07-11-2020, 09:01 AM
Availability of the " half" size shims could be an obstacle, 0,05 mm is the normal step size and 0,06 mm ( + or - 0,03 mm ) is the difference between in and out of tolerance, in other words the valve has to be 0,02 mm out of spec to bring it in just in spec for the other limit unless you have some 0,025 step shims which do enable you to set the valve back close to the center of spec. giving you 3 steps instead of one big one.
Presuming the tech has the ability to measure to 0,01 mm ( not easy )( and most gauges step 0.05 mm anyway ) instead of " in or out " of spec.
And looking at Joe's excellent spreadsheet ( thanks Joe ) that can last a lot of miles before the need to re-adjust the shims depending how you ride.
Not claiming that it is not a good idea but could mean a bit more work and out of spec is not immediately dangerous territory here, ( 2 and 4 x 0.05 mm steps away from zero when hot ) there is a bit of leeway depending.
Edit; never actually tried this but does the gap actually get smaller with a hot engine?
Presuming the tech has the ability to measure to 0,01 mm ( not easy )( and most gauges step 0.05 mm anyway ) instead of " in or out " of spec.
And looking at Joe's excellent spreadsheet ( thanks Joe ) that can last a lot of miles before the need to re-adjust the shims depending how you ride.
Not claiming that it is not a good idea but could mean a bit more work and out of spec is not immediately dangerous territory here, ( 2 and 4 x 0.05 mm steps away from zero when hot ) there is a bit of leeway depending.
Edit; never actually tried this but does the gap actually get smaller with a hot engine?