if you want more power and feel more power
from using slower burning petrol in your
10.7:1 compression ratio engine, then
make yourself happy..
different petrol outlets have different quality
petrols at the pump, some old or dirty or
moisture laden [esp ethanol blends],
some fresh, clean and unpolluted..
aside from octane, this could be
many riders including members here
have used and tried different octane
with no increase in power etc..
i have used 95RON= 91PON [USA]
and 98RON = 94PON [USA] in emergencies
and to avoid ethanol in 91RON [= 86PON]
over well known regular courses, with no
increase in performance etc..
altho, cbr250r and cbr300r both ran ok on
the slower burning ie, higher octane rated petrol..
these things have been tested and examined
by experts in engine design of both four
and two wheel vehicles engines..
with normally functioning engine
and normal clean petrol, the best for
our 10.7:1 compression ratio engine
is 91RON [about 86PON] petrol..
the potential problem for everyone
is pre-ignition [bad] which can lead to
serious engine damage..
higher compression ratio engines tend to
pre-ignite their compressed fuel gas
more readily than lower cr engines,
thus need slower burning petrol..
higher octane is slower burning..
lower octane is faster burning..
for our 10.7:1 cr faster burning petrol
ie, lower octane is 'better'..
faster burning fuel gas generates
a certain flame throw and shape,
which is a design element of
all modern engines..