> Hi John
>
>  I have a turbo II 91 block (without the turbo) with a 2.17:1 PSRU.  My prop
> is a Performance Propeller 68"Dia 72" Pitch.  Max level flight rpm 6100 =
> 196MPH TAS.  Climb at 5300-5500 rpm ranges from 1100 -1600 fpm depending on
> density altitude and gross weight.
> I normally cruise at around 170 MPH TAS at 7.5 -8 GPH
>
> Ed Anderson
> RV-6A N494BW Rotary Powered
>
      Ed,

       What is your compression ratio? Are your rotors turbo II (9.0 to 1) or
  NA (9-7 to 1)?

      Kelly Troyer