John,

As I understan d it, high compression rotors makes no difference on the airflow. However, high compression rotors do make the engine more susceptible to detonation. That's why turbo users either have to be cautious about the amount of boost or take special steps to reduce detonation tendencies (e.g., intercoolers, water/alcohol injection, water spray bars, etc). Notice that Mazda's 2nd gen RX7s always had a slightly lower compression rotor on its turbo models.

Barry Gardner
Wheaton, IL

John Slade wrote:

>An Aussi company is making some modifications to the stock turbo which make it much better suited for

>our aircraft needs in my opinion. 

Ed,

Thanks for the ongoing education.

Max at ATS says my turbo is equivalent to a T04-V2 as in the attached map.

I, also, am trying to get my head around CFM, AR and Density Altitude so I can find the island, or at least stay on the map. :)

 

One thing I was wondering - does having high compression rotors change the airflow of the engine at a certain rpm?

John (turbo last seen in LA)

 

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