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Anyone ever put a Rotary in a miata?

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Old 09-26-01, 07:41 PM
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Anyone ever put a Rotary in a miata?

I was thinking. That piece of crap is so light, and with a 13b (maybe even a 13b turbo) it would be pretty fast cause its a light bitch car.
Anyone know of any conversions. I searched yahoo a bit and didnt find too much. Would it fit? And what about the transmissions. I would think a miata would be FWD.
Old 09-26-01, 07:45 PM
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Just found http://www.realbig.com/miata/miata/1994-10/604.html
Are there any cars that 13B's or 20B's go into relatively easy.
Old 09-26-01, 10:01 PM
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Try http://brfoundation.com/RX-7/rampagemiata1.htm .
Old 09-26-01, 10:03 PM
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You can drop a 20B into a 2nd gen RX-7 pretty easily. I've also seen it done in a 1st gen. I also saw somebody put a 20B in a 5 series BMW.
Old 09-26-01, 10:20 PM
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Originally posted by 13BAce
You can drop a 20B into a 2nd gen RX-7 pretty easily. I've also seen it done in a 1st gen. I also saw somebody put a 20B in a 5 series BMW.
wow that's cool!..a 20B 5 series Bimmer. Do you think a 20B or 13B fit the 2002s????...
Old 09-26-01, 11:15 PM
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thanks plenty 13bace.
Any idea on the costs (besides engine) of plopping a 20b into a FC?
Old 09-27-01, 03:56 AM
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Mazda even put a rotary in a Miata. One testbed for the new Renisiss was a modified Miata. They let reporters drive it even! I hope Mazda builds a rotary Miata; Zoom Zoom Mmmmm
Old 09-27-01, 07:39 AM
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Node - I getting ready to put a 20b into my FD.
I image the costs are going to be about the same,
maybe a little less for hte FC. From what I understand, the 20b will fit easier into 1st or 2nd gens. 3rd gen will require more work. Pettit has developed a sub-frame for there 20b conversion in to FD. It can be bought for about $2k. They charge $40k complete job. I am expecting to spend about $20-$25K doing most of the labor myself. I think it also depends on if you rebuild the 20b and to what extent.
Old 09-27-01, 09:11 AM
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20bs are so sexy. Can I hump your leg?
Old 09-27-01, 10:51 AM
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Originally posted by fcturbo2

wow that's cool!..a 20B 5 series Bimmer. Do you think a 20B or 13B fit the 2002s????...
A 13B should fit fine. A 20B may be tight, but if it can fit in a 1st gen it should fit a 2002. The 20B is about 7 inches longer than a 13B.
Old 09-27-01, 10:57 AM
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Originally posted by Node
thanks plenty 13bace.
Any idea on the costs (besides engine) of plopping a 20b into a FC?
You can get a complete motor for $2500-4000. K2RD's mounts are $430. You'll also need an ECU and ignition parts, figure at least $2000 for that. If you use the stock turbos you'll have to make a custom exhaust. Otherwise you can just go single turbo with a custom manifold, etc. You'll also need a custom radiator and IC. You may want to get a coilover setup to help compensate for the added weight up front. I would say that if you're doing it yourself shoot for a minimum of $10,000; but expect it to cost more--say $15,000 to be safe. Everyone always talks about $30K+, but that's if a shop is reaming you, umm, I mean doing the job.
Old 09-27-01, 11:00 AM
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Originally posted by Larry Oslund
Node - I getting ready to put a 20b into my FD.
I image the costs are going to be about the same,
maybe a little less for hte FC. From what I understand, the 20b will fit easier into 1st or 2nd gens. 3rd gen will require more work. Pettit has developed a sub-frame for there 20b conversion in to FD. It can be bought for about $2k. They charge $40k complete job. I am expecting to spend about $20-$25K doing most of the labor myself. I think it also depends on if you rebuild the 20b and to what extent.
I'll be trying a 20B after my wallet recovers from my last project. That may take a while. I don't think it should cost me more than about $10K, but I'll be doing EVERYTHING by myself.
Old 09-27-01, 12:17 PM
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CHECKPOINT in sacramento has a rotary in a miata....13.1s SUPPOSEDLY on street or drag radials.....12s with slicks.....DONT know the WHOLE story behind it but ive seen it and the bov sounds super nice on it.....
Old 09-27-01, 11:44 PM
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thanks alot ace, and good luck on your swap
Old 09-28-01, 09:21 AM
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Originally posted by Node
thanks alot ace, and good luck on your swap
You're welcome. I don't really need luck, just money!
Old 09-30-01, 08:01 PM
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Go for something that is lighter than a Miata
RX-Midget, 1500 lbs ready to run with approx 200 hp on tap from a street-ported 13B N/A
Old 09-30-01, 09:24 PM
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Re: Anyone ever put a Rotary in a miata?

Originally posted by Node
I was thinking. That piece of crap is so light, and with a 13b (maybe even a 13b turbo) it would be pretty fast cause its a light bitch car.
Anyone know of any conversions. I searched yahoo a bit and didnt find too much. Would it fit? And what about the transmissions. I would think a miata would be FWD.
The Miata is RWD. If you're using a 13B you could use the transmission as well. You'll just need to make your own driveshaft.
Old 10-01-01, 03:11 PM
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i personally think you fcan put almost any motor into any car as long as you got the "$$$$" i know easy swap's for t2 motors. don't know too much on the cosmo. i have put a 13b turbo into a 1st gen. and also a 13b turbo into a '72 datsun 510. those where pretty fun. and yes it is the driveshaft that makes the conversion a pain in the *** but in the end it is all worth it
Old 10-02-01, 03:23 AM
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Japanese mini car enthusiast told me people have put rotories in Subaru 360s over there! Thats a 800-1000lb rear engine car, if it could hook up it would wheelie like Eddi Bellows Porsche 911...
I would like to do that to a Subaru 360 or Fiat 500.
Old 10-04-01, 06:14 PM
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you wanna talk about crazy engine swaps? The hennesey shop in houston, you know, the one that turbocharges the Vipers? Well, they are putting a viper v10 in the back of a pt cruiser.
Old 10-06-01, 08:39 PM
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I will try and find the issue agian, but in the last few months turbo had an article on a miata with a 7 powerplant.

It was impressive, anyone else see it... had a couple super nice supra's... killer looks and obviously the power too.
Old 10-19-01, 12:59 AM
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Re: Anyone ever put a Rotary in a miata?

Originally posted by Node
I was thinking. That piece of crap is so light, and with a 13b (maybe even a 13b turbo) it would be pretty fast cause its a light bitch car.
Anyone know of any conversions. I searched yahoo a bit and didnt find too much. Would it fit? And what about the transmissions. I would think a miata would be FWD.
Node, I seriously hope you are kidding. Most people that know **** about miatas can kick FC and sometimes FD ***. It isnt a peice of ****. Have you ever driven one. And second, why are you even thinking about it if it is just a light bitch car. Are you a bitch that wants a light car. Now if you are serious about making some HP in a miata go to www.miataforum.com Look in the power section. Dont act ignorant.
Old 10-19-01, 04:44 PM
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Driven a turbo FB lately?

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Actually a Miata is kinda fast , at stock.. But anyways, Mazdatrix did a conversion a while back, maybe 2 years or so?

Old 10-19-01, 04:50 PM
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One of the original prototypes for the Miata as well as a couple of M2 cars had rotaries in them, they had the RX5 name on them.


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