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Peripheral ports- ideas/pictures

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Old 10-12-02 | 06:58 PM
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Peripheral ports- ideas/pictures

There is more than one way to cook a chicken and more than one way to make a peripheral port. What are some of the things you have seen and/or tried? Pictures are even better. Carb types, throttle bodies, etc.
Anybody out there ever tried perpheral ports as secondaries on a street (wink-wink) engine.
I have seen some interesting stories of sliding throttle mechanisms and telescopic ports.
Show and tell.
Old 10-12-02 | 07:00 PM
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man you are really going all out on some of these projects. it's nice to see some people go away from the norm. even if it doens't work you might get ideas for somehting else. i don't really have anyhting but try talking to rob @pineapple racing. that guy knows his **** and has built every kind of rotary there is. he is also a cool guy just to bullshit with
Old 10-12-02 | 07:10 PM
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This is an area that people have really spent a lot of time on. When I start resurfacing housings for others I will probably see some wild things come in. I'm sure that alot of people will not want pictures of their porting posted. You have to honor that. But here people that are will to show their work off can give us a view of their creativity.
Old 10-12-02 | 07:26 PM
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the telescoping throttle bodies was on the R26B that was in the mazda that won le mans in 1991. here is a pic
Old 10-12-02 | 07:31 PM
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Badass!
Old 10-13-02 | 11:56 AM
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Is the flywheel really on that end of the engine or was the picture just reversed?
Old 10-13-02 | 12:58 PM
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That is an engineering marvel!
Old 10-13-02 | 04:55 PM
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Picture is reversed. Too bad the racing sanctions banned the telescopic intake the following year.
Old 10-13-02 | 06:23 PM
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It's too bad those blue caps are over the exhaust ports, It would be intresting to see what they look like.
Old 10-14-02 | 01:11 PM
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Re: Peripheral ports- ideas/pictures

Originally posted by Scalliwag
There is more than one way to cook a chicken and more than one way to make a peripheral port. What are some of the things you have seen and/or tried? Pictures are even better. Carb types, throttle bodies, etc.
Anybody out there ever tried perpheral ports as secondaries on a street (wink-wink) engine.
I think this may be an example of what you're looking for. I found this here on the forum somewhere.


Last edited by TYSON; 10-14-02 at 01:15 PM.
Old 10-14-02 | 04:25 PM
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I've heard of it being done but never seen it. Great picture man!
Old 10-14-02 | 04:57 PM
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WHAT DOES A peripheral PORT DO ;AND WHAT IS THE DIFF.???
Old 10-14-02 | 05:32 PM
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A peripheral port is cut into the periphery (hence the name) of the rotor housing and not in the end housings. The exhaust ports are peripheral ports. The standard intake ports are side ports. Peripheral ports are open for a longer duration and flow much better. They are fantastic for high rpm use. The downside is that they have zero low-mid range power, and have a very high idle. A peripheral port also need little to no muffling of the exhaust to work good. There is also a very high amount of port overlap which dilutes the incoming air with exhaust gasses at lower rpms. This is what contributes to the poor low end. Great for race use but unusable for street use unless you are an Australian! Gotta love those guys. Naturally aspirated peripheral port engines can get up to about 350hp but they have to send the redline sky high to do it.

Last edited by rotarygod; 10-14-02 at 05:34 PM.
Old 10-14-02 | 06:30 PM
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That is a helluva good looking motor!
Old 10-14-02 | 09:59 PM
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thats a SCOOT engine.
They're the ones w/ the 710RWHP 2 rotor FD.
Mucho Power
I forget what kind of turbo they use though.
Old 10-14-02 | 10:05 PM
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That's a T51, I think the HKS kit. There is a video of that dyno run around. Seemed to take about a half hour for that turbo to spool!
Old 10-15-02 | 06:20 PM
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Full PP turbo RICE RACING style...
Old 10-15-02 | 06:27 PM
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damn forum


Last edited by REVHED; 10-15-02 at 06:32 PM.
Old 10-15-02 | 07:15 PM
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All that work to put a cast exh manifold on!? Why don't you have him make a exh manifold too while he's at it?


Oh yeah, Looks good, nice intake!
Old 10-15-02 | 07:15 PM
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That's cool Revhed. Is it yours?
Old 10-15-02 | 09:12 PM
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why's the side port still there?
Old 10-15-02 | 09:19 PM
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hey - that plenum is made out of cardboard!

-pete
Old 10-15-02 | 09:36 PM
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Originally posted by Scalliwag
That's cool Revhed. Is it yours?
Nah, I wish it were mine. It's one of RICE RACING's.

As for the side port, you can't quite tell in the pic but it's obviously been filled in.
Old 10-15-02 | 10:03 PM
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Originally posted by rpm_pwr
hey - that plenum is made out of cardboard!

-pete
I think that is an attempt to either hide a design of the plenum. Or else that is a really lame *** attempt to makke one!
There is definately a story behind that. There is just too much nice work on that motor for the cardboard to be passed as part of the finished work.
It is a nice looking motor.
Old 10-15-02 | 10:08 PM
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Originally posted by fdracer
why's the side port still there?
The more I look at the picture the more I think it is a mock up for a project. It was probably just tossed on the stand to get some measurements or something.
With the e shaft out of it it was not being assembled at this poiny obviously. Maybe the plenum was being worked out. Cardboard makes for good modeling material.

Last edited by Scalliwag; 10-15-02 at 10:12 PM.



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