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Thread: OMC’s 4-Rotor Wankel Racing Engine - The Real Story

  1. #201
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    Quote Originally Posted by racer55 View Post
    I would like to thank John for all the info he has provided.

    I remember the Parker race very well, it was a sight to see them coming.

    Last time I was in Sturtavant a complet rotary was in the lobby, I lifted the cowl to make sure but I can't tell you if it was a newer version or not. I have some pictures of the lobby that may tell. I will have to dig them out.
    Racer: Are you sure it was in Sturtavant and not Waukegan? Is it a johnson or Evinrude? There is a Johnson in Waukegan in Marine Engineering and it is the old 2 piece crank engine. If you look closely it has a large flywheel nut and then a smaller nut on top of it. This was the nut that torqued the bolt that held the 2 cranks together. It also has the diecast flywheel. The newer versions had a flex plate flywheel. It appears to be a partial mockup as we never used black carbs, also the entrance of the carbs are not radiused and the steering arms were polished alum not black. Ken Finley has pictures of this unit on web shots
    Rotary John

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    John,

    It was in Sturtavant, I have not had a chance to look thru the pics but can tell you they were not to happy when I lifted the cowl. It was a Johnson (orange) and I think had aluminum color carbs but not 100 percent.

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    Quote Originally Posted by racer55 View Post
    John,

    It was in Sturtavant, I have not had a chance to look thru the pics but can tell you they were not to happy when I lifted the cowl. It was a Johnson (orange) and I think had aluminum color carbs but not 100 percent.
    This just about makes my day! This just might be the 5th engine I have been searching for. Unless this is the same one thats now in Waukegan. I sure would like to see your pictures!!!! Thanks for all your help.

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    Default Rotary images

    All this talk of the rotary engines sent me digging.... Found a color photo or two from the Detroit boat show in 1974 or 1975. There's also a B&W of a CC (year unknown). Soon as I get decent scans will post for all to see. At that time I was wrenching Mercs and OMC's at Byrd Marine in Dearborn, MI and racing 25SSMH with an OMC 25 powerhead and Parker stacks on a Merc 20H tower/gearcase. We worked the show where I'd slip away to the manufacturers booths and marvel at these great beasts. Cool thread!

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    Default From the archives

    If only we could turn back the hands of time!
    Attached Images Attached Images    

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    Quote Originally Posted by Tim Kurcz View Post
    If only we could turn back the hands of time!
    Tim:
    Thanks for the pictures. I don't believe I've ever seen these 2 before. This appears to be the earlier engine as it has the snowmobile flywheel on it. If I have the story right, BRP marketing still has 1 each Evinrude and Johnson stashed away in an offsite wearhouse somewhere.

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    Default OMC stash

    You're welcome, John.

    Back in the day, I was happy to drive a new Merc 25SS. Monsters like the Rotary and CC were but wet dreams for lowly stock outboard racers. You'd like to believe BRP kept a few of these treasures. Let's hope they'll be available for public viewing again someday.

    Tim

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    Does anyone remember the outrigger type 4 point hydro with the Mod 50 motor on it at the Chicago Boat Show. Any idea what happened to it?
    Mark N

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    John, there is a writer for a Canadian snowmobile magazine that was very interested in what you posted regarding the rotaries for snowmobiles. He is writing an article on the rotaries and wanted to ask you some questions, and thought maybe I knew how to contact you. Since I couldn't find an email, if you want to get ahold of him, send me a pm and I will give you his contact info.



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    Wayne:

    FYI I tried to send you a PM last evening about the Marshall Grant motor that you replied to, just in case you did not see the post, It said your PM box was full and would accept no more messages till you emptied it of some of them. Might want to check if you want to hear from this person.

    Bill

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