Anyone measure exhaust noise level?

[J.Jensen]

Is having V-band clamp connections aft of the headers and two sets of pipes a viable option - or is simply side pipes not an option with that noise level?

It would need to pass the initial inspection, and a reinspection after 2 yrs. I wouldn't mind having a quiet and a "proper" set

[Tommy]

Originally Posted by J.Jensen

Is having V-band clamp connections aft of the headers and two sets of pipes a viable option - or is simply side pipes not an option with that noise level?

It would need to pass the initial inspection, and a reinspection after 2 yrs. I wouldn't mind having a quiet and a "proper" set

I see no reason why not. I have two sets of side pipes that can attach to the headers at a square, 8-bolt flange. One set is lightly muffled and the other is fully open for track days. I only used the open set once or twice because even race tracks often have noise limits, and it was almost painful backing it out of my enclosed trailer. ... If you're willing to spend the money for custom built, highly muffled pipes for testing, I suspect there is enough room to build a system that will pass your 84db limit.

[Tom Wells]

J. Jensen,

You can use V-band clamps. I have had some 3" ID clamps connecting the collectors to the exhaust pipes on one of my cars for more than 10,000 miles. They still look and function as new, and are pretty easy to remove and replace.

Here's the URL for the ones I use: Vibrant Performance ::.

I had the flanges welded to the collectors and pipes by a really good local exhaust shop.

BTW, the engine in that car is a 557 stroker, so it does give them a workout. I ran the Daytona track last week with them using the 24-Hour Rolex course, and also take the same car to the lumber store.

Two interchangeable sets of exhaust parts could be practical...

Tom