12-01-2020, 04:12 PM
Nice work Enzo, after looking at Wylyjoe's spreadsheet for some time here's what i THINK happens;
The valve parts are assembled in the middle of spec, and during the first 20.000 or so km's the parts surfaces wear in and get a polished finish, this takes material away from the parts and increases the clearance.
Over time the seats and valve surfaces wear away and reduce the clearances.
We may be chasing our tales trying to maintain the middle of the road values, since your values are on the wide side ( not the critical side, which is too small ) i would leave alone as Wylyjoe suggests and re-check in the next episode.
Have checked mine at 17.000 km and found nothing unusual so no adjustments were made, i am now at 44.000 km and can hear no valves making a noise, i'll check again at 50.000 or so.
This is just my version of what happens and i may well be wrong and welcome an experienced opinion here, just generally trying to understand how this works and be helpful.
The valve parts are assembled in the middle of spec, and during the first 20.000 or so km's the parts surfaces wear in and get a polished finish, this takes material away from the parts and increases the clearance.
Over time the seats and valve surfaces wear away and reduce the clearances.
We may be chasing our tales trying to maintain the middle of the road values, since your values are on the wide side ( not the critical side, which is too small ) i would leave alone as Wylyjoe suggests and re-check in the next episode.
Have checked mine at 17.000 km and found nothing unusual so no adjustments were made, i am now at 44.000 km and can hear no valves making a noise, i'll check again at 50.000 or so.
This is just my version of what happens and i may well be wrong and welcome an experienced opinion here, just generally trying to understand how this works and be helpful.