RTRx7

iTrader: (2)

The majority of people who daily drive their 7 would not want a bridgeport. It is a high flow port meant for race cars. You can get more hp than you would ever need on the street with a streetport and a turbo.

Aaron Cake

iTrader: (1)

The only real reason to run a bridgeport on the street is to control turbo lag. When you get into big turbos (400+ HP) on street ports, you're going to find they are slower to respond. A bridgeport will eliminate this and increase the power up top, but you will then need to live with the low vacuum, poor fuel economy and noise. If you are shooting for sub 500HP then a street port with a modern turbo (GT35, GT40, etc.) will be sufficient.

One thing that bothers a lot of people (myself included) is describing ports in "stages". That means bugger all when comparing ports because my "stage 1" street port may be your "stage 3" street port.

In general a decent street port moves the port out towards the rotor housing about 3MM, and up about 3-4MM.

denalivailboarder

Since there's a lot of killer information - threaded along - check this out...I'm still learning about ports myself, but the following is what I know:

They are all more or less in the same category because most of them use a bridge of material on the plates (side housings) that supports the corner seals as it passes over it.
The effect is a separate port opening which is on the surface to the outside of the normal port, although the runner will be shared with the typical port opening. A regular bridge port will not compromise the rotor housing’s water seals between plates, but the rotor housing might get notched to make the most of the port volume.

The J-port is a bit larger type of bridge port that does compromise the water seals. Despite this, it does not go completely into the water passages behind them. Engine builders use silicone-based sealant to prevent coolant seeping out of the water jackets.

The monster port does go all the way into the water jacket and will require some degree of back filling to block off the coolant from the port. This is used with the addition of sealant.

These can be referred to semi-peripheral ports because of the large amount of 'match porting' (notching) done to the rotor housing, which provides a straighter/larger air path. Peripheral ports dispense with the side ports completely. They will bring the intake charge through a large hole in the side of the rotor housing. Every time we step towards the extreme, it increases the engine’s top-end power, reducing low end torque, and it narrows the engine's power curve.

So basically, if you are going to use your rotary car on the streets you'll most likely want a mild or extended port. Also known as a small or large street port. If you have a tubrocharger you'll want one of theses ports for street use.