Peripheral porting, rotor housings & four rotors

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RB6102
Posts: 36
Joined: Tue Mar 15, 2016 8:19 pm

Peripheral porting, rotor housings & four rotors

Post by RB6102 » Thu Apr 13, 2017 1:40 pm

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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DKWW2000
Posts: 1161
Joined: Sun Jul 06, 2014 10:16 pm
Location: English Riviera - South Devon

Re: Peripheral porting, rotor housings & four rotors

Post by DKWW2000 » Thu Apr 13, 2017 3:42 pm

As usual Rob great work, a Quad Rotor W(p W(p W(p
NA, Blown, Injected or tipping jug?
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

rip7
Posts: 133
Joined: Thu Aug 18, 2011 8:37 pm
Location: essex

Re: Peripheral porting, rotor housings & four rotors

Post by rip7 » Thu Apr 13, 2017 7:26 pm

nice work, done with passion

RB6102
Posts: 36
Joined: Tue Mar 15, 2016 8:19 pm

Re: Peripheral porting, rotor housings & four rotors

Post by RB6102 » Thu Apr 13, 2017 10:23 pm

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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RB6102
Posts: 36
Joined: Tue Mar 15, 2016 8:19 pm

Re: Peripheral porting, rotor housings & four rotors

Post by RB6102 » Thu Apr 13, 2017 10:27 pm

Quad rotor will be NA and fuel injected - best throttle response and sound!

Scabs
Posts: 42
Joined: Fri Apr 13, 2018 4:18 pm

Re: Peripheral porting, rotor housings & four rotors

Post by Scabs » Thu May 24, 2018 8:00 am

Amazing! What are you putting it in? 😁

Jake

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