Quote:
Originally Posted by bradleyland
I wouldn't count on it being a 2.5L I4. In order to stay in business, BMW has to adapt to the current engineering and economic environment. All their competitors use modular engine design in order to reduce costs. In order to compete, BMW must use the same. This is the reason the S55 is less bespoke than the S65/S85.
Both the N20 and the N55/S55 use a 500cc per-cylinder modular engine design. More importantly, they both share an 84mm bore. Someone more technical would have to chime in to let us know if they can go larger on the bore than that without materials issues. I wouldn't think they'd increase the stroke too much in order to avoid the need for changes to piston/rod/crank designs.
This is all conjecture, of course, but in terms of likelihood, we can look to the current trends to infer the future outcome.
|
Doesnt mean you can't leep the same bore and change the stroke with a new, lightened crankshaft and different pistons.. S20.. S22.. or S25....
