04-02-2005, 09:41 PM
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#1
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AF Enthusiast
Join Date: Sep 2004
Location: martinsburg, West Virginia
Posts: 285
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5/6 ports
ive heard people talking about "opening","stuck",or tieing down 5/6 ports,what does all this mean?? ...ive just never heard about these before now .
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04-02-2005, 10:02 PM
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#2
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boost in, apex seals out
Join Date: Jun 2003
Location: sv, New York
Posts: 3,543
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Re: 5/6 ports
the rx7 from 84 and 85 had 6 intake ports as well as the naturally aspirated models from 86-91 (oh and the renesis with the 6 speed has it too). Basically, at 3800 rpm, the secondary injectors come on and the 5&6th (aka auxilary) intake ports open, giving additional airflow and power.
I cant speak for the 1st gen models, but the series 4 rx7 opens the aux ports with the exhaust and the series 5 opens electronically.
when theyre "stuck", they dont open.
when they are tied down, it means they are kept open all the time.
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RX-7 TII
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04-03-2005, 12:32 AM
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#3
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AF Enthusiast
Join Date: Apr 2004
Location: Sugar Land, Texas
Posts: 175
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So it'd be good to tie them down, right?
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04-03-2005, 07:44 AM
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#4
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AF Enthusiast
Join Date: Sep 2004
Location: martinsburg, West Virginia
Posts: 285
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Re: 5/6 ports
Quote:
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Originally Posted by RevvRX-7
So it'd be good to tie them down, right?
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i was gonna ask the same thing,and if it is better to do that,how do you do it?
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04-03-2005, 12:54 PM
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#5
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boost in, apex seals out
Join Date: Jun 2003
Location: sv, New York
Posts: 3,543
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Re: 5/6 ports
tying them down aka wiring them open makes the car idle roughly, there is a loss in low end torque and fuel economy goes down, but the top end power is increased.
here's some info about the auxilary ports:
http://www.nopistons.com/forums/inde...howtopic=14239
the aux ports are kinda like rotary "vtec", lol.
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RX-7 TII
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04-08-2005, 05:43 PM
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#6
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AF Enthusiast
Join Date: Jan 2004
Location: phoenix, Arizona
Posts: 740
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Re: 5/6 ports
i would suggest getting the s5 setup for the aux ports, because wire open will just make you slower , by loosing your low end.
that is if you don't have your restricted exhaust. but if you still do no reason to mess with them.
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91 Laser Rs 471 whp at 22psi pump scm-6152e
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04-08-2005, 07:20 PM
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#7
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AF Enthusiast
Join Date: Jun 2004
Location: Montreal
Posts: 721
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Re: Re: 5/6 ports
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Originally Posted by ShortyDTP
i would suggest getting the s5 setup for the aux ports, because wire open will just make you slower , by loosing your low end.
that is if you don't have your restricted exhaust. but if you still do no reason to mess with them.
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you can covert your system to have them opened by a rpm switch with the airpump, but you need to keep ur airpump.
one of my friend even did this to his gsl-se
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04-12-2005, 07:05 PM
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#8
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AF Enthusiast
Join Date: Sep 2004
Location: martinsburg, West Virginia
Posts: 285
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Re: Re: Re: 5/6 ports
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Originally Posted by D3rELiC
you can covert your system to have them opened by a rpm switch with the airpump, but you need to keep ur airpump.
one of my friend even did this to his gsl-se
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how?!
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