Valve Spring Pressure Loss After Break-In
I have my cam on order, and I have my recommended spring specs (145-150lbs & 350-360lbs). I have my springs chosen (“ISKY” 6105-SP) and now I am trying to dial in my installed height (on paper, as I will check my actual lifts after the cam install).
I was told by the cam company that the new valve springs may lose apx 10% of its pressure during the break-in procedure (I will be removing the inner springs). If so, do I just add 10% onto my recommended seat/nose pressures and match up the installed height? If so, my new pressure ranges are 159-165lbs & 385-396lbs before loss.
The three previous cams that I installed in this block, I just aimed for the recommended spring pressures and never considered the 10% loss detail. This time, I want to make sure before I start.
Thanks |
The key word here is "MAY". Not "will".
Break it in, reinstall the inners, and see what you've got. Chances are you won't have to dink around with them at all.