Go Back  Offshoreonly.com > Technical > General Q & A
What are the symptoms of a spun bearing? >

What are the symptoms of a spun bearing?

Notices

What are the symptoms of a spun bearing?

Old 05-20-2006, 08:20 PM
  #1  
Registered
Thread Starter
 
klmken's Avatar
 
Join Date: Jun 2001
Location: Alexandria, VA
Posts: 616
Likes: 0
Received 0 Likes on 0 Posts
Default What are the symptoms of a spun bearing?

I found some silver snot in my first oil change and it wasn't iron/steel material. This was on a fresh 350 with 2-3 hours on the first oil change.
Ken
klmken is offline  
Old 05-20-2006, 09:10 PM
  #2  
Registered
 
GOODT's Avatar
 
Join Date: Apr 2005
Location: KENT ISLAND, MARYLAND
Posts: 2,675
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

what do you mean by fresh, new, rebuilt ?????

You should not see anything noticeable
GOODT is offline  
Old 05-20-2006, 09:19 PM
  #3  
Registered
Thread Starter
 
klmken's Avatar
 
Join Date: Jun 2001
Location: Alexandria, VA
Posts: 616
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

remanufactured GM marine long block. Would the silver snot be consistent with bearing material?
klmken is offline  
Old 05-20-2006, 09:50 PM
  #4  
Registered
 
GOODT's Avatar
 
Join Date: Apr 2005
Location: KENT ISLAND, MARYLAND
Posts: 2,675
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

could be rod and main bearings are made from several materials including zinc, brass, bronze, ect
GOODT is offline  
Old 05-20-2006, 11:25 PM
  #5  
Registered
 
ratman's Avatar
 
Join Date: Oct 2004
Location: medellin colombia, pablo escobar's lil town
Posts: 8,390
Likes: 0
Received 5 Likes on 3 Posts
Default Re: What are the symptoms of a spun bearing?

u may have wiped a cam lobe, does it run smoothly? do you hear any knocking?
ratman is offline  
Old 05-21-2006, 03:48 AM
  #6  
Registered
 
vandeano's Avatar
 
Join Date: Sep 2004
Location: Torrance, California
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

When you say re manufactured GM engine, are you saying the engine was rebuilt by GM? Or was this a straight out new marine engine. When I say straight out new I mean the block has never been rebuilt.
vandeano is offline  
Old 05-21-2006, 09:05 AM
  #7  
Registered
 
Superboat Guy's Avatar
 
Join Date: Jul 2004
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

some of the "cam lube" has moly in it and can make the oil look like metal flake
Superboat Guy is offline  
Old 05-21-2006, 09:35 AM
  #8  
Registered
 
Join Date: Feb 2002
Location: Honeoye, NY
Posts: 763
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

Re: What are the symptoms of a spun bearing? A drop in oil pressure, especially when thoroughly warmed up and at idle speeds after a hard run. --- Jer
jpclear is offline  
Old 05-21-2006, 11:52 AM
  #9  
Registered
 
GOODT's Avatar
 
Join Date: Apr 2005
Location: KENT ISLAND, MARYLAND
Posts: 2,675
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

if you spun a bearing youd know it trust me KNOCK KNOCK KNOCK KNOCK

AND YES DROP IN OIL PRESS
GOODT is offline  
Old 05-21-2006, 01:42 PM
  #10  
Registered
 
Join Date: Feb 2002
Location: Honeoye, NY
Posts: 763
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What are the symptoms of a spun bearing?

--------------------------------------------------------------------------------

"if you spun a bearing youd know it trust me KNOCK KNOCK KNOCK KNOCK" as Goodt states.
Yes, IF it is a rod bearing. But if it is a main bearing, you can still have "the silver/bronze death" and not hear a thing. --- Jer

Last edited by jpclear; 05-21-2006 at 01:46 PM.
jpclear is offline  

Quick Reply: What are the symptoms of a spun bearing?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.