Hello everyone, I have ran into a problem. I just had a complete motor rebuild from the machine shop probably has under 6000 miles total since rebuild. I have done the valve lash adjustment 2 times one before first start up and one after this noise has started to develop. It has a quite loud tick knocking if you will coming from the head. I Have a video i took that you can better see what is going on its intermittent some times its quite louder than other times. I have stock valve springs and gsr cams. Any input would be great , thank you.

video here

 

And doesn't post the video. ಠ_ಠ

 

Does the sound change as the engine warms up? What lash specs are you using?

 

Intake valve lash .006 .007 exhaust .007 to .008 the noise is sometimes quiet other times a bit louder....could my rockers be out of spec? Im looking into all possible solutions. The video wouldnt load off my i phone but i will get it on here somehow. Someone said lma's but its a p72 gsr head couldnt be that.

 

Actually tonight as the motor had warmed up it decreased chattering quite a bit

 

I hate to bring up a dead thread like this but I’ve just had a forged rebuild completed and I have the exact same noise, what was it?

 

if you figure it out I have the exact same thing going on, p72 head on ls block figured before I rip it all down and freshen it up I should ask