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Racing rotor housings (furai engine)

Old 05-16-09, 01:23 PM
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Racing rotor housings (furai engine)

hello guys
My friend in Budapest has race built RX8 with a 450hp N/A engine, they paid 30K for that thing. He says it is the same engine as in mazda furai concept. His housing cracked, we removed it yesterday. Can you guys help me? where can we order such housing?
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Old 05-16-09, 01:46 PM
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is it a 20bpp?
I believe that's what a furai had. You're gunna have to find out what rotor housings it uses before you can replace one of them.
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Old 05-16-09, 05:56 PM
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Old 05-16-09, 08:28 PM
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Originally Posted by Chaotic_FC View Post
is it a 20bpp?
I believe that's what a furai had. You're gunna have to find out what rotor housings it uses before you can replace one of them.
Yes it is 20B N/A. here is the pic of the housing if it helps.

By beqa2r, shot with DSC-T200 at 2009-05-16
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Old 05-16-09, 08:48 PM
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did u talk to racing beat? i believe they assembled the furai engine.
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Old 05-17-09, 01:26 PM
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Originally Posted by beqa16v View Post
Yes it is 20B N/A. here is the pic of the housing if it helps.
], shot with DSC-T200 at 2009-05-16
could we get more pics? my part number is not that housing!!!!
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Old 05-17-09, 08:29 PM
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Originally Posted by j9fd3s View Post
could we get more pics? my part number is not that housing!!!!
Here are two more. thats me in blue there. But I will delete them afterwards as the owner does not want to keep them on the web

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Old 05-21-09, 09:21 PM
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Isn't that a p port housing?
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Old 05-22-09, 08:19 PM
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Contact Racingbeat at 1-714-779-8677 www.racingbeat.com They built the furai engine.
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Old 05-24-09, 10:02 AM
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Looks like a Mazda Factory Racing PP housing still available through Mazdaspeed. Might be a 13G or something else uber rare though. What are the codes on it? Oh and sell me that front cover set up!
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Old 05-29-09, 07:12 AM
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Originally Posted by RacerJason View Post
Looks like a Mazda Factory Racing PP housing still available through Mazdaspeed. Might be a 13G or something else uber rare though. What are the codes on it? Oh and sell me that front cover set up!
The part number is
ZR03 10 B10 it is a mazdaspeed racing engine rotor housing.
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Old 05-29-09, 10:07 AM
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I know someone who has one for sale, Jim Downing. I will PM you his email address.
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Old 05-29-09, 10:31 AM
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The Furai uses the Racing Beat peripheral port housings which are nothing more than factory 13B housings that they have cut p-ports into. They are not the same as the factory housings. The inlet angle is different as is the port timing. The exhaust manifold bolt pattern is also different between them. The RB housings make more average power than the Mazda pieces but less peak power. That is according to Speedsource's testing.

You could also call Mazmart in Atlanta (across the street from Jim Downing). They'd be able to source you one but if you've already gotten in touch with Jim then that's just as good.
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Old 05-29-09, 07:21 PM
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Thanks guys I have already sent an email to Jim. Hope he can help
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Old 07-07-09, 04:06 AM
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Your engine is a 13G engine and it's hard to find any parts to that engine. The only guy i know who has alot of this parts is Dennis Spencer who bought a nearly new 13G drysump front cover from me that i found in Japan. The Furai engine were built by Racing Beat and they use a 20B core to that project.
If you need parts to a 13G engine you can ask Racing Beat, Jim Downing or Dennis Spencer.
I bought some 13G rotors from RB for some years ago and i asked if they have more but they didn't have any more of this.
I bought 2 rotors from Dave @Mazdatrix that i have in my shop and if any one have a good rotor for sale i need one more to my 3 rotor

Last edited by wankeltrim; 07-07-09 at 04:08 AM. Reason: add some text
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