I've been into rx7's for a while but just resently started actually learning anything about them. there are alot of terms thrown around that i dont completely understand, mostly about the intake and porting of the engine. things like bridgeporting or 6 port turbos. what exactly is that and whats better. what other intakes are there or are these 2 the only one im extremely confused. i was reading someones post earlier and they were basicly arguing about intakes. if anyone can explain or give me a link so i can learn more it would be a great help.

thankz

 

Porting:
http://www.mazdarotary.net/porting.htm

Turbo 6 port stuff:
Mazda factory turbo 13Bs are 4 port. The NA engines since '84 have all been 6 port. All TII engines are thus 4 port, referring to the fact that they have 4 intake ports instead of the NAs 6 intake ports. When someone does a turbo 6 port, they are referring to turbocharging the NA engine.

 

thanks that helps my understanding alot.

But do you have pictures of the 6 port na vs. the 4 port turbo?