When the turbo kids start pulling giant HP numbers, their biggest problem
     > seems to be that the rear housing warps a bit and the alignment dowels either
     > shear off or break the rear iron through the dowel hole area. They add a number
     > of additional dowel locations to help with that.
     >
     > All of the torque produced appears where ever the engine is being mounted to
     > the chassis. Usually the rear iron in a bulkhead mount, or the center iron
     > stock mounts. I would also suspect that crank index and stiffness would suffer as
     > the load is just on the flywheel end.
     > Porsche would put a clutch on both ends to keep the rotors and crank in index.

Paul, one of the things that everybody keeps ignoring on the Lemans engine is that
thick carbon fiber honeycomb plate that help stiffen the assembly and prevent twist.
I was thinking that a nice carbon fiber oil pan with a bent or radiused outside rail
would help prevent twist.
Bill Jepson

 
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