Sr20 cylinder head noise

[Elunicogaby]

Originally Posted by quickdiversion

The hydrolic lifters are notorious for going bad especially if you did not store them upright in oil when having them out of the head. In the manual pdf they show how to push in the center at the top and drain them while submerged in oil so they suck in oil fully. Sometimes this function can freeze and the lifter is completely dead.

Like mentioned above, pull the valve cover and wiggle the rockers to test which is loose.

Or solve all your issues and go solid lifters like I did.
I can send you the shim calculator that will tell you the size shim you need after you measure all the gaps with feeler gauges.

I did but I didn't notice anything wrong if you talking about wiggle them sideways they all wiggle and I did pump them in oil to get all the air out before I put them in. I'm not 100 % sure is the lifter but the bottom end is new with wiseco and eagle rods with ACL bearings and the crankshaft was measured and polished before install so I discard a spun bearing I been using the car like this it only sound about 2-2.5K rpm with little throttle almost none

[quickdiversion]

Its difficult for me to tell because I have had solid lifters so long.
But it sounds like it has a flat lifter. Which makes the rocket arm loose and rattle. Of you foot have rocket arm stoppers on it, I would put them on for safety till you figure it out so you don't throw a rocket arm if it is a lifter. You can get a set from Freddy for about $60.

Better to be safe than sorry. I run then with solid lifters fur the same reason. Safety.