3" is way to big for an NA.

You'll need a decent long tube header with runners of about 2 1/8 to 2 1/4 that merges back as far as possible to a 2.75" pipe. The problem is that if you run typical mufflers, they will totally choke the engine due to backpressure. You need to run open straight through mufflers or resonators, in which case the car will be very, very loud.

Turbo bridgeports don't have this issue because the turbo quiets the exhaust down quite a lot.

 

3" is to big? I have plenty of exhaust pressure tho.It sounds amazing but i need something a little more leagal than straight pipe.

 

I want to build a bridgeport, how much do you guys think I need?

 

If you think it's loud now, then prepare to be surprised.

3" is like blowing into hallway...No velocity.

Interestingly, the best exhaust for the NA bridgeported rotary is something like fully divided headers with a 2 1/4 diameter roughly 14" long fed into a megaphone starting at 3" and ending at 4" over a distance of 10 inches. As you can imagine, this is louder then anything you have heard before and totally unsuitable for the street. However what this does demonstrate is the need for a wildly ported high overlap engine to breath.

You're going to want a medium length header with a 2" or so diameter, then a straight pipe of just less then 3" going to the rear of the car. Any mufflers need to be a straight through type, and you're going to need a resonator or two to keep the sound level sane. Even then it's going to be loud and sound like a chainsaw.

Is this a serious question?

A few thousand to rebuild the engine, $1000 for a standalone including wiring, another $1000 for a custom intake, figure $500-$800 for an exhaust system, and another $1000 on misc stuff.

 

sweet got it.

 

[QUOTE=Aaron Cake;7382664]If you think it's loud now, then prepare to be surprised.

3" is like blowing into hallway...No velocity.

Interestingly, the best exhaust for the NA bridgeported rotary is something like fully divided headers with a 2 1/4 diameter roughly 14" long fed into a megaphone starting at 3" and ending at 4" over a distance of 10 inches. As you can imagine, this is louder then anything you have heard before and totally unsuitable for the street. However what this does demonstrate is the need for a wildly ported high overlap engine to breath.

You're going to want a medium length header with a 2" or so diameter, then a straight pipe of just less then 3" going to the rear of the car. Any mufflers need to be a straight through type, and you're going to need a resonator or two to keep the sound level sane. Even then it's going to be loud and sound like a chainsaw.


alright,the road race r.b. headers good? thats what i have now.I think the diameter on them is 2 1/4",not sure.

 

The road race header will work fine.