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Peripheral porting, rotor housings & four rotors

Posted: Thu Apr 13, 2017 1:40 pm
by RB6102
I thought I'd post up some information and photos on my work so far for those who are interested.

My initial plan was to simply rebuild the 12A in my RX7 which had low compression but after tearing it down I found the usual problems with rotor housings that had such bad chrome flaking that they were no use at all. After a long process of research and investigation I eventually sourced two good housings (thanks Pete!) but along the way came up with a few ideas I wanted to try. Ultimately I have designed the parts and have started manufacture of a four rotor engine but I'm also working at various options for rotor housings seeing as they are so hard to come by.

First experiments with a weld-in exhaust port sleeve in RX8 housing:
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Re: Peripheral porting, rotor housings & four rotors

Posted: Thu Apr 13, 2017 3:42 pm
by DKWW2000
As usual Rob great work, a Quad Rotor W(p W(p W(p
NA, Blown, Injected or tipping jug?

Re: Peripheral porting, rotor housings & four rotors

Posted: Thu Apr 13, 2017 7:26 pm
by rip7
nice work, done with passion

Re: Peripheral porting, rotor housings & four rotors

Posted: Thu Apr 13, 2017 10:23 pm
by RB6102
RX8 housing machined to accept an aluminium slug, 3D Cnc contoured port blending from the usual mazda port shape at liner surface to round profile at header mount face. Still need to machine cooling jacket detail.
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Re: Peripheral porting, rotor housings & four rotors

Posted: Thu Apr 13, 2017 10:27 pm
by RB6102
Quad rotor will be NA and fuel injected - best throttle response and sound!

Re: Peripheral porting, rotor housings & four rotors

Posted: Thu May 24, 2018 8:00 am
by Scabs
Amazing! What are you putting it in? 😁

Jake