I have heard that the L28 has "harmonic problems" at 7250 rpm. By the same token, I also know that the inline six is inherently balanced. Would it be possible to use a smaller stroke to increase the available RPM range? I see that the L28 has a 79mm stroke, whereas it's 74mm in the L24. For bore, there's (as far as I can tell) only a 1mm larger bore on the L28 motor than on the L24.
Would it be possible to reduce the stroke substantially, while increasing the bore substantially (either with sleeves, or just trusting the solid block the L28 is) to maintain near parity in displacement, while at the same time being much more suited to turbocharged performance (boost comes on at 3500? no problem! pull to
8500!).Thanks alex