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Any rotary engine guys in here?

Discussion in 'Off Topic Hot Rods & Customs' started by Roothawg, Oct 5, 2025.

  1. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,906

    Roothawg
    Member

    I grew up with a Mazda man for a dad.
    The list of Mazdas my family has owned between myself, my parents and my sisters.

    R100
    RX2
    RX3
    RX4
    RX7-3 of them
    MX6
    Millennia
    protege -4 of them
    Protege 5

    The first engine in my 36 Ford was a 12A with a 4 speed behind it. I have always thought the Wenkel design was ingenious.

    I have plan someday to install a 13B turbo engine into a model A roadster. I know there are more efficient power plant options out there, but I like em…..

    anyone else?
     
  2. Turns
    Joined: Jan 3, 2009
    Posts: 152

    Turns
    Member

    Yes I owned a couple of rotaries - both 12a and 13b powered

    Fun engines
     
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  3. Weedburner
    Joined: Nov 16, 2010
    Posts: 273

    Weedburner
    Member
    from Wa State

    Here's my first rotary powered car from back around 1995, a homemade dirt latemodel powered by a homemade 4 rotor! The engine was made by putting together a couple of 4 port 13B's...
    LM8l.jpeg

    LM8kd.jpg

    Here's a link to a page of mine with more info about the car... https://grannys.tripod.com/4rotor.html

    Grant
     
    Last edited: Oct 6, 2025 at 10:35 AM
  4. TexasHardcore
    Joined: May 30, 2003
    Posts: 5,596

    TexasHardcore
    Member
    from Austin-ish

    I had a base '86 RX-7 in high school, and later an '87 RX-7 Turbo II that I eventually sold to fund my first Model A in 2003. They were fun cars, and I always wanted to pick up another FC3S.
     
  5. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,906

    Roothawg
    Member

    I am floored at the cost of the rotary engines. When I was a kid you couldn’t give them away. The 12A’s had the notorious apex seal failures.
     
  6. TexasHardcore
    Joined: May 30, 2003
    Posts: 5,596

    TexasHardcore
    Member
    from Austin-ish

    Yeah, they cost a fortune nowadays, and if you told me back then how much a clean original FC3S would be worth today, I'd laugh in your face.

    My '86 had ECU problems. I had an import shop run all the diagnostics and they replaced the ECU. I sent the original ECU off to be repaired, the replacement failed 3 months later and then the original repaired one failed a couple of months after that when I was on my way home from working at the Ford dealer, and I was over it. I made a deal with a local used car dealer to take my dead RX-7 in on trade in exchange for a nice clean little Suzuki Swift GTi (think Geo Metro on steroids).

    My '87 Turbo II had some goodies... Street Ported, T04B Turbo, injectors, Haltech ECU, titanium exhaust, stout clutch, coilovers, etc. It was a project car and I was bouncing across Texas for work and never had time to dedicate to it.

    I sure miss the sounds and smells they made, and watching that tachometer keep climbing never got old!
     
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  7. twenty8
    Joined: Apr 8, 2021
    Posts: 3,599

    twenty8
    Member

    It is actually calle the "Wankel" engine, named after the inventor. Unfortunate name for sure......:rolleyes:
     
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  8. tractorguy
    Joined: Jan 5, 2008
    Posts: 1,037

    tractorguy
    Member

    Great memories.....in the late 1970's early 1980's I was living and working in the Des Moines area. Had a great friend and college buddy that bought a brand new RX7. We would run from Des Moines to Knoxville on Sat night for great dirt sprint car racing. Sometimes my friend would get a little over-served cheering for Doug Wolfgang. He would throw me the keys and let me drive home. I asked him about all the rules for driving a rotary. He told me "run thru each gear until the buzzer goes off......then shift "!!! Those were te good ole days
     
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  9. Zuffen
    Joined: May 3, 2013
    Posts: 245

    Zuffen
    Member
    from Sydney

    In 1971 I built an MGB with a 12A engine and transmission in it. Weighed 250lb less than a stock B and had MGA front springs to make up for it.

    Surprisingly fast when you add 60hp at the wheels to a car that only had around 60 to start with.
     
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  10. Phillips
    Joined: Oct 26, 2010
    Posts: 1,775

    Phillips
    ALLIANCE MEMBER

    Big fan. Put many many fun miles on a ‘79 Rx7, lots of revs and a ball on wet pavement. I’d love another rotary. Just don’t flood it!

    edit, I see you mentioned some non-rotary Mazdas as well, we have 2 M3s in the family, one MZR 2.5, one SkyActive 2.0, we love both of them. I’d like to MZR swap into a 60s compact.
     
    Last edited: Oct 6, 2025 at 8:26 PM
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  11. Harv
    Joined: Jan 16, 2008
    Posts: 1,447

    Harv
    Member
    from Sydney

    Grew up around them, but never owned one. Still a strong following in Australia, and often see a good RX2/3/4 turnout at the local Wednesday night drags.

    Redlines that would turn an SBC into a grenade. Sounds like a swarm of bees, man... angry, angry bees :cool::)

    Cheers,
    Harv
     
  12. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,906

    Roothawg
    Member

    I never actually got my spelling badge, no matter how hard I tried…
     
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  13. twenty8
    Joined: Apr 8, 2021
    Posts: 3,599

    twenty8
    Member

    Wasn't having a go at you about the spelling. Was more having a giggle about the guy's unfortunate name.:)
    Maybe you guys in the states should google "wank"........ or maybe you actually shouldn't.:eek:
     
  14. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,906

    Roothawg
    Member

    Oh……I got ya. Yeah, I won’t google that.
     
    twenty8 likes this.

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