Dommie pistons

If they have no valve recesses I don't think it matters if they are new. If used best to mark them to put back in the same place .

My bike has pistons Hepolite originally fitted to a 1956 Model 88 (They wore out the original bores but were almost entirely without wear on the pistons, some light scoring on the skirts). They definitely have a front and back, they are stamped to say so. The inlet valve pockets are bigger.

Paul

Previously paul_standeven wrote:

My bike has pistons Hepolite originally fitted to a 1956 Model 88 (They wore out the original bores but were almost entirely without wear on the pistons, some light scoring on the skirts). They definitely have a front and back, they are stamped to say so. The inlet valve pockets are bigger.

Paul

Hello well BHB piston where the originals or helioplex the Hepolite company bought both of them out , and there where made in Bradford not far from the David Brown factory that made gears tractors And Sports cars yours anna j