vdubjim

I did a few searches and couldnt find any good infos.

SO what does it mean exactly, and some before and after pics??

mar3

iTrader: (8)

It's like porting the heads and changing the cam on a V8 but the rotary of course, doesn't actually have either of those things. You're removing metal from ports of the engine block (...and possibly, preferrably, of the intake manifold, as well...) to streetport it. This increases airflow but it ALSO acts like you're adding a big cam if you extend the tip of the port...you get more "duration", more time spent "with the intake and exhaust valves" open gulping in air. I don't have pics, so I'm leaving that to the graphics nuts I know are on our website who keep these kinds of pics always close on hand.

Mario III

vdubjim

That is what i gathered from the posts, but again. WHAT is it?

How much is too much, where, etc.....

Hec's 79 gs

https://www.rx7club.com/general-rotary-tech-support-11/porting-825760/

Check this thread, It has a lot of good info and pictures to explain porting on a rotary.

mar3

iTrader: (8)

Thanks for the assist...the avalanche of porting info in that thread will answer any question he may have...

fcs3l0ve

you can use a porting template so you dont **** up

vdubjim

ya that thread is way crazy.

porting template, ive seen some for like 60.00, doesnt someone have on i can just print out and draw on the case?

Aaron Cake

iTrader: (1)

A porting template only gives you the port shape. Pay the $60 because the maker of the template has gone through a lot of trouble (and engines!) to get those port timings.

However 90% of port work does not involve the face of the port.

fcs3l0ve

i am never porting my engine myself, ill leave it up to the guys with experience.