all the way dented in) because that rise in the oil pan pushes sludge to the sides assuring you get good clean oil in your sump.

EDIT: like i said im not saying this is true, but this does have some validity as ive heard it from a few people.

[DCIV]

Originally Posted by tomownzjoo

Ive been hearing some things... im not trying to start an argument... about the oil pan is supposed to be creased a little inward ( NOT all the way dented in) because that rise in the oil pan pushes sludge to the sides assuring you get good clean oil in your sump.

EDIT: like i said im not saying this is true, but this does have some validity as ive heard it from a few people.

its not true.


Coop

[Idaho]

Originally Posted by tomownzjoo

Ive been hearing some things... im not trying to start an argument... about the oil pan is supposed to be creased a little inward ( NOT all the way dented in) because that rise in the oil pan pushes sludge to the sides assuring you get good clean oil in your sump.

EDIT: like i said im not saying this is true, but this does have some validity as ive heard it from a few people.

wrong. there is a thin stamped circular crease in the pan that does go upward, but the sump itself lies lower, or at the bottom of the pan.

[SkortchGT]

Originally Posted by tomownzjoo

Ive been hearing some things... im not trying to start an argument... about the oil pan is supposed to be creased a little inward ( NOT all the way dented in) because that rise in the oil pan pushes sludge to the sides assuring you get good clean oil in your sump.

EDIT: like i said im not saying this is true, but this does have some validity as ive heard it from a few people.

Whoever you heard that from is a complete toolbag.

[3000gt1999]

Just found this thread.. and got me curious. So i went to the basement and reached under the car and sure enough, the center of the pan was dented in. Oil pressure is good so i'm not real worried, but will be fixing the pan before running it hard again.

[moffman93']

Originally Posted by ray pampena

hey moffman, didnt you dent your own oil pan working on your car behind the shop? lol

Thats because the jacks holding the car up sunk into the blacktop a solid inch and a half while the floor jack holding the engine up stayed up butting ALOT more stress on the pan then I intended to. I don't think its dented enough to touch the pickup you cant even tell its dented unless you look at it at an angle. Look in the back of steves shop, the marks are still there Either way when I do fix it, it will get a new pickup just incase. Im in no rush though, its been down for the last 4 months anyhow.

[DCIV]

rush now, pay later....


Coop