New exhaust

[Duster]

Well, I think most of you guys already know that I don't believe in the myths of 4 stroke exhaust as you guys know it...

I come from the days of true tuned exhausts that created real performance.
(The 2 stroke days)

I've wasted my money on the big-name 4 stroke exhausts... and know they are non-performers.... like those non-sporting show dogs.... look good, sound good, but have no bite.

Just "sounding" more powerful doesn't 'do it' for me.

So you know it has got to be something totally different to sell me on trying it.

So here is a teaser photo to catch some interest...



Now... if you want to learn the real truth about 4 stroke exhaust and getting real performance... this is where you'll get the truth.

[bigd93]

what the **** is that, lol how does it work lol

[Duster]

QUOTE (kfx450rider @ Aug 18 2009, 10:19 AM)

what the **** is that, lol how does it work lol

It's called a resonator chamber... The dirt bike guys know what it's all about.

Performance gains, and also sound reduction with no losses.


The chamber is tuned to the engine and exhaust flow, and is also tuned harmonically to cause some sound waves to collide and cancel each other out.

Sounds travel in form of waves from the source to our ear.
Causing 2 identical to collide cancels both out... so the sound just is no more...
)))))))))))|((((((((((

As far as the flow is concerned, the chamber creates additional volume up in the header where it is needed to allow quick escape of the exhaust gasses, when needed, without having header diameter over-kill. In other words, simple scientific laws cause it to act as a pressure regulating valve in a way, with no moving parts.

When header pressure spikes to a tuned level, very simply, the header pressure is greater than the pressure inside the chamber, so the excess escapes up through the port into the chamber. And the reverse happens after the high pressure of the pulse passes by... the excess springs back out behind it, because the header pressure is now lower.

This increases capacity and flow, and also acts similar to having a longer exhaust tubes.

On the return path of back pressure, the backpressure is also eliminated, resulting in more complete intake. If you will notice, the mid pipe is quite a megaphone. As the backpressure travels back the pressure raises as it enters the smaller header... and then you guessed it... there's the resonator chamber sitting there at a lower pressure, and the back pressure takes the path of least resistance into there, instead of charging on back into the exhaust valve at the crucial moment during intake, when both the intake and exhaust valves are open at the same time.

The only down side I have been able to find so far is that the header between the head and the resonator operates at a higher temperature... I guess due to no cooler backpressure flow making it back into that area. I know a lot of people wrap for hotter faster exhaust. It's just a little hot on the leg unwrapped is all... not bad with pants on though...

[offroadhunter]

I don't know much about it but it looks real impressive.

[Duster]

QUOTE (Smatuito @ Dec 7 2009, 08:11 AM)

i have no idea how to fit exhausts, how much does it cost for a garage to do it?

It is sooo easy to install the Jardine RT99 that I am confident anyone can do it themselves.
If you can read the instructions you can do it.

The hardest part of the whole job is getting one bolt out that holds on the stock muffler.
And that's only because it's in there tight.

[darryl19Dhudspeth63]

I wonder how to do it... Feel interested... WoW!