Freestyle Waterbox tech/ placement theory

[swapmeet]

I don't have room for a standard waterbox on my ski, (chopped up FX1) so I purchased this.

I know it's ridiculously small, but for right now it's what I have to work with. I'm planning on mounting it on the side near the carb, heading towards the back. I might (might) dump the exhaust out the side as far back as I can, but I'll run it out the back first before I commit.

But here's my question. How do I make it most effective?
I was thinking that if I have a up and down bend between the stinger and the WB to stop water from pushing back up into the engine, and then mount the WB so the exit was slightly higher than the inlet, gravity would hold a small amount of water in there that would help quiet the exhaust.

The only thing I'm not 100% sure of is the function of the port. I assume that you add a water inlet, but where does that come from? Does it need to be metered in any way?

Anyone have any insight on my situation?

 

[Waternut]

The water inlet is actually how that waterbox is silenced. I'd personally want dual cooling to run it. One will go to the b pipe like normal. Instead of running the second pisser from the head to the side of the ski, run it from the head to the waterbox inlet. Running a second flow control valve will help prevent it from loading up at low rpms.

 

[SuperJETT]

Also, use as much rubber hose as possible, not aluminum like I did. The long rubber hose deadens the sound quite a bit.

 

[swapmeet]

Intresting. I never thought about that.

 

[Idok]

that shiould work good!

 

[vitalikol]

I got almost same one in my Envy with big bore strocker and it sound goood. Maybe if I would run water to it - it's would be little bit more quaet

 

[Waternut]

I would love to run something this small but I'm worried about noise level. Curious to know how this works out with water.

 

[swapmeet]

Ya'll keep me honest here... I assume the end with the water fitting is the inlet?

I'm so ready to try all this out.

 

[swapmeet]

I know this is kind of off topic, but since its my topic... oh well LOL.

I have a water inlet on my stinger, and my ski will be set up for dual cooling. Currently I do not have a Flow Control Valve, but plan on purchasing one.

So should I run one, and Tee it off where it flows to the stinger and the WB? or just do one or the other? OR, run two...? which seems excessive.

 

[Waternut]

Normally people run a flow control valve to the stinger on the pipe chamber. This puts extra water into the waterbox as well as cooling the waterbox and the coupler. Since the waterbox you have is really just a resonator and not a waterbox, you need the extra water to help quiet the noise down. You can try running only the pipes stinger but because of the design on that resonator, all the water will flow straight through as if it was just a slight larger tube and you'll get very little sound deadening.

 

[swapmeet]

So you're saying do both.... I think.

Your comment about the straight through nature takes me back to my inital question. If I mount the resonator at an angle vertically, forceing the water to flow slightly up hill, would that add to its silencing capabilities?

 

[Waternut]

Yes I'm recommending you run both. I don't think mounting the waterbox vertically will have much effect. Mcdog used to run a carbon fiber waterbox with water injection. His outlet was 90 degrees from the inlet and I believe he had it pointed up but not positive there. Bottom line, that was a loud waterbox and he didn't run it very long. He was running a stroker motor though so that could've added to some of the sound increase.

 

[swapmeet]

Ok, thanks for all your help I reallly appreicate everyones feedback! I get my hull Monday and I can start looking at how much space I really have. I may make a waterbox/ resonator that goes in the stock location if this one is too loud. Fun fun fun!