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

reason for spuned bearings

Thread Tools
 
Search this Thread
 
Old 07-03-2007, 08:05 PM
  #1  
TECH Fanatic
Thread Starter
 
Thule's Avatar
 
Join Date: Jul 2006
Location: reykjavík, iceland
Posts: 1,843
Likes: 0
Received 0 Likes on 0 Posts

Default reason for spuned bearings

couple of months after i bougth my 31k milage 98 m6 camaro last summer it spuned a bearing,

i have heard a lot of reasons for why the early F bodys do that so much, but im curius about what is the real reason? if there is such thing as "offical reason" i have heard that the oil pump just doesnt handle it, that the bearings are just bad, and many other things,

when my car spuned bearing, hit had realy good oil pressure, enough oil, and i was just cruising at 60miles i 6 gear when it started knocking.. and this is an umolested car i bougth from an old man, i knew about 3 other 99-2000 F bodys in my neigborhood with spuned bearing at the time,
Old 07-03-2007, 10:40 PM
  #2  
12 Second Club
iTrader: (5)
 
FireSilverLullaby's Avatar
 
Join Date: Aug 2005
Location: Chesapeake,va and Charlotte,NC
Posts: 1,231
Likes: 0
Received 0 Likes on 0 Posts
Default

bump for ya, and are their any warning signs?
Old 07-03-2007, 10:43 PM
  #3  
TECH Fanatic
Thread Starter
 
Thule's Avatar
 
Join Date: Jul 2006
Location: reykjavík, iceland
Posts: 1,843
Likes: 0
Received 0 Likes on 0 Posts

Default

in my case there where not, i just happen out of nowhere..

i dont want this to happen agen.. so i bougth realy good bearings.. bolts and ported ls6 oil pump,

but thats the funny part, my car had fine oil pressure,
Old 07-03-2007, 11:21 PM
  #4  
TECH Addict
iTrader: (59)
 
Bo White's Avatar
 
Join Date: Oct 2004
Location: Vance, Alabama
Posts: 2,357
Likes: 0
Received 0 Likes on 0 Posts

Default

The only thing that hold bearings in place is the crush on the bearing, not the tangs on them that slip into the keyway when you put bearings in. You either lost oil pressure or lost the crush on the bearing(like a bolt or rod failure)...or possibly the bearing just started comin apart.
Old 07-04-2007, 12:30 AM
  #5  
TECH Fanatic
Thread Starter
 
Thule's Avatar
 
Join Date: Jul 2006
Location: reykjavík, iceland
Posts: 1,843
Likes: 0
Received 0 Likes on 0 Posts

Default

yeah i dont know what it was, when i teared down the motor.. the bearing was just.. gone, the oil pump works fine
Old 07-04-2007, 08:15 PM
  #6  
12 Second Club
iTrader: (5)
 
FireSilverLullaby's Avatar
 
Join Date: Aug 2005
Location: Chesapeake,va and Charlotte,NC
Posts: 1,231
Likes: 0
Received 0 Likes on 0 Posts
Default

Yeah when my oil pressure goes down around 30 the gauge starts fluttering, I was just hoping that it wasnt anything serious

Last edited by FireSilverLullaby; 07-04-2007 at 10:12 PM.
Old 07-05-2007, 09:14 AM
  #7  
TECH Senior Member
iTrader: (4)
 
GuitsBoy's Avatar
 
Join Date: Apr 2003
Location: Long Island, NY
Posts: 6,249
Received 3 Likes on 3 Posts

Default

Sometimes after some higher rpm, the oil pump pressure relief valve sticks open, dumping your oil back into the pan. This is a big problem when you come back down to low rpm and dont flow as much oil to begin with. Other than that, theres water in the oil, fuel in teh oil, low oil, stretched rod bolts, etc.
Old 07-05-2007, 09:24 AM
  #8  
TECH Senior Member
iTrader: (23)
 
brad8266's Avatar
 
Join Date: Aug 2005
Location: Watertown, NY
Posts: 8,797
Likes: 0
Received 0 Likes on 0 Posts
Default

I would say either stretched rod bolts, contaminated oil, or airating of the oil.
Old 07-05-2007, 09:35 AM
  #9  
12 Second Club
iTrader: (116)
 
BIG_MIKE2005's Avatar
 
Join Date: Jun 2005
Location: Skiatook, OK
Posts: 5,222
Received 1 Like on 1 Post

Default

Man thats sucks. My 99' has 101,000 miles on it & is quiet as ever. In fact it's about to recieve a nice H/C/I package in about 2 weeks.

My wifes cousin bought a 98' & it had less miles on it than mine. His motor went about a month after buying it. Pretty much same thing, was just cruising & it started knocking.




All times are GMT -5. The time now is 09:16 PM.