read this in a magazine a while back, they called it your "cylinder index"...lol.
my truck---------8
wife's------------6
motorhome-------8
chevette #1-----4
chevette #2-----4
boat-------------4
tractor----------4
summit----------2
expedition-------2
citation #1------2
citation #2------2
lawn tractor-----2
garden tractor---2
onan gen set----2
15hp merc------2
crf450-----------1
crf230-----------1
yz250-----------1
gt80-------------1
crf50------------1
atc 70----------1
atc 70 #2-------1
ds90------------1
400 outlander----1
pocket bike #1---1
pocket bike #2---1
honda gen set---1
push mower------1
push mower #2---1
ice auger--------1
weed eater-------1
chainsaw--------1
71 that I can think of.....maybe I have a problem