1.61 valves???

[Tiv]

Ok so I've pulled the heads and stripped them down and blow me the damn things got 2.02 inlets and 1.61 exhausts, yes I've checked that 3 times its 1.61!!

Anyone else come across these?

Ive got some 1.6 on their way to me, too late to change the order, not that I can find any 1.61 11/32 valves.... I was planning to replace them with new as a precaution not knowing its history

Those port holes are damned close together in that there head!
(furtively looking for cam to up a pic.... to follow)