Sounds over 85 dB can cause hearing loss after long or repeated exposure.

Yamaha jet boat noise. I mainly want to reduce noise around 7000 to 8000 rpm. This is a dangerous level of noise. Some noisy boats hit the 100s.

I am considering buying the Zulu ANR Headphones for a Yamaha jetboat. IMHO what you were hearing was the play of the components rattling you dont hear it in the water because the impeller the bearings shaft etc are all under load while idling in the water. According to Boating Magazine boat engine noise can reach over 100 decibels dB.

Those include thicker sound insulation in the engine hatch and deck improved isolation of the engine bay from the cockpit. In the past a little extra noise from a jet boat was the balance struck for all the other advantages and performance of a jet boat. My 2008 SX230 in my opinion is NOT noisy.

Yamaha has made a combination of engineering changes along with the addition of large amounts of sound deadening materials and significantly reduced the overall noise in the 240 Series. The all-new 240 Series sport boats from Yamaha successfully address two performance issues long associated with jet-powered runabouts. With most boats it isnt necessary to have ear protection while youre out on the water.

Compatible with mechanical controls our Multi-Function Tiller Handle analog gauges and Command Link 354 pounds including jet pump assembly Fits 25-inch transom boats. This tick however did not go away after idleing for a while i did this since I just. It sounds very similar to my chevy silverado when I first start it up before the oil kicks in and lubes everything.

The higher the dB the less amount of time it takes for hearing damage to occur. The jet is further disadvantaged because its entire powertrain is mounted within the boat hull so part of the noise of a jet drive is the flow of water through the pump and the sound of cavitation on the low-pressure side of the impeller. JRobChicago dont get worried about the noise it will only be apparent at WOT and when youre doing 40mph across the water you wont care about it at all.