G'day Beckett
Just had a look in my Brooklands Book for 2/2a/3 Landies and it states the 2.6 litre valve clearances as
Inlet Valve:- .006 inch (.15mm)
Exhaust Valve:- .010 inch (.25mm)
I would suggest that you add an extra Thou or two to those settings for the higher temperatures in Australia, and extended milages
Hope that is of help
cheers
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68 2a GS 6028D 172-484
Aust No5 trailer 2wheel 1/2 ton Ch 1974=173-489
REMLR No 003