cam journals

Thread Tools
 
Search this Thread
 
  #1  
Old 01-26-2007, 05:04 PM
buttz's Avatar
buttz
buttz is offline
Junior User
Thread Starter
Join Date: Mar 2006
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
cam journals

Im doing my head gaskets right now and the cam journals look pretty worn. theres 113k on it now and I bought it with 90. any ideas why they would be so bad so soon. Ive always had good oil pressure. thanks
 
  #2  
Old 01-27-2007, 03:19 AM
LxMan1's Avatar
LxMan1
LxMan1 is offline
Moderator

Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,436
Received 13 Likes on 13 Posts
What brand oil filter do you use? What weight oil? Most wear happens on start-up.
The cam rides directly on the head (which is aluminum) and is only protected by a thin layer of oil.
 
  #3  
Old 01-27-2007, 04:27 AM
Joe Finn's Avatar
Joe Finn
Joe Finn is offline
Elder User
Join Date: Oct 2003
Location: DC
Posts: 966
Likes: 0
Received 0 Likes on 0 Posts
LxMan, Are you saying there aren't any cam bearings?
 
  #4  
Old 01-27-2007, 08:19 AM
LxMan1's Avatar
LxMan1
LxMan1 is offline
Moderator

Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,436
Received 13 Likes on 13 Posts
Nope, not on these engines. Here's a pic of a 4.6L that ran out of oil for less than 90 sec while my niece pulled off of the road. (Oil pressure switch broke and pumped all of the oil into the street) It's a little blurry, but you can see the scarring and the aluminum the rolled over the oil feed hole.

What it should look like.

After no oil pressure.
 
  #5  
Old 01-27-2007, 09:56 AM
buttz's Avatar
buttz
buttz is offline
Junior User
Thread Starter
Join Date: Mar 2006
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
I use mobile 1 with a fram filter, but I hear its better to use a motorcraft?
 
  #6  
Old 01-27-2007, 04:03 PM
Joe Finn's Avatar
Joe Finn
Joe Finn is offline
Elder User
Join Date: Oct 2003
Location: DC
Posts: 966
Likes: 0
Received 0 Likes on 0 Posts
Thanks for posting those pictures LxMan. I never would have guessed no bearings.
 
  #7  
Old 01-27-2007, 07:06 PM
LxMan1's Avatar
LxMan1
LxMan1 is offline
Moderator

Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,436
Received 13 Likes on 13 Posts
Me either until I tore into this Cougar. It had a gaulled intake valve from the ordeal that caused no compression. That's when I saw that the head was shot.
 
  #8  
Old 01-28-2007, 11:02 AM
Johnny Langton's Avatar
Johnny Langton
Johnny Langton is offline
Postmaster
Join Date: Oct 2006
Location: SE Texas
Posts: 4,171
Likes: 0
Received 4 Likes on 4 Posts
Dover cylinder heads actually can repair heads like those,and has a cam bearing available for the head after the repair that can be replaced if damaged.They use a tri-metal type bearing like rod and main bearings.I know of a few performance guys that use them even if the heads are perfect-it's insurance against the heads being ruined after they've spent $2000-4000 in portwork and valvetrain if they have a failure of oil starvation issue.
JL
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jesse282
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
26
08-30-2017 10:51 PM
97vanswap
1997 - 2003 F150
1
01-14-2016 08:16 PM
Jeffrey Sutton
2004 - 2008 F150
3
05-10-2014 05:51 AM
m8cat
6.0L Power Stroke Diesel
10
02-19-2012 09:06 PM
Dr_j
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
5
05-03-2005 07:50 PM



Quick Reply: cam journals



All times are GMT -5. The time now is 08:30 PM.