Other Waterbox...do you really need one?

[mike b]

Setting up a 1200 yamaha motor w/o waterbox right now. Can i just continue with my method of no waterbox? Is noise the only negative? what about cooling? Backfires? engine running away?

 

[ProSouth]

yes you need it. it helps with water back flushing into the motor.

 

[Byeai]

You need some back pressure its going to be hard to tune

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[mike b]

Wouldn't you get most back pressure from the manifold and exhaust pipe? And would i still need alot of tuning or any if i use a smaller waterbox then? thanks for the responses guys!

 

[Byeai]

Yes going to need tuning I threw a stock kawi 1100 in a blaster and bolted it up and it ran like I had to tune it more rich then factory even tho everything was stock drom that ski into the other exhayst routing is different

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[mike b]

Yes going to need tuning I threw a stock kawi 1100 in a blaster and bolted it up and it ran like I had to tune it more rich then factory even tho everything was stock drom that ski into the other exhayst routing is different

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Where did you notice most of the lack of performance? Low speed or high speed or Both?

 

[ProSouth]

small waterboxes are fine. as long as the "baffling" is still there. what is this in? a superjet?

 

[Byeai]

Low speed my high speed was perfect but I help a buddy do a gp1200 swap and it was the same issue I said go richer he said idk so I was like ok come get me when u cant get it to run right two hours later he came back and said help with in minutes I richened it up and it was flying

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[mike b]

Low speed my high speed was perfect but I help a buddy do a gp1200 swap and it was the same issue I said go richer he said idk so I was like ok come get me when u cant get it to run right two hours later he came back and said help with in minutes I richened it up and it was flying

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Did you richen all screws or just the low speed adjustment? and to richen the carbs you screw outwards correct? or am i backwards..

 

[Byeai]

Just the three low speed screws turn them left loosen them do it equal

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[mike b]

Just the three low speed screws turn them left loosen them do it equal

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Nice. Ill keep that in mind after the first ride while at the lake to try that out.

 

[mike b]

small waterboxes are fine. as long as the "baffling" is still there. what is this in? a superjet?

Going onto a wb1. So the baffles are to keep water from going back into the motor?

 

[Matt_E]

I can't believe no one has mentioned the number one reason why you need a waterbox: So you aren't that one asshole on the water that gives everyone else a terrible name and gets you kicked off the water.

 

[Byeai]

I can't believe no one has mentioned the number one reason why you need a waterbox: So you aren't that one asshole on the water that gives everyone else a terrible name and gets you kicked off the water.

Lol matt he said it in the beginning lol well kinda

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[mike b]

I can't believe no one has mentioned the number one reason why you need a waterbox: So you aren't that one asshole on the water that gives everyone else a terrible name and gets you kicked off the water.

I ride days when other people aren't there. I like when people aren't there to stick there nose in my business when i ride. You cant even do spins at the lake so I go when and where there aren't people. But like I said I don't care about the noise for myself, I already knew why not to and that is for jet skis getting in trouble. Thanks for the response tho

 

[Byeai]

I have a waterbox on mine and its still stupid loud

https://www.youtube.com/watch?v=uk3yFcLWPpk&feature=youtube_gdata_player

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[mike b]

See i like the noise. Louder the better for me..from girls to mufflers, the louder the better hah. So just make sure the waterbox is stopping water from backing into motor pretty much right?

 

[Byeai]

Yea

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[TheBuzzard]

you dont need a waterbox unless your motor requires the back pressure, you ride where noise is a no no , or the boats you chase hate loud skis.

 

[mike b]

you dont need a waterbox unless your motor requires the back pressure, you ride where noise is a no no , or the boats you chase hate loud skis.

Yeah boats will hate and so will rangers. I was just wondering risks of testing it w/o box since i don't have one that fits right now, it will always be loud with at 1200, and im dieing to ride the boat. Just wanting to do research and make sure im not risking the motor's health.