Jerry Hey wrote:

Paul,  I picked up this note on the RX-7 list.

As posted up on the RX-8 forum, Mazda moved the water seal groove back
from the side housings to the rotor housings for the RENESIS.

I sent an email off the the engineer I met at Laguna Seca for the RX-8
Launch asking why (we didn't notice it when the housings were infront of
us)

Here is his response:
--------------------
As you mentioned in your mail, water seal groove of RENESIS is in the
rotor housing.

Exhaust port is cooled by the water jacket surrounding the port.
Large exhaust port area is required to get high performance, and
some width of water jacket is necessary for casting production.
Moving the seal groove to rotor housing, we could get wider exhaust port
and water jacket.

That is the reason of changing the groove location.
--------------------

Jerry Hey

Tailwind & Rotary Engine Support

http://www.j-winddesigns.com

mailto:j-winddesigns@thegrid.net

 
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