loud motor = happy motor?

[Michael Kent]

While fiddling around with my ignition timing maps I've noted a
significant increase in the induction noise as I bring the timing up.
Over 3000r's, past the stock torque peak, the motor seems pretty
rattle-proof and I'm wondering if the timing is actually over advanced,
causing work to be done against the piston...

Timing at light load is up to 55 deg and WOT is no more than 40,
usually more like 34.

thanx,

MK