Dave, the rp2585 piston was used by RPM repco replacement motors west heidelberg factory until 1992 in reconditioned blocks,the measurement from gudgeon pin to the top of piston on a rp2585 to a 2824141 is about 30thou different can only be used in a 9/2e block because of deck height.
cheers
Hello Anthony,
thank's for that.
This Video at the end, has Harry Firth and Ian in his 1970 Workshop,
with Ian testing what appears to be the same piston at post #14:-
https://www.youtube....h?v=HEcInDT7ufA