Go Back  Offshoreonly.com > Technical > General Q & A
noise under valve cover >

noise under valve cover

Notices

noise under valve cover

Thread Tools
 
Old 01-08-2015, 09:18 AM
  #11  
Registered
 
28Eliminator's Avatar
 
Join Date: Dec 2001
Location: Rapid City SD
Posts: 809
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Flying Tomato
found the problem
Please share what you found for our curiosity and other people looking for help to similar problems?
28Eliminator is offline  
Old 01-08-2015, 09:18 AM
  #12  
Registered
Thread Starter
 
Join Date: Jul 2010
Location: Seabrook, Tx
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default found the problem

The bar on the lifter became detached and then the roller lifter looks like it turned sideways on the cam. Chewed up the lobe. Hopefully, I caught it before any major damage has occurred.
Flying Tomato is offline  
Old 01-08-2015, 09:22 AM
  #13  
Registered
Thread Starter
 
Join Date: Jul 2010
Location: Seabrook, Tx
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default

If anyone was wondering, the retro fit roller lifters were made by Lunati.
Flying Tomato is offline  
Old 01-08-2015, 09:24 AM
  #14  
Registered
 
28Eliminator's Avatar
 
Join Date: Dec 2001
Location: Rapid City SD
Posts: 809
Likes: 0
Received 0 Likes on 0 Posts
Default

Well that would definitely cause your problem. You should be able to change cam & lifters, flush & clean out the pan by changing oil and filter. maybe even a couple of times with cheap oil and it should be ok as long as your oil pressure hasn't changed. However if you are pulling the motor, I would take it apart, hot tank it and start off fresh. Good luck with the repairs!
28Eliminator is offline  
Old 01-08-2015, 09:49 AM
  #15  
Registered
iTrader: (2)
 
Join Date: Aug 2011
Location: bel air, md
Posts: 2,733
Likes: 0
Received 6 Likes on 6 Posts
Default

Flying Tomato, what brand block are you running?
Black Baja is offline  
Old 01-08-2015, 09:50 AM
  #16  
Registered
 
28Eliminator's Avatar
 
Join Date: Dec 2001
Location: Rapid City SD
Posts: 809
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine is just the GM standard gen 6 block.
28Eliminator is offline  
Old 01-08-2015, 10:02 AM
  #17  
Registered
Thread Starter
 
Join Date: Jul 2010
Location: Seabrook, Tx
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default

It's a gm gen 5.

Originally Posted by Black Baja
Flying Tomato, what brand block are you running?
Flying Tomato is offline  
Old 01-08-2015, 10:14 AM
  #18  
Registered
iTrader: (5)
 
Join Date: Jul 2009
Location: Taunton Ma
Posts: 8,527
Received 698 Likes on 341 Posts
Default

The rocker arm wasn't loose?
Unlimited jd is offline  
Old 01-08-2015, 10:23 AM
  #19  
Registered
 
Join Date: Jan 2006
Location: taxachusetts
Posts: 3,093
Received 698 Likes on 352 Posts
Default

Originally Posted by lil red
The rocker arm wasn't loose?
lifter will soak up .040-.060" of lobe wear before it starts to loosen
sutphen 30 is offline  
Old 01-08-2015, 10:25 AM
  #20  
Registered
iTrader: (2)
 
Join Date: Aug 2011
Location: bel air, md
Posts: 2,733
Likes: 0
Received 6 Likes on 6 Posts
Default

I would check the lifter bore carefully with a pin gauge to make sure it didn't get out of round. If the lifter turned it had to create immense side loading. You may end up having to put a bushing in if this is the case. I wouldn't just throw a cam and lifters/ oil change in it and call it done make sure you check the bore.
Black Baja is offline  


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.