hwcurtice
Well-Known Member
Okay, what does that mean? I hear it from time to time but it means nothing to a non-mechanic like myself.
It is fixable? How?
It is fixable? How?
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Help Support Hardline Crawlers :
Spun bearing?
- Thread starter hwcurtice
- Start date
Binder
Well-Known Member
In reference to a connecting rod bearing it means the bearing is worn to the point where the bearing comes loose and spins inside the rod journal. Usually one half of the bearing will spin and overlap the other half....The crankshaft journal is toast at this point and must be machined at the very least. You aren't fixing it with the crankshaft still in the vehicle......It can also mean a bearing race is spun inside a pressed fit orifice. Usually "spun bearing" is about the rod bearing though..
64FJ40
Well-Known Member
How dumbed-down do you want? 
The bearing has two halves, that fit into the connecting rod and the cap that bolts onto the end of the rod. If the bearing "spins", something isn't working right.
Quick GIS - you can see the two halves of the bearing and they're not in the correct orientation.
The bearing has two halves, that fit into the connecting rod and the cap that bolts onto the end of the rod. If the bearing "spins", something isn't working right.
Quick GIS - you can see the two halves of the bearing and they're not in the correct orientation.
Totalled
That Ford Guy
![IMG_0898[1].jpg](http://attachments.www.hardlinecrawlers.com/attachments/95/95770-3de7e8d657658ea42cf7bb8210a63259.jpg?hash=Pefo1ldljq)
hwcurtice
Well-Known Member
So it is fixable? You don't have to totaly tear the engine apart to fix?
And 'dumbed down' works just fine.
And 'dumbed down' works just fine.
crash2
-Oh no I picked a side-
It depends on what bearing.
With either a main or rod you need to get the crank turned.
If its a main most of the time the block is damaged and needs replaced. If its a rod then you will want the rod re sized.
With either a main or rod you need to get the crank turned.
If its a main most of the time the block is damaged and needs replaced. If its a rod then you will want the rod re sized.
Binder
Well-Known Member
Yes and yes.
hwcurtice
Well-Known Member
So, until you open it up, you can't really tell? That's what you're saying?
mmm I may rethink this possiblilty for a tow rig...
mmm I may rethink this possiblilty for a tow rig...
Binder
Well-Known Member
What are you trying to figure out?
Glenn
Well-Known Member
If the seller thinks it has a spun bearing, I would pass on that. You're paying someone shop rates to fix that and it will probably be spendy.
hwcurtice
Well-Known Member
I'm just trying to figure out if buying a heavy duty truck that might need a little engine work is worth it. Truck is only $1900, but in running condition sells for 3x that.
And asking about the Spun bearing term? A little education on my part, as well as that what the guy 'thinks' might be wrong with it.
This one of those things, I would take a trained mechanic with me to listen to it, if it runs, to determine where any rattle comes from. Mind you, this is a diesel, so rattle is part of the norm. I'm guessing, a bad bearing sounds a little different.
I wonder where I can find a good GM Diesel mechanic?
boardbysled
Tree Nerd.
The head clucker.
Glenn
Well-Known Member
Take it to a good shop regardless.
WHITE TRASH1
fruit stripe
Binder
Well-Known Member
The truck is probably "totaled" because it cost more to fix than what the truck is worth......
crash2
-Oh no I picked a side-
Could be an injector.
With the 6.2/6.5 its EXTREMELY hard to differ from a rod knock and an injector knock.
With the 6.2/6.5 its EXTREMELY hard to differ from a rod knock and an injector knock.
hwcurtice
Well-Known Member
Guys. thanks for your help. I just noticed the guy is copying the same ad over and over, with pictures off of a website.
Me thinks he's a scamming...
Yeah, all the pictures are from JLMB Government Liquidation website.
Me thinks he's a scamming...
Yeah, all the pictures are from JLMB Government Liquidation website.
