Quote:

All aluminum top end here with a new lunati Hyd. cam and its fairly noisy in a 11:1 440. I started at 3/4 turn and now up to 1 1/2 turns on the crane golds and its a little quieter and runs perfect.

Most say its the combo of aluminum parts and aggressive cam....not worried about it.



I don't understand all this talk about the "number of turns"?
On a hydralic cam the lash should be set when the motor is new and cold with the intake off. There's only a small area on the heal of the cam where there is no lift, that's when you set your pre load on the lifters. Each valve will be different and require different amount of "turns"

With the intake off you can see the plunger in the lifter go down, but you got to make sure your on the heal of the cam. Set it once and your done forever on a hydralic cam.