1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rotor housing condition

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Old 08-20-09, 03:59 PM
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Rotor housing condition

I have included a bunch of pictures to get some opinions on whether or not these housings would be worth a street port and rebuild. Thanks ahead of time.
I can get more pics if needed.








Old 08-20-09, 05:13 PM
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The flaking and the deep groove around the far side of the seal surface, to me, says "say goodnight, Irene."
Old 08-20-09, 05:28 PM
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Ya both have those groove all but one side seal was gone in both housings. Well its not a loss for me really got my money out of the car. I'm thinking about donating them to my local high school auto shop so more people can get a better understanding of the beautiful Wankel.
Old 08-20-09, 06:59 PM
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Yes you can use them. Generally you do not want more than 2mm of flaking on the chrome housings. Also with the groove, just flip the apex around.

Don't expect the engine to make it to 150k though.

EDIT: Only thing that scares me is the coolant seal corrosion. I will try to remember the measurements in a few on how far is too far. I would definitely clean those though.
Old 08-20-09, 08:47 PM
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there fine...and they are re-usable...i can get those rotors ******* clean bro...and those housings!!!yous wouldnt even think they were the same ones...
Old 08-20-09, 10:20 PM
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that looks more worn then 2mm when you run your finger on the housings can ya feel little lumps?
Old 08-20-09, 11:30 PM
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No they are smooth. And the apex seals look good also. only bad thing is 4 out of 6 side seals where gone. Only problems with engine before I pulled it was high idle(carb problem) and it leaked oil, And it had a coolant leak. Here's the apex seals from the two rotors.

Old 08-20-09, 11:52 PM
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i've seen worse rotor housings used. assuming you can get the rust scale off and there's no risk of the seal groove being over-eaten then i'd say use them.

the rotors---- i'd have to see them clean and i don't like rust on them. soak them in castrol super clean for 15 minutes, then hit em with the wire brush/

get all new seals, it's worth it.
Old 08-21-09, 12:18 AM
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Only thing is I have no use for them right now(knock on wood).
Old 08-21-09, 12:25 AM
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I agree with drivefast 7. Now is the time to rebuild the thing. Burn a hole in your wallet and get yourself the atkins master rebuild kit. It'll hurt of front, but you'll be happy you did. Just beware the side seals do need to be trimmed.
Old 08-21-09, 12:54 AM
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But then i would just have a rebuilt motor sitting around with no use for it.
Old 08-21-09, 01:08 AM
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Well if you have no use for them, then what's your price on them?
Old 08-21-09, 01:14 AM
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Price stands at $40 each(as is) plus shipping. But these housing do have 194000 on them I believe. May have been rebuilt. Any other inquiries pm me. Don't want to over crowd the thread.

Last edited by Crazyk82; 08-21-09 at 01:18 AM.
Old 08-21-09, 01:28 AM
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Originally Posted by Crazyk82
Price stands at $40 each(as is) plus shipping. But these housing do have 194000 on them I believe. May have been rebuilt. Any other inquiries pm me. Don't want to over crowd the thread.
Measure the chrome flaking from the furthest part in and we will talk
Old 08-21-09, 01:42 AM
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Will do tomorrow. And I shall take more pictures.
Old 08-21-09, 10:53 PM
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Rear rotor housing.









Old 08-21-09, 10:56 PM
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Front rotor housing.










Old 08-21-09, 11:01 PM
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was it running when you tore it down? it looks bad, I have some in better condition that I plan on learning the ins/outs or porting on. It looks like the OMP wasnt working right lots of carbon and scoreched oil. good luck man
Old 08-21-09, 11:45 PM
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wheres the water goin?

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are those chatter marks on the housing
Old 08-22-09, 11:59 AM
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Ya it ran before I pulled it apart.
Old 08-22-09, 07:11 PM
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wheres the water goin?

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well the chatter marks are from over reving w/o out supporting mods
Old 09-02-09, 04:09 PM
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Well I recently took a class in college and my old Auto teacher was my instructor. I told him about my Rx7 and He said he always loved those cars. Well when I told him I bought a parts car to do a tranny swap in mine he immediately asked if he could have the motor as a demonstration tool. Well I gave it some thought and I decided I would make him a "cutaway" and donate most of the engine parts to further more people on the knowledge of a rotatory. This man has always helped me in the past so I thought I would give back to him and the school. Ill take some pic when Im done making a "stand" and everything for it.
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