JOE K - thanks for the interesting information.
EVERYONE - the mechanic finally opened up our engine and discovered NON-A pistons in it, as well as cylinder liners i assume were put in to accommodate these pistons.
I did drive the A for a number of years with the said pistons installed, and thought the engine worked uhmm, ok i guess, for a car of this vintage. I dont have a point of comparison as there were probably only a hand ful of A`s in this country since the 1960`s. Now, the pistons and liners are still in good shape, but i do need new rings. Which brings me to ask if anyone recognizes the piston and rings in these two pics i will attempt to attach to my post. Hope someone does. Here goes...
PISTON.jpg
piston Ring.jpg