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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: 25,938

    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: 155

    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
  4. TexasHardcore
    Joined: May 30, 2003
    Posts: 5,608

    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: 25,938

    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: 5,608

    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,****anium 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: 3,616

    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: 1,044

    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: 249

    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: 1,780

    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
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  11. Harv
    Joined: Jan 16, 2008
    Posts: 1,458

    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: 25,938

    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: 3,616

    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: 25,938

    Roothawg
    Member

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

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