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resonator bypass
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Curious?....
Though I can't really answer your question, I am curious as to why you would want to bypass the resonator. This component is suppose to increase engine performance.
Though I can't really answer your question, I am curious as to why you would want to bypass the resonator. This component is suppose to increase engine performance.
sound waves...
Let me kinda take that back.... I got to thinking, the 4-TEC is not like the 787cc, which is where I first learned about resonators on the 2-stroke PWC's. On these models, which use the RAVE's, the sound wave is designed to work with the tuned pipe and the amount of variable back pressure to support high performance, on that model....
On your model, the 4-TEC, it appears to be for total sound resonance, which is sound reduction by cancelling out sound waves as they pass each other. If I understand it correctly, when the sound wave first enters the resonator, it bounces off the acoustic walls then, when these sounds pass each other (or run into each other), they cancel each other out. I read that this is actually tuned for higher rpm's, where noise from a motor is at it's highest.
So, your idea of by-passing your resonator would make your ski louder, like putting cherry bombs on your motor. I don't even know if they still make Cherry Bombs and Glass Paks but back in the day, they were the "must have" on all hot rods.
I'd def ask around though, if doing this would have any ill affects on your exhaust valves. The price of replacing burnt valves, or broken valves, may not be worth by-passing. Don't know if that would happen but could be possible.:cheers:
Let me kinda take that back.... I got to thinking, the 4-TEC is not like the 787cc, which is where I first learned about resonators on the 2-stroke PWC's. On these models, which use the RAVE's, the sound wave is designed to work with the tuned pipe and the amount of variable back pressure to support high performance, on that model....
On your model, the 4-TEC, it appears to be for total sound resonance, which is sound reduction by cancelling out sound waves as they pass each other. If I understand it correctly, when the sound wave first enters the resonator, it bounces off the acoustic walls then, when these sounds pass each other (or run into each other), they cancel each other out. I read that this is actually tuned for higher rpm's, where noise from a motor is at it's highest.
So, your idea of by-passing your resonator would make your ski louder, like putting cherry bombs on your motor. I don't even know if they still make Cherry Bombs and Glass Paks but back in the day, they were the "must have" on all hot rods.
I'd def ask around though, if doing this would have any ill affects on your exhaust valves. The price of replacing burnt valves, or broken valves, may not be worth by-passing. Don't know if that would happen but could be possible.:cheers:
dustin1706
New Member
yeah, on a N/A motor, you want a bit of backpressure to help create pressure pulses to help scavenge exhaust gasses out of the cyllinder, just like a 2 stroke. On a Forced induction setup, you want 0 backpressure after the turbo/SC.
So, I would say, if you have a naturaly aspirated model, It will make the seadoo louder, and if anything, lose performance (likely un-noticable), but if you have a SC model, it will make it louder and possibly improve performance (again, likely un-noticable).
My knowledge is limited to automotive applications, but all the same theory and techniques still apply to smaller motors.
So, I would say, if you have a naturaly aspirated model, It will make the seadoo louder, and if anything, lose performance (likely un-noticable), but if you have a SC model, it will make it louder and possibly improve performance (again, likely un-noticable).
My knowledge is limited to automotive applications, but all the same theory and techniques still apply to smaller motors.
red2blue
New Member
Are you talking about a free flow exhaust?
Remove oem resonator...replace with a straight pipe?
I made my own for about $4.
There is a loud resonance between 3-5K rpm. No increase in performance.
It does sound....meaner...when running wide open though. And you will have more room in the hull for an external intercooler.
sporsterjoel
New Member
+1
I removed it and made my own frreflow exhaust. bought all the parts here http://www.cxracing.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=CXR&Category_Code=PIP275 you need 2.75 pipes, clamps & hoses. I use L bend and a 90 deg bend. Removing it you wont see alot of gain in topend but may see better throttle response.
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Though I can't really answer your question, I am curious as to why you would want to bypass the resonator. This component is suppose to increase engine performance.
Hi, are you referring to the resonators on the 2-stroke? I have the 3D 782cc, so removing the resonators on my 3D will affect the performance?
I had the same problem with the meltdown exhaust and after reading your comments I have found a blockage of sand in the exhaust nipple. It is working fine now bout some of the resonators and rubber pipes got meltdown so i have bypassed it (see photo)
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