Static

I have been trying to read about porting my 12a but I dont understand the different types of ports... I have to have mine ported sometime soon but not sure as to what I need to get and who I should have do the job for me... I am intrested in have more TQ and a pretty decent top speed... but I am more for tq and 1/4 times but this thing also get driving on the weekends and sometimes during the week depending on what I feel like driving

rhinor61

Street porting is about as agressive as I would go for a street car, anything else you will be luck if the car would idle under 1500rpm.


If you port you will need more of a fuel system and very free flowing exhaust to get your best power gains.

Noise is always a concern when driving on the street, so be aware of sound and smog laws.


John

Static

can you kinda explain what a bridge port is and what a street port is and what ever others there are... I kinda want to go for as much power as possible I mean its not a must that I drive this thing so I can kinda do whatever

Rx7carl

Well theres lots of websites that detail this. I think theres some links in the FAQ thread too. Search for bridgeport, streetport on the net. Also www.nopistons.com has a great primer on potrint by Judge Ito. Hes a porting guru.

rhinor61

Here is what you are looking for.... with picture even.

Porting web site



John

Static

sweet I read through that and it helped a lot but I still dont know what a 6 port and 4 port are.... I have a theory but dont know that its right

rhinor61

4 port or 6 port are refering to the number of intake runners (tubes) that bring fuel/air mixture into the engine.

6 port is on all 1984 and later 13b non turbo engines.

All other are 4 port, 12a, pre '84 13b and 13b turbo engines.

To count the intake ports (intake tubes that bring fuel/air into the engine.) 2 ports always in the intermediate housing(1 for each rotor), + 1 port in each side housing would be a 4 port engine. 2 ports in each side housing would be 2+2+2= 6 ports.

Make sense...

SO porting a engine would be to modification to the intake and the exhaust ports.

John

Nick-7

This is a great site for understanding ports and the rotary motor.

http://www.rotaryengineillustrated.com/guide.html