Other The ScupperBox

LimitedSlip7

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Apr 24, 2012
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Marion, Ohio
#1
Having problems with water filling up your lay-down style pipe and getting into your expensive motor? Can't fit a tall waterbox into your hull but still want protection against water intrusion? Don't want to worry about rubber flaps degrading and tearing off? This might be the waterbox for you!

Designed to prevent water from rushing back up your exhaust tube while maintaining a compact size, this waterbox is laser cut and CNC bent from corrosion-resistant 5052 aluminum before being TIG welded. As soon as water starts to flow back into the box, the hinged aluminum flap closes tight against the baffle, significantly limiting flow back into the box while allowing exhaust gasses to flow freely once you're back on the throttle.

$269 + Shipping


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Waterbox Backflow Tests:
This video shows a couple of the bench tests performed to simulate hypothetical situations that could cause significant amounts of water to rush back into the exhaust. I used the popular PFP and TNT waterboxes as benchmarks.
 
Last edited:
Joined
Jul 29, 2011
Likes
1,098
Location
Charlote NC
#5
I had the opportunity to be a test dummy. This box works and it works very well. No back flow issues at all and I think it may have made a slight power increase.
 

DAG

No Risk It, No Bisquick
Joined
Apr 19, 2006
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3,508
Location
Charlotte, NC
#10
Didn't run one but got to see the build quality and just like the fuel cells it's is second to none. Love to see you actually got these out for people to actually try and review before rushing it to market unlike 99% of the other guys. nice job and perfect execution!!
 
Joined
Jul 29, 2011
Likes
1,098
Location
Charlote NC
#17
i ride surf,will corrosion build up on flapper hindges and make it stick ?what material is the hinge systeme made of? thanks
Having problems with water filling up your lay-down style pipe and getting into your expensive motor? Can't fit a tall waterbox into your hull but still want protection against water intrusion? Don't want to worry about rubber flaps degrading and tearing off? This might be the waterbox for you!

Designed to prevent water from rushing back up your exhaust tube while maintaining a compact size, this waterbox is laser cut and CNC bent from corrosion-resistant 5052 aluminum before being TIG welded. As soon as water starts to flow back into the box, the hinged aluminum flap closes tight against the baffle, significantly limiting flow back into the box while allowing exhaust gasses to flow freely once you're back on the throttle.

$269 + Shipping


View attachment 321024 View attachment 321023 View attachment 321025
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Seems like reading would answer your question.......
 

LimitedSlip7

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Marion, Ohio
#19
i ride surf,will corrosion build up on flapper hindges and make it stick ?what material is the hinge systeme made of? thanks
The flap and hinge are made from 5052 while the pin is made from hard-anodized 6061. The excess oil and carbon deposits from the exhaust also help protect and lubricate the parts. As long as you flush your ski after riding salt, or at least give it a quick blip to clear out the box, you shouldn't have a problem.
 

LimitedSlip7

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#20
If anyone is on the fence about trying one of these, I'll offer a 90 day money back guarantee on this first production run if you aren't 100% satisfied with it! Don't like the sound? Doesn't fit quite the way you want? Not happy with the performance? Just return it! The only stipulation is that it can't be cut up or modified.

I can also modify the inlet/outlet tubes per request for perfect fitment!
 
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