2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

rx-8 rotors in an FC ????

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Old Oct 28, 2003 | 03:47 PM
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rx-8 rotors in an FC ????

does anyone know if rx-8 rotors will work in an fc i know i read a post about it somewhere before but can't seem to find it anywhere i know the renesis rotors are much lighter and provide higher compression for us N/A guys so both these factors together should give us a fairly reasonable performance boost correct

If anyone has any info on this or links please post them
Old Oct 28, 2003 | 03:50 PM
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Should work fine. They are dimensionally the same. Not sure the weight, but probably lighter then FC. You'll need to change counterweights to match.
Old Oct 28, 2003 | 04:30 PM
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Click here for the info you want
Old Oct 28, 2003 | 04:40 PM
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Originally posted by Mephis
well i know there are some issues with some rotor's apex seals making a small groove but its nothing to worry about. try it im sure with all the teen drivers buying em there will be a few in junkyards soon.
Hey man, aren't you 16
Old Oct 28, 2003 | 04:59 PM
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i never go over what the sign says, unlike most dumbasses. my moto is keep it at the track yes i did some stupied **** along time ago but i dont anymore too many cops to risk it.
Old Oct 28, 2003 | 05:10 PM
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How could you do stupid **** along time ago if your only 16? Hell you and I haven't even been a live for along time.
Mazdatrix built a 13B with Renesis rotors to see if they work or not, but I haven't heard anything from them. Of course I think I said that on nopistons though.

Last edited by j200pruf; Oct 28, 2003 at 05:28 PM.
Old Oct 28, 2003 | 05:42 PM
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WHY? Can you afford them? Are you smoking crack? This thread is almost as bad as the Renesis swap thread. Please people, get a grip on reality.

The higher compression is almost going to require a stand-alone ECU. Most NA owners don't have the money for such mods. If you got money, you probably own a turbo. Making a turbo go fast is relatively easy and cheap. The new MSPRE just spins higher revs - it's the secret for the more power. You don't feel 250 AT 3,000RPM!!!


-Ted
Old Oct 28, 2003 | 06:48 PM
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if i had the money which i do i won't own a turbo..most likely if i had lots and lots of money i would own a turbo.. yea maybe.. RETed"Making a turbo go fast is relatively easy and cheap"..... Making a fast cheap turbo car to be reliable is relatively impossible ! just my 2 cents
Old Oct 28, 2003 | 07:04 PM
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Originally posted by RETed
WHY? Can you afford them? Are you smoking crack? This thread is almost as bad as the Renesis swap thread. Please people, get a grip on reality.

The higher compression is almost going to require a stand-alone ECU. Most NA owners don't have the money for such mods. If you got money, you probably own a turbo. Making a turbo go fast is relatively easy and cheap. The new MSPRE just spins higher revs - it's the secret for the more power. You don't feel 250 AT 3,000RPM!!!


-Ted
dude relax can i afford and am i smoking crack, well lets see if i was an ******* right about now i'd tell you to **** yourself and to go smoke a pole but i'm not so i won't say that but not that its any of your business but yes i can afford them and i am fully aware that they will require and ecu and so much more i just bought my first 7 and also with it got a pile of n/a motors 2 in running condition so why not try and do something with what i have will it be as fast as turbo prob not even close forget that not even prob no way will it cost me the same easily if not more will i learn more about my car and mechanics in general by doing this over a turbo swap ******* right i will.

I am not interested in this just for hp but also as a way to learn more about my car at the same time and didn't ask for someone with a chip on his shoulder to start flaming on about **** when all i asked was for simple information
Old Oct 28, 2003 | 07:37 PM
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Anything is possible.

There are a lot of people out there who don't like turbos. Yeah they are a cheap way to get horsepower, and that's why mazda used turbochargers, they're cheap and good for street use. I think all of mazda's race cars were NA. That said I still wouldn't mind owning a TII because they kick ***.

IMO, the extra compression isn't really worth the swap alone. Maybe a 5-6% gain in torque and horsepower throughout the torque curve.

I didn't know that the seals were made lighter. That could be a problem when the seals float over the exhaust ports. I'd guess that the best way to do the swap would be to use the renesis e-shaft and counterbalances?

Also, the airflow is what limits the revs and horsepower. If you put in rotors that can go to 10,000rmp but power peak is at 9k....then the rotor swap is pointless.

So how can the ports be made bigger? (exhaust mainly)
the side renesis ports have TWICE the area of our old exhaust ports and two sets of actuators to improve daily drivability.
Old Oct 28, 2003 | 10:13 PM
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Yo,

Originally posted by RETed
Most NA owners don't have the money for such mods. If you got money, you probably own a turbo. -Ted
C'mon now Ted, NA owners ain't cheaper than Turbo owners...

...just smarter.






Kevin
1989 GTUs "Recent mods: $1100+."
Old Oct 28, 2003 | 10:24 PM
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The Renesis rotors have an extra seal around the oil seals, but Im not sure if that would be a problem or not.

Your best bet for Renesis power is to get a short block Renesis. Then if the tranny lines up with the Renesis I suppose you could just bolt it up. If not you could swap the rotors and rotor housing for the Renny, and sandwich them between the 13B end housings. You would then either have to use the 13B intake manifold, (because the Renesis is drive-by-wire) and get a stand alone computer, or go carb'd.

Any problems with this idea? I think it might work, but Im not sure.
Old Oct 28, 2003 | 10:36 PM
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as far as Option2 magazine is concerned it works, they did a comparison test with a 13B S5 and the renisis rotors, eshaft and stationary gears, the weight dropped by over 3kg when using the renesis parts and they fit like they were designed for the 13B ( funny that).. I have a standing order for 2 sets of renesis rotors as soon as they become available, ( if anyone is interested I get them , as a set , for $380 Can. each)
Old Oct 28, 2003 | 10:40 PM
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Originally posted by PPC-Racing
as far as Option2 magazine is concerned it works, they did a comparison test with a 13B S5 and the renisis rotors, eshaft and stationary gears, the weight dropped by over 3kg when using the renesis parts and they fit like they were designed for the 13B ( funny that).. I have a standing order for 2 sets of renesis rotors as soon as they become available, ( if anyone is interested I get them , as a set , for $380 Can. each)
Isnt that like $30 US? Seriously though, what is that in US dollars?
Old Oct 28, 2003 | 10:44 PM
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Originally posted by BDoty311
The Renesis rotors have an extra seal around the oil seals, but Im not sure if that would be a problem or not.

Your best bet for Renesis power is to get a short block Renesis. Then if the tranny lines up with the Renesis I suppose you could just bolt it up. If not you could swap the rotors and rotor housing for the Renny, and sandwich them between the 13B end housings. You would then either have to use the 13B intake manifold, (because the Renesis is drive-by-wire) and get a stand alone computer, or go carb'd.

Any problems with this idea? I think it might work, but Im not sure.
How are you going to control the 6 port induction?

I would think Renesis rotors in NA S5 housings would be better. P port exhaust is better than side for power, just like p port intake is better for power.
Old Oct 28, 2003 | 10:50 PM
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Originally posted by 00nothing
dude relax can i afford and am i smoking crack, well lets see if i was an ******* right about now i'd tell you to **** yourself and to go smoke a pole but i'm not so i won't say that but not that its any of your business but yes i can afford them and i am fully aware that they will require and ecu and so much more i just bought my first 7 and also with it got a pile of n/a motors 2 in running condition so why not try and do something with what i have will it be as fast as turbo prob not even close forget that not even prob no way will it cost me the same easily if not more will i learn more about my car and mechanics in general by doing this over a turbo swap ******* right i will.

I am not interested in this just for hp but also as a way to learn more about my car at the same time and didn't ask for someone with a chip on his shoulder to start flaming on about **** when all i asked was for simple information

You know you just made yourself look like the hugest *** ever by acting like a total jerk to one of the most knowledgeable forum members on here.

He wasnt being a dick. He was just trying to inform you rand save you from your own ignorance.
Old Oct 28, 2003 | 11:00 PM
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I would think Renesis rotors in NA S5 housings would be better. P port exhaust is better than side for power, just like p port intake is better for power.
True but side exhaust ports are more fuel infficent. But I suppose both ways would work.

Well 6-port actuation would be up to you, it could be done though. Electrically or by engine vacuum.
Old Oct 28, 2003 | 11:09 PM
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Originally posted by adamlewis
You know you just made yourself look like the hugest *** ever by acting like a total jerk to one of the most knowledgeable forum members on here.

He wasnt being a dick. He was just trying to inform you rand save you from your own ignorance.
I made myself look like an ***????!!!!!

Did you not read his post he was the one who started by trying to make me look like some piece of **** who didn't have a clue about what he was asking, unless comments like can you afford them and are you on crack are meant to be positive reinforcement i don't care if he is the rotary god he's an *** in my books and i hope he never answers any of my posts again

I didn't come on here to get blasted by someone i came on here to try and find more info about something that i had already planned on doing i just wanted all the info i could get before trying to go ahead with it but anyways thanks for any positive info i received
Old Oct 29, 2003 | 12:44 AM
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Please...

Just sell your car, we don't need people like you around here.
Old Oct 29, 2003 | 09:27 AM
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what is with all the flames, not everyone on here with an NA is broke, I am. but not everyone. If I wasn't broke, I would still drive an NA, I would own a TII but drive NA.

00nothin, I'm with you, I always like to see something that hasn't been done before. I hope you do it. Even if it is not worth the money, It would still be cool.
Old Oct 29, 2003 | 09:34 AM
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Originally posted by RarestRX
Yo,



C'mon now Ted, NA owners ain't cheaper than Turbo owners...

...just smarter.






Kevin
1989 GTUs "Recent mods: $1100+."


Sorry ted but he is correct that N/a owners do have some cash. Not all do but I personally just put over 1900 dollars into my car and another 300 worth of stuff is comming in a couple of months.
Old Oct 29, 2003 | 10:58 AM
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Originally posted by adamlewis
You know you just made yourself look like the hugest *** ever by acting like a total jerk to one of the most knowledgeable forum members on here.

He wasnt being a dick. He was just trying to inform you rand save you from your own ignorance.
Yeah, I agree, Ted wasn't trying to flame you, just trying to make you look at the big picture and save some money. You gotta weigh risk vs gain or $cost$ vs gain.

Last edited by RotaryRevn; Oct 29, 2003 at 11:05 AM.
Old Oct 29, 2003 | 11:02 AM
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Originally posted by PPC-Racing
as far as Option2 magazine is concerned it works, they did a comparison test with a 13B S5 and the renisis rotors, eshaft and stationary gears, the weight dropped by over 3kg when using the renesis parts and they fit like they were designed for the 13B ( funny that).. I have a standing order for 2 sets of renesis rotors as soon as they become available, ( if anyone is interested I get them , as a set , for $380 Can. each)
380.00 CADCanada Dollars = 290.185 USD

go to xe.com for all your money conversions


You say as a set, then you say each. Do you get one or two rotors for 380 Can?

thanks
Old Oct 29, 2003 | 11:26 AM
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sounds like it would be a nice sleeper

"is that a turbo II?" "nope"

but isnt there a lot more different? like extra intake ports and **** like that?
Old Oct 29, 2003 | 11:28 AM
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why don't you just save your money and get lightened rotors instead of paying for renesis rotors? what the hell is the difference.



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