smellie: I remember when Princess Auto was offering twinned 6-71 engines in their catalogue. I watched one of those big old Euclid crawlers with twinned 6-71's at a construction show a few years ago. Impressive, to say the least.
The two-cycle Jimmies couldn't have been much good, as they only made a few million, then quit. (sarcasm off).
The two-cycle Jimmies couldn't have been much good, as they only made a few million, then quit. (sarcasm off).