The design
 

Ok ! Spring is alomst here in Canada and it smells like my Z with be at the shop to build the new exhaust soon. Every pieces as been hand polished ( pics later ) and they are looking great !

I have a question about my design ... I want to make the tube longer to have a deeper sound and I tought of making a "detour" before reaching the muffler.

Here's a beautiful drawing to illustrate my plan :rofl2:



Attachment 85409


What do you guys think ?

Awesome

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I'm no expert but I had to take some fluid dynamics 25years ago in school, water in pipes, but air should not be that different. If my memory serves me bends will create resistance to flow and equal many feet of extra straight pipe. Why add restrictions to an exhaust, will this not be counter productive to performance?

Is the purpose of the build only for style and to make a specific sound, or are you hoping for performance gains?

That bend is bad news for flow.

My goal is performance but I want a deep sound as well

But I didnt mentioned that I'm gonna build an "optional" pipe for track
purpose only that will bypass the 2 resonators and that bend.

It will be detachable with v-bands ... So 10min before track day, i'll
switch to this straight pipe, thats the goal tho ....

So what's the purpose of the bend?

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Longer tube = deeper sound

My opinion is you should play with different size of resonator and muffler for the deep sound instead of having unnecessary long exhaust tubing. ;)

Yeah, extra length with some hard bends is a much worse solution than adding one or more additional resonators.

Begining
 

So it as begun.

At last the weather is more clever now here in Canada, so the Z is out since yesterday. At the shop, everything went well to remove the Nismo exhaust. This part is out and will be clean soon for sale.

I red alot about those devil cats bolts but never tought it was going to be THAT pain in the a** to remove. None of the cats are out yet, almost one but it still attached bye the faith of that devil bolt that I did cut. I tried to undo it the way it should, but I stripped it.

On the driver side, I have a problem. I don't have a direct acces like in the videos to unscrew it. A part of my steering assembly is blocking the way, so I can't even try to unscrew it ! Is that something special on the Nismo model ?


Anyways, can't wait to begin the fabrication of the new setup !

I'll keep this tread updated with pics in a few !

If you haven't already purchased an HKS muffler and all that...

Look at an Aero Turbine muffler... proven to flow better than a straight pipe while muffling sound.

Have one on my DD, sounds great.

Cats ...
 

Cats are out !!! Holly victory ...

Now time to fab !

Here is the genious welding that my friend does, this one is the conversion of those Berk HFC to V-band flange:


Attachment 86760

All were already purchased :/ but thx for the suggestion !

Those are some nice welds