There's certainly some truth to that. With those hemis, for example, the idle had to be extremely rich to avoid tip-in stumble when you opened the butterfly valves of eight carburetor barrels that dumped into those giant ports. This caused a lot of unburned gas to mix with the oil. The situation was further complicated by the large combustion chambers which ran very cool at the edges. Again, lots of unburned fuel into the crankcase and, of course, lots of emissions. Oil contamination problems were solved in part by providing better lubricants. The contemporary version of Chrylser's hemi has much shallower aluminum combustion chambers. The valves and ports are still relatively large but the design is more efficient in terms of port configuration and modern electronics allow for much more precise control of fuel mixture.
> > mike wilson <[EMAIL PROTECTED]> wrote: > > > > >Rumour has it that this particular circle of producing more and more > > >powerful > > >models for sale to the public was directly responsible for the creation of > > >modern lubricants. It is alleged that, at one point, the engines were so > > >powerful that they were destroying themselves between service intervals > > >due > > >to the inadequate specifications of lubricants available at the time. > >
