picked up a small batch of piston and rings at bendigo swapmeet,have ID all but two pistons
was hoping the brains trust could help me out
one is 70mm
18mm pin
23mm top of pin to top of piston
shallow arch inlet 8mm
marks inside art 3 H 9519
the other is
70.5mm
full skirt
18mm pin
23mm top of pin to top of piston
blue paint dot on crown
marks inside art H 1/2
so cr/mt 250?
?
any help much appreciated
tony