saviour stivala wrote: ↑
Wed Jun 05, 2019 5:32 pm
... but I am always keen if at all possible to make the power at lower rpm, that is more beneficial, it is more efficient”.
an "eyeopener" statement from mario illien regarding our bore/stroke discussion !
like discussed i bet he "fooled" other teams espacially in 1998 - 1999 with a basicly to low b/s ratio to achieve comperative top end rpm,s and max power output for that time .
with the bigger stroke he achieved better midrange BMEP and so better midrange torque than e.g ferrari . using be-al liners and pistons he was nevertheless able to go the same max rpm,s like ferrari and so he had both : superior midrange torque and very good top end power !
i bet ferrari wondered in 1998 that he obviously goes a higher stroke but is simultany able to rev as high as they do - how the hack does he do it ?
i assume after some time ferrari started to smell the berrylium pistons as the anwer how he is able to manage the by terms of classic materials destructive piston acclerations with his higher stroke and used their influence to make fia ban this material.
if be-al would stay allowed ferrari was at risk to bet on a dead horse with their very high b/s ratio for top end power and trading a bit of midrange torque .
with the ban of be-al and a still lower b/s ratio ilmor in 2001 had an engine with still superior midrange bmep but he had now to pay the full price of lower max rpm,s and lower top end power.
thats why the 2001 engine has probably no more horses than the 1998 one i guess.
very interesting story i think !