My first Franken Cox

Bob,

the very first 3-piece pistons are discussed on Wikipedia, here:

https://en.wikipedia.org/wiki/Cox_model_engine#Pistons

Yours are old-stock, post 1957 pistons (but not the 3-piece unless they have a retainer clip inside) Later pistons did not have the balljoint cap swaged in the piston top, but machined from the piston body itself...this difference is visible on the smooth top of later pistons:



In addition, the oiling hole in the large end of the conrod was added on the 1st production runs of TD049-s. I have one NIB TD049 that has the oiling hole...COX abandoned the oiling hole in later conrods, maybe from mid 1960-s...the conrod material in these old engines is a kind of white metal, different from later conrods.


PS.: can someone explain to a non-native speaker what the adjective "franken" means? I was trying to look it up in concise English dictionaries but to no avail....