Thanks for that !
I pressume the converted -3C engines also got the new fan nacelle?
Ok, so which type were those noisy, smokey jet engines one sees in early DC8 & 707 pics? Was the -3C jet a later cleaner version of the launch engine?
Quite right the Brits do use the term by-pass, it was P&W who introduced the 'fan' adjective for the -3D .