In a message dated 5/4/99, 9:51:47 AM, diy_efi at efi332.eng.ohio-state.edu writes: <<MOST 2 strokers use roller bearings, and some obscure 4 strokes - I believe a few high speed Euro motorcycle engines. A few OLD splash lubed engines also used them>> I think '50s Prsche high performance engine with the OHC used them (Carrera?).