The inserts look like stainless steel or Inconel.
Jim Mederer tells me the exhaust runs on the average 150 degrees F
cooler as he has an RX8 engine on the dyno already.

Paul Lamar

Paul why do they use the inserts?
Royce

Good question. My guess is the exhaust would erode cast iron.

Paul Lamar

-david mccandless wrote:

Would the insert be to stop the exhaust from one rotor impinging on the
side of the opposite rotor? Old flathead V8s had this in the center
exhaust port 50 years ago. DMcC

Yes it would in the center but that does not explain the end housing inserts.

Paul Lamar
 
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