peripheral or bridge
#2
Engine, Not Motor
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Bridge port:
![](http://www.mazdarotary.net/images/tech_pics/portbdg.jpg)
Peripheral port:
![](http://www.mazdarotary.net/images/tech_pics/portper.jpg)
There is no "better" port. Both have their advantages and disadvantages. If you intend to make lots of power on a side port engine (400HP +) then a bridge port is the way to go but keep in mind that you end up with a 1200-1500 RPM idle, questionable low end (depending on tuning) and an engine with a wonky vacuum signal that is hard to tune.
Peripheral ports are another story. You can make huge power but the low end is even worse (midrange is better then side ports) and again you're going to have that 1500 RPM idle.
Most normal people don't consider peripheral ports streetable (I am not one of them). Many people don't consider bridgeports streetable but I am not one of them.
![](http://www.mazdarotary.net/images/tech_pics/portbdg.jpg)
Peripheral port:
![](http://www.mazdarotary.net/images/tech_pics/portper.jpg)
There is no "better" port. Both have their advantages and disadvantages. If you intend to make lots of power on a side port engine (400HP +) then a bridge port is the way to go but keep in mind that you end up with a 1200-1500 RPM idle, questionable low end (depending on tuning) and an engine with a wonky vacuum signal that is hard to tune.
Peripheral ports are another story. You can make huge power but the low end is even worse (midrange is better then side ports) and again you're going to have that 1500 RPM idle.
Most normal people don't consider peripheral ports streetable (I am not one of them). Many people don't consider bridgeports streetable but I am not one of them.
#4
If you drive it a lot, then a streetport is a better option. They have better low-end torque for around town driving. Bridgeports can be streetable, but it depends on your definition of streetable. P-ports are the same way. The guys at pinapple racing have daily driven p-port engines, and even driven one crseveral thousand miles while hauling a trailer. Its all about how you tune it and how careful you are with the setup.
Bridge and p-ports also are quite loud.
Bridge and p-ports also are quite loud.
#5
Engine, Not Motor
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Originally Posted by dwb87
So, I should probably go street port then if I want more torque?
I personally consider peripheral ports streetable. In fact any day now my peripheral ported housings for my GSL-SE should be back from the machine shop. But a PP engine is definitly NOT for someone who needs to ask.
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#6
ROTARD FOR LIFE!!!
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not to mention, from what ive read. you cant just start drilling holes in the housing... it takes some prep to make a Pport last any reasonable amount of time. Like a balanced rotating assembly to make use of the power. They say Pp engines make no power till north of 6,000rpm and keep going till 10-12k.
But dont take my word for it... Im in that group that wishes I could spend money on that... 300+hp NA is sick...
But dont take my word for it... Im in that group that wishes I could spend money on that... 300+hp NA is sick...
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Originally Posted by NO PISTONS
do a half bridgeport
Go full or go home
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#10
yeah go fullbridge.
I went halfbridge and wish I had gone full.
that said, my halfbridge is pretty streetable. Not that loud, lots of power, not a lot of torque but enough that it's not hard to drive. Can still putz around town at 2000rpm without any issues, but it doesn't seem to like 5th gear below 55mph now.
I went halfbridge and wish I had gone full.
that said, my halfbridge is pretty streetable. Not that loud, lots of power, not a lot of torque but enough that it's not hard to drive. Can still putz around town at 2000rpm without any issues, but it doesn't seem to like 5th gear below 55mph now.
#12
Engine, Not Motor
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Originally Posted by riceburner1r2001
hey aaron cake how much they charging u to do the housings
Most machine shops can do it for a few hundred dollars. Most of the vendors sell them for about $700-$1000 each.
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