The Optimax engines were more reliable than the ficht now marketed as
E-tec, mainly because the Optimaxes are not true direct injection.


Why is that the case? the optimax injects directly into the cylinder ?
And why does it make it more reliable?

P.S.

one of my theories about ETec vs 4stroke vs optimax is that the Etec
seems to be using slightly (5-15%) gas. Which may be because of its
"nosed" piston which helps efficiency at low rpm but not at high rpm.

Lets not even go into the BRP claims it is more efficient .. which are
measured at idle speed and true... But also at that rpm and fuel use
even 50% more would be irrelelvant.



Matt