Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Scratched cam bearing, can I run it?

Old 03-11-2017, 05:07 PM
  #1  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default Scratched cam bearing, can I run it?

Can I smooth this out and run it? Not sure, but I think I scratched it pulling the cam. Opinions?

If I can run it, do I smooth it with a green scotch bright? Or do I take my motor in and have them all replaced? Engine is already out of the car, but machine shops are 1.5 hours away.
Attached Thumbnails Scratched cam bearing, can I run it?-image1.jpg  

Last edited by BullyDawg; 03-11-2017 at 05:14 PM.
Old 03-11-2017, 05:55 PM
  #2  
TECH Enthusiast
iTrader: (2)
 
moekluse's Avatar
 
Join Date: Nov 2015
Location: Nc
Posts: 543
Likes: 0
Received 3 Likes on 3 Posts
Default

Replace them, it's not worth risking damaging the cam bore or camshaft. Just replace them
Old 03-12-2017, 09:30 PM
  #3  
TECH Addict
 
RockinWs6's Avatar
 
Join Date: Mar 2013
Posts: 2,628
Likes: 0
Received 27 Likes on 21 Posts
Default

Originally Posted by BullyDawg
Can I smooth this out and run it? Not sure, but I think I scratched it pulling the cam. Opinions?

If I can run it, do I smooth it with a green scotch bright? Or do I take my motor in and have them all replaced? Engine is already out of the car, but machine shops are 1.5 hours away.
Don't waste your time, those scratches are nothing. Trust me you don't want to get into cam bearings on these engine unless its absolutely necessary. I wouldn't touch them and end up doing real damage. Cam bearings are soft, those scratches won't do anything!
The following users liked this post:
SealyMike93 (03-15-2020)
Old 03-12-2017, 09:42 PM
  #4  
KCS
Moderator
iTrader: (20)
 
KCS's Avatar
 
Join Date: Mar 2005
Location: Conroe, TX
Posts: 8,848
Received 307 Likes on 207 Posts

Default

Originally Posted by RockinWs6
Don't waste your time, those scratches are nothing. Trust me you don't want to get into cam bearings on these engine unless its absolutely necessary. I wouldn't touch them and end up doing real damage. Cam bearings are soft, those scratches won't do anything!
For once, I agree with this guy.
The following users liked this post:
Dopeydinerdog (03-17-2023)
Old 03-12-2017, 10:08 PM
  #5  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default

I hit it with a scotchbright and smoothed it out, but my fingernail still catches. Still good to run?
Old 03-12-2017, 10:27 PM
  #6  
9 Second Club
iTrader: (13)
 
onebadbowtie86's Avatar
 
Join Date: Jul 2014
Location: Traverse City MI
Posts: 902
Received 62 Likes on 49 Posts
Default

The bearings soft so that wont hurt the cam, run it.
Old 03-12-2017, 10:36 PM
  #7  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default

Should I try to smooth it out some more? What about just replacing the front one? Just want to do what's best...
Old 03-12-2017, 10:41 PM
  #8  
9 Second Club
iTrader: (13)
 
onebadbowtie86's Avatar
 
Join Date: Jul 2014
Location: Traverse City MI
Posts: 902
Received 62 Likes on 49 Posts
Default

Just leave it be
Old 03-12-2017, 10:47 PM
  #9  
TECH Addict
 
RockinWs6's Avatar
 
Join Date: Mar 2013
Posts: 2,628
Likes: 0
Received 27 Likes on 21 Posts
Default

Originally Posted by BullyDawg
I hit it with a scotchbright and smoothed it out, but my fingernail still catches. Still good to run?
Let it be
Old 03-12-2017, 10:52 PM
  #10  
TECH Addict
 
RockinWs6's Avatar
 
Join Date: Mar 2013
Posts: 2,628
Likes: 0
Received 27 Likes on 21 Posts
Default

Originally Posted by KCS
For once, I agree with this guy.
hey no one agrees all the time
Old 03-13-2017, 08:03 AM
  #11  
12 Second Club
iTrader: (26)
 
ss4chad's Avatar
 
Join Date: Nov 2005
Location: Keller, TX
Posts: 688
Likes: 0
Received 2 Likes on 2 Posts

Default

Whisper words of wisdom, let it be!!

Chad
Old 03-13-2017, 08:16 AM
  #12  
On The Tree
 
5FOX3's Avatar
 
Join Date: Sep 2014
Posts: 138
Likes: 0
Received 0 Likes on 0 Posts
Default

If its a scratch that dosent have any more high points sense you smoothed it out itll be fine. The low area will just hold oil in that spot. But even so itll be fine. They soft
Old 03-13-2017, 10:58 AM
  #13  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default

What about the little gouge as well? Run it? Thanks guys... makes my concern go way down. I was a bit annoyed at first at the idea of having to take my engine in.
Old 03-13-2017, 11:53 AM
  #14  
TECH Enthusiast
iTrader: (2)
 
moekluse's Avatar
 
Join Date: Nov 2015
Location: Nc
Posts: 543
Likes: 0
Received 3 Likes on 3 Posts
Default

You can probably get away with it, but my ocd would never let me, I would hate to constantly have the thought of a scratched cam bearing in my motor with a small chance of chewing cam, I would go nuts
Old 03-13-2017, 06:04 PM
  #15  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 20,866
Received 3,017 Likes on 2,348 Posts
Default

The cam bearing itself will never chew the cam, as the cam is MUCH harder than the bearing. Having said that, there is a possibility of losing a small amount of oil pressure IF the scratch goes to the edge of the bearing and bleeds oil off before it can do its job. It would have to be a DEEP scratch to do that. Pure speculation, but a possibility.
Old 03-13-2017, 07:31 PM
  #16  
TECH Senior Member
iTrader: (25)
 
truckdoug's Avatar
 
Join Date: Nov 2013
Location: Portlandia
Posts: 6,330
Received 526 Likes on 356 Posts

Default

its all to easy for cam bearings to get put in wrong. run it.
Old 03-14-2017, 08:14 AM
  #17  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by G Atsma
The cam bearing itself will never chew the cam, as the cam is MUCH harder than the bearing. Having said that, there is a possibility of losing a small amount of oil pressure IF the scratch goes to the edge of the bearing and bleeds oil off before it can do its job. It would have to be a DEEP scratch to do that. Pure speculation, but a possibility.
It does go to the edge of the bearing. Should I just have a shop install new ones? I'm taking my heads in anyway.
Old 03-14-2017, 08:15 AM
  #18  
On The Tree
Thread Starter
iTrader: (1)
 
BullyDawg's Avatar
 
Join Date: Nov 2009
Location: Clovis, NM
Posts: 123
Likes: 0
Received 0 Likes on 0 Posts

Default

Bearings are in good shape other than this. Maybe 20k miles on them and no copper showing.
Old 03-14-2017, 08:31 AM
  #19  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 20,866
Received 3,017 Likes on 2,348 Posts
Default

I would say a light surface scratch would be of no consequence, but the call is ultimately yours. It is your peace of mind at stake here.
Old 03-14-2017, 09:12 PM
  #20  
TECH Addict
 
RockinWs6's Avatar
 
Join Date: Mar 2013
Posts: 2,628
Likes: 0
Received 27 Likes on 21 Posts
Default

Originally Posted by BullyDawg
It does go to the edge of the bearing. Should I just have a shop install new ones? I'm taking my heads in anyway.
Wow ask for advice then drag it out asking over and over and over



WHAT DON"T YOU UNDERSTAND ABOUT LET IT THE EFF BE?

My advice to you is DON"T ASK FOR ANY!
The following users liked this post:
Dopeydinerdog (03-17-2023)

Thread Tools
Search this Thread
Quick Reply: Scratched cam bearing, can I run it?



All times are GMT -5. The time now is 09:43 AM.