Muffling a P-Port
#1
OLDROTA
Thread Starter
Muffling a P-Port
I've been doing tons of research to get a reasonable noise level out of a street-driven P-Port (yes I know, reasonable is a stretch). I was looking at these universals from Racing Beat. Supposedly the same construction as the old style from the streetport setup, just larger for turbo.
I will attempt to fit 2 of these (one version is longer and the other is shorter) pre/at the rear axle.
On a local PP around here once, he ran 1 2.5" round standard rb presilencer and one side of an RB turbo II exhaust. It was nearly as quiet as my SP.
The Larger on the right is the uni-rear muff. I may have to replace the Rotaflo in the rear if I get hassled too much...
I will attempt to fit 2 of these (one version is longer and the other is shorter) pre/at the rear axle.
On a local PP around here once, he ran 1 2.5" round standard rb presilencer and one side of an RB turbo II exhaust. It was nearly as quiet as my SP.
The Larger on the right is the uni-rear muff. I may have to replace the Rotaflo in the rear if I get hassled too much...
Last edited by Jaime Enriquez; 07-02-08 at 05:58 PM.
#2
RX for fun
iTrader: (13)
brother Jaime
If you wanna hear it perform, Im using the RB universal 2.5" in my 73 RX-3 with streetport while the quattro with a TII bridge has a 3". if you wanna check it out, come-by sometime next week. Im waiting for new OC lines for the quattro so i wont be able to start it. And if you're lucky, I may take give you a ride on the 3-rotor.
If you wanna hear it perform, Im using the RB universal 2.5" in my 73 RX-3 with streetport while the quattro with a TII bridge has a 3". if you wanna check it out, come-by sometime next week. Im waiting for new OC lines for the quattro so i wont be able to start it. And if you're lucky, I may take give you a ride on the 3-rotor.
#6
Eats, Sleeps, Dreams Rotary
iTrader: (1)
I've been doing tons of research to get a reasonable noise level out of a street-driven P-Port (yes I know, reasonable is a stretch). I was looking at these universals from Racing Beat. Supposedly the same construction as the old style from the streetport setup, just larger for turbo.
I will attempt to fit 2 of these (one version is longer and the other is shorter) pre/at the rear axle.
On a local PP around here once, he ran 1 2.5" round standard rb presilencer and one side of an RB turbo II exhaust. It was nearly as quiet as my SP.
The Larger on the right is the uni-rear muff. I may have to replace the Rotaflo in the rear if I get hassled too much...
I will attempt to fit 2 of these (one version is longer and the other is shorter) pre/at the rear axle.
On a local PP around here once, he ran 1 2.5" round standard rb presilencer and one side of an RB turbo II exhaust. It was nearly as quiet as my SP.
The Larger on the right is the uni-rear muff. I may have to replace the Rotaflo in the rear if I get hassled too much...
#7
Lives on the Forum
iTrader: (5)
I have a friend with a pp 13b second gen. I believe he uses Borla with the removable silencer. He says that having the silencer in kills about 20+ hp off the top end. Without the silencer it is loud as hell. My suggestion, follow what I have done. I run 2 presilencers and a magnaflow, very drivable. When I race I click the switch for an electric dump off the header (qtec). So i get the best of both worlds. I do plan on doing a dyno pull in a month or so so I can measure the difference, but the butt dyno says 20+ hp over 6000 rpm as she really pulls better with the exhaust open!
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#8
Eats, Sleeps, Dreams Rotary
iTrader: (1)
I have a friend with a pp 13b second gen. I believe he uses Borla with the removable silencer. He says that having the silencer in kills about 20+ hp off the top end. Without the silencer it is loud as hell. My suggestion, follow what I have done. I run 2 presilencers and a magnaflow, very drivable. When I race I click the switch for an electric dump off the header (qtec). So i get the best of both worlds. I do plan on doing a dyno pull in a month or so so I can measure the difference, but the butt dyno says 20+ hp over 6000 rpm as she really pulls better with the exhaust open!
#9
OLDROTA
Thread Starter
This Aurotary thread has excellent info on building your own muffs.
http://ausrotary.com/viewtopic.php?f...&sd=a&start=80
http://ausrotary.com/viewtopic.php?f...&sd=a&start=80
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