LT1/LT4 Tech 1993-1997

rocker noise possibly?

Thread Tools
 
Search this Thread
 
  #1  
Old 08-06-2010, 07:26 PM
mattzilla_22's Avatar
Newbie
Thread Starter
Join Date: May 2010
Location: mo
Posts: 14
Question rocker noise possibly?

i havnt been on the site for a bit but it seems that my rockers are making noise. i have an lt4 cam and some better springs but as of now im just using the stock rockers and pushrods. its def up top of heads it aint the header gaskets for sure. now beings i dont have the 1.6s would that be why. even with valve covers off and car ideling you can hear it coming from rite there. car runs pretty good other than the slight tapping from both heads. any help would be appreciated
 
  #2  
Old 08-06-2010, 07:32 PM
craby's Avatar
April 2011 ROTM
ROTM Winner's Club
Join Date: Mar 2009
Location: Tokeland, Washington
Posts: 21,753
Default

whats the oil pressure?
 
  #3  
Old 08-06-2010, 10:10 PM
mattzilla_22's Avatar
Newbie
Thread Starter
Join Date: May 2010
Location: mo
Posts: 14
Default

im wanting to say 80 driving 60 at idle but i may be wrong
 
  #4  
Old 08-06-2010, 10:31 PM
torque_is_good's Avatar
4th Gear Member
Join Date: Nov 2008
Location: under the hood
Posts: 2,614
Default

well, you could always adjust them. There are 2 methods. One is the "correct way" and the other is the good ole fashion way which is how i do it. Engine running, loosen until you get noise (if there isn't already noise) and then tighten until noise goes away and then 1/8 turn more
 
  #5  
Old 08-06-2010, 10:39 PM
mattzilla_22's Avatar
Newbie
Thread Starter
Join Date: May 2010
Location: mo
Posts: 14
Default

when i put motor together i adjusted them according to specs of chiltons and i went back today actually and readjusted them and still noise. now i have not tried to adjust while running didnt know if that would be legit some people say yes others no.
 
  #6  
Old 08-06-2010, 11:00 PM
craby's Avatar
April 2011 ROTM
ROTM Winner's Club
Join Date: Mar 2009
Location: Tokeland, Washington
Posts: 21,753
Default

i have always done the final setting with the car running. different lifters will call for different settings. the compcam 1.6 rockers called for 1/2 turn, my gm service manual calls for 1 full turn for my 93. my lifter supplyer told me 1 turn but when i mentioned what comcams recomended he agreed that would be the best way to go. so i have them set at 1/2 turn plus a nuge. the lifters on the car now are noisy but thats the way they are. can you track which lifter is making the noise or is it all of em.
 
  #7  
Old 08-07-2010, 01:00 AM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Default

Originally Posted by mattzilla_22
when i put motor together i adjusted them according to specs of chiltons and i went back today actually and readjusted them and still noise.
There's a good chance that's your problem right there. That method (TDC #1, adjust the 8 valves listed, rotate 180 and adjust the other 8) is fine, AS LONG AS you plan on following up with the "engine running" method. All that initial method is good for is to get the engine running, not running at it's best. I've experienced it more than once where after that initial adjustment, you can slowly rotate the engine and find loose valves again. It's not a good "set & run" method.
Here's the right way to do a static adjustment. It also shows what goes on with the cam geometry, and why it's so important to adjust the valves while each lifter is on the heel of the cam
(the "Chilton's way" doesn't give you that): http://www.centuryperformance.com/ad...h-spg-149.html
Here's another explanation: http://www.chevyhiperformance.com/te...nfo/index.html
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Showoff67
LT1/LT4 Tech
5
11-11-2011 01:35 PM
critt86
LT1/LT4 Tech
21
08-18-2010 11:17 PM
Ferg
LT1/LT4 Tech
13
10-08-2008 01:06 AM



Quick Reply: rocker noise possibly?



All times are GMT -5. The time now is 01:50 AM.