Simple Exhaust Questions

[vex]

Thanks Classic. I have a few more questions and desire some more opinions. This is my first Custom exhaust project.

Originally Posted by classicauto

You don't *need* that piece to be SS. Your turbine housing isn't SS anyways. The SS Vbands you'll use after the adaptor will all fit together fine.

Rojer that. I was looking at it the prices of everything and from ATP the V-band SS flanges are about $20 each. So if I were to make V-Band connections for the entire 3" sections I would need $100 worth. I was thinking of just using the adapter and 1 V-band at the turbo as per your following suggestion. Out of curiosity however how much does it cost to get a flange surface ground and where can it be done?

I'd highly recommend avoiding that. You want an easy to remove connection at the back of the turbo.



Whether you use the SS flange by Mazdatrix, or make your own, you can be certain either one will need to be surface ground afterwards. Mild will not be as easily warped.

So I really should go with Mild steel on the engine to header flange then. While I was pricing everything out I came up with a total price for all the flanges to be $242 from ATP and MazdaTrix. This includes:

1. Down Pipe flange (V-Band) Stainless Steel
2. 4 3" Stainless Steel 2-bolt Flanges (For the Pre-Silencer)
3. 4 2.5" Non-Stainless 2-bolt Flanges

To me that seems quite expensive. I'm pretty sure I could just design them up and shoot them out to be Cut for cheaper than picking them up individually like that over the shelf. I think I'll do that and get a quote, depending on what you tell me about grounding I may just do that and design them all, not to mention I could then get stainless steel and not really worry about the shipping.

More mufflers will always be quieter. Offset inlet/outlet will kil alot of noise.

3" single exhaust is NOT quiet.

I don't think the mufflers they offer in racing beat are offset. I'll check Summit and see if I can't find a less expensive SS one that is Offset.