Broke In Cam Now Popping Sound

[toofun]

Thanks for all of the info guys. I guess no matter what you read or think you know there is always alot more to learn. That is why I love working on these cars. I always learn something new all the time.(SOMETIMES THE HARD WAY UNFORTUNATELY LOL) I stripped off the covers, and loosened the lock nuts. On the valves that were completely closed I could see the lifter pushing the rod up as I loosened it so they definately were too tight. I usually pre soak the lifters in oil, then install them, put the rockers on and tighten it until I have no up and down movement, then I turn it another 1/2 turn.

But I always did this with the motor not warmed up. It has always been cold or a new rebuild. I guess like Bill said it is easy to have the lifter plunge down when it is new. I hear the lifters when new are in a NEUTRAL POSITION. So here is what I am going to do. I am going to retorq the heads, then install the rockers back on. I am going to take up the slack going up and down and turn the nut 1/8 of a turn. Then I am going to install the valve covers( I am buying new valve covers anyways so I am cutting the tops of these) Start the motor and after it warms up for about 10 minutes I am gonna adjust the valves while it is idleing. I know it can be messy but I am hoping with the valve covers on and just the nuts exposed it should eliminate a huge mess. This seems like the best way to go since with the engine running the lifters are pumped up so no false readings can throw me off.



Just hope I didnt damage anything during breaking in the cam. All of the pushrods are good. I pulled them out and table rolled them. Do you think I damaged anything?

Thanks
Mark
TOOFUN

[CAMAROBOY69]

Im glad my advice worked. This just happened to me so I was quite certain it was over tightened rocker arms like I said in post #5. If you have hydrolic lifters im sure you are fine. Probably no damage.