- Location
- Sault Ste Marie
Has anybody ever modified the stock sxr waterbox? if so how and did you get any gains from it?
SXR Modifying the stock water box?
- Thread starter ssmsxr
- Start date
- Location
- Washington
Best by what standards? Definitely can get lighter
Cannibal
Tasty Human
- Location
- Summit Lake, WA
The aftermarket ones offer a weight savings by itself, and hold less water which can equal faster reving and weight savings (by not holding as much water)...plus they sound bitchen.
- Location
- Sault Ste Marie
for better noise has anyone drilled the stock one out?
- Location
- Washington
I believe you have to cut it open to drill
Cannibal
Tasty Human
- Location
- Summit Lake, WA
Yep, you'd have to cut it open to modify it.
If you have an aluminum welder, you can do it yourself. If not, having it welded up is going to cost you about what an A/M box costs.
If you have an aluminum welder, you can do it yourself. If not, having it welded up is going to cost you about what an A/M box costs.
- Location
- wisconsin
We modify stock sxr boxes for more flow for $50. We made a special tool to cut the inner baffle wall without having to cut the box apart. There is a good gain especially in low end snap because of the reduction in back pressure. Its also nice because there isnt much of an increase of noise, just a little throatier.
- Location
- CT
yes we do the drill mod for $150 wil have 3 levels depending on the motor and setup you have. And yes it needs to be cut there is no way you can have it drilled the right way without cutting the box open.
We do different amounts of holes in different places, and then a full gut for built 1100s and bigger.
The TDR and our 6 hole sound the same amd pull to the same RPM. but the TDR is 7 pounds lighter than a stock SXR box. Our 6 hole has a different hit than the TDR but that's somthing you just can measure it hard to explain but if you try it you get it.
We do different amounts of holes in different places, and then a full gut for built 1100s and bigger.
The TDR and our 6 hole sound the same amd pull to the same RPM. but the TDR is 7 pounds lighter than a stock SXR box. Our 6 hole has a different hit than the TDR but that's somthing you just can measure it hard to explain but if you try it you get it.
What Twinturbostang is not telling you is that his modified stock waterbox will fit the exact same where the TDR will take some adjustment to make it fit just right. I had to add some padding in places and I had to cut the Kommander Industries exhaust pipe to make it fit correctly. Rad Dudes modified stock waterboxes still fit correctly and line up well.
So there's that.
- Location
- CT
the TDR is smaller that's true you need to give it a turf job. I think for $150 (Rad Dudes mod) vs $300 (TDR Box) its a no brainier.
Saving 7 pounds in a 400 pound SXR is a joke. The boat is heavy and a lighter water box isn't the answer.
Saving 7 pounds in a 400 pound SXR is a joke. The boat is heavy and a lighter water box isn't the answer.
- Location
- wisconsin
Mark, you do clean work on the boxes and I'm not trying to take anyrhing from you on them, but have to disagree that the box needs to be cut apart. The box doesnt do anything but muffle noise and give a certain level of backpressure. There is no magic bouncing off of walls and reverbing going on in there. We can get the backpressure lowered to the point it needs to be without cutting it apart. I have 3 different 64mph + sxr1100's running pump fuel with these boxes on them. I also recommend the mod when we do a ported 800.
- Location
- CT
That couldn't be more wrong. A water box can make and change a bunch of power. Without going over this again. Take sometime and read this. You don't need to listen to me, but you do need to understand that what you are doing and charging customers for, it may not be the best thing for them or their motors.
Buy it, read it and understand it.
Last edited:
- Location
- wisconsin
We can agree to disagree here. I fully understand how a two stroke engine works thank you. Again...it is the back pressure that causes the difference in performance by changing the way the expansion chamber reverbs signal... the same way a shrter or longer silencer affects the way a two stroke non jet ski application. You just said in an earlier post your using more holes for a higher mod level. Less back pressure for an engine that processes more air. I appreciate your concern for my customers, but there in good hands
- Location
- Peoria, AZ
Are you still doing the mod?
- Location
- CT
Yep go right on the rad dudes site