Valve clearance inspection results

[sixsracing]

There are too many variables to blame engine wear on any one thing. Certainly accelerated cam,lifter,shim wear can be attributed to poor maintenence on the oil side. Valve seat wear can be caused by poor fuel quality and incorrect valve clearances. IMHO opinion the DOHC argument is a little light. From my discussion with a lot of old timers, valve clearances got wider back when the heads were cast iron. The valve seats didn't show the propensity to work their way back into the head when the head was cast from a heavier more dense metal. Now that we have aluminum heads we see valve clearances getting tighter from the seats actually sinking into the softer metal. I was taught to always lean to the loose side for clearances, loose may give you some noise, if you get them too loose then you may effect drivability. Too tight and you can burn the valve, ruin the cam/seat and greatly accelerate valve train wear. As long as the valve is closing, compression should not be affected. Perk, your clearances seem to be very close and I to would be inclined to use them as a benchmark and check them in 30,000 to 60,000 miles unless you suspect an engine skip or detect a noise.