09-04-2020, 06:40 PM
Indeed. Although not all pistons are split skirt types, I'd hazard that if the maker marked the front with 'front' then it should be oriented.
Clearances I dare say will attract a variety of opinions and stubble-stroking. I have a note in my notebook that says 1.5 thou between a (new) piston and bore, measured at the BOTTOM of a split skirt piston (4 thou for plain) with a feeler gauge. Heaven knows where I noted that down from. I know for a fact that in the past I've run 6 thou at the bottom and 10 thou at the top - at that point I splashed out on a new set. For what it's worth my old Dad might have invested in new rings now and then but he very rarely bought new pistons to go with them!
Clearances I dare say will attract a variety of opinions and stubble-stroking. I have a note in my notebook that says 1.5 thou between a (new) piston and bore, measured at the BOTTOM of a split skirt piston (4 thou for plain) with a feeler gauge. Heaven knows where I noted that down from. I know for a fact that in the past I've run 6 thou at the bottom and 10 thou at the top - at that point I splashed out on a new set. For what it's worth my old Dad might have invested in new rings now and then but he very rarely bought new pistons to go with them!