I'm in the middle of rebuilding the engine, trying to decide if I want to "just rebuild it with same thing" or "get some porting done to get at least a bit extra juice out of the car". I want to keep it NA tho.

This is not about making OMG 100 extra HP ! I just wonder how "loud" it will be if I use ported Turbo housing

I know NA housing comes with a "wing" at the exhaust port, its a cheap way Mazda use to minimize the muffling cost. Turbos don't need the wing because the turbine will keep the noise down (somewhat)

So in a scale of 1-10 , 1 = not much, 10 = will make you deaf. Assume everything else is stock except ported Turbo Housing for NA, how loud will it be ?

I tried to search but found no direct answers.

Why I want to know? cuz NYPD is at "full force" giving people tickets and I don't want them to bother me for "your car is too loud." which happened to some of my friends.

Thanks.

 

I built a 6 port using t2 housings for my first gen. and i think it sounds just a hair louder than my t2. Both cars have Racing Beat pre-silencers and mufflers.

 

It wont be too much louder, on a 1-10 I'd say a 2. Just keep in mind that the turbo housing, at least the rear one, has a hole in the water jacket to feed water to the turbo through the LIM. That will have to be blocked off somehow.

 

find some turbo exhaust sleeves and swap em in.

 

Get the inserts out and port the **** out of it.

Check out my build thread:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/my-13b-na-build-thread-945483/

My car sounds just a tad loud

http://www.youtube.com/watch?v=f2xQFLT1wls

Just kidding... it sounds like a ******* storm on wheels because it's running with the stock header and no exhaust

 

Thx guys so I guess I will just grab a Turbo II housing.