Mazda rotaries. Pre mix and octane reduction

[Kurt Heintz]

I personally would use the mechanical Mekuni dosing pump. Because with the
premix oil about 90% of the oil does not come where it is used. 
The oil is sputtered so finely by the injection nozzles that it burns with!

Best regards, Kurt Heintz
http://www.der-wankelmotor.de

Chris Wilson schrieb:
> 
> Speaking specifically of 3rd gen Mazda RX-7 rotary turbo engines with oil
> metering pump removed and an oil/petrol pre mix used for lubrication of
> rotors and seals, how does this affect octane? I had always believed oil
> contamination of the fuel reduced it's anti knock abilities, but
> carrying this to a logical conclusion 2 strokes using pre mix must
> really be hit by reduced octane when they run a high percentage of oil
> in the fuel? Or have I got this all round my head?
> 
> The real reason for my question is i want to run after market ECU on my
> 3rd Gen RX-7, and the stock ECU controls the oil metering. Some
> knowledgeable people say run the purely mechanical metering pump from an
> earlier engine, some say remove it altogether and run a pre mix
> oil/fuel like a basic 2 stroke. The car will mainly be used on road race
> tracks. Mixing fuel/oil is something I could live with.
> 
> Opinions? Thanks.
> 
> --
> Best regards,
>            Chris Wilson                          mailto:chris at formula3.freeserve.co.uk
>                                      http://www.formula3.freeserve.co.uk
> 
> ----------------------------------------------------------------------------
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org