Quieting them down.

J

johndeerefarmer

Well-known member
Jun 16, 2023
304
263
Texas
I think the way to quieten them down is either change where the vents are (maybe lower it some and point towards the back) or design some kind of baffle or muffler to put in the intake. I don't plan on going through water as high as that vent so lowering it wouldn't be a problem for me..
 
If they are infact that loud itā€™s a engineering failure. Polaris needs to fix. When mine comes in if itā€™s that bad I donā€™t be buying one. My ranger crew northstar isnā€™t loud at all. I think for this much money it better be way quieter.
 
Clayton said:
If they are infact that loud itā€™s a engineering failure. Polaris needs to fix. When mine comes in if itā€™s that bad I donā€™t be buying one. My ranger crew northstar isnā€™t loud at all. I think for this much money it better be way quieter.
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Good luck with Polaris. You better cancel yours now
 
Stick some sound deadener behind the panels against the intakes. Apparently helps a bit
 
My XP 2 arrived at the dealer this morning and I couldnā€™t wait to see it. Having seen the posts about the interior noise levels, I wanted to hear it for myself.

I just putted around the dealer lot and the noise was not unbearable; but it was noticeable. What I really noticed was the ā€œnoiseā€ was all around me. I couldnā€™t pinpoint engine noise, low and behind, the air intake, behind my left ear; rather it just seemed to be all around the cab.

I also noticed the doors have vey large flat plastic surfaces. Knocking on the door panels, I could hear and feel the door panels vibrate. Back to my audiophile days; I think Iā€™ll be looking at placing mat on the door panels first. If that helps, Iā€™ll likely do the whole interior. I donā€™t think the noise source is louder than the Rangers, I think the resonance of the interior is the culprit.

I want to see if I can reduce/eliminate the sound waves bouncing around the cab and measure the before and after. I had a Jeep with 35s that was just as noisy; I wonā€™t be broken hearted is this goes the same route. This machine is awesome and I canā€™t wait to get it on the trail
 
The big difference between the Rangers and the Xpeditions is the rpm they operate at. These Xpeditions run mostly from 4500 to 6500 rpm. Anything over 15 mph and you are at 5000 rpm or higher. The Rangers would run mostly between 3500 and 5000 rpm. On my ADV I have put sound deadener insulation in the roof and behind the seats and use a thick horse stall rubber mat from Tractor Supply over the engine on top of the existing insulation. If I run at 15 mph or less the noise is manageable. When I exceed 15 mph the noise is terrible. The noise seems to be coming from the tunnel between the seats as best I can figure. I have resigned myself that the wife and I are going to need headsets so we can talk without yelling at each other. I really like this machine. It is smooth riding, comfortable, and just a joy to drive. Almost.
 
tdeperte said:
The big difference between the Rangers and the Xpeditions is the rpm they operate at. These Xpeditions run mostly from 4500 to 6500 rpm. Anything over 15 mph and you are at 5000 rpm or higher. The Rangers would run mostly between 3500 and 5000 rpm. On my ADV I have put sound deadener insulation in the roof and behind the seats and use a thick horse stall rubber mat from Tractor Supply over the engine on top of the existing insulation. If I run at 15 mph or less the noise is manageable. When I exceed 15 mph the noise is terrible. The noise seems to be coming from the tunnel between the seats as best I can figure. I have resigned myself that the wife and I are going to need headsets so we can talk without yelling at each other. I really like this machine. It is smooth riding, comfortable, and just a joy to drive. Almost.
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The silver lining about the Xpedition noise for some could be that they can't hear their wife while they're peacefully out on an expedition LOL!
 
I pulled the belly pan on my 2 seater and looked up in the tunnel where the shifter is and it's wide open. I was very disappointed in the fact that driving around the whole center console would get extremely hot, including the cup holders. So I added some material from Eastwood that is made to insulate floors in cars. I went up as far as I could and layered it until I got it all covered. Then I covered any places that I could possibly get to like the floor area. I then went to the inside with their 1/8" foam and covered some of the panels that border exterior walls that had a very hollow sound when I tapped on them..
The results were not as much as I expected but it was definitely an improvement on sound and a huge improvement on the heat.
 
JPrince said:
I pulled the belly pan on my 2 seater and looked up in the tunnel where the shifter is and it's wide open. I was very disappointed in the fact that driving around the whole center console would get extremely hot, including the cup holders. So I added some material from Eastwood that is made to insulate floors in cars. I went up as far as I could and layered it until I got it all covered. Then I covered any places that I could possibly get to like the floor area. I then went to the inside with their 1/8" foam and covered some of the panels that border exterior walls that had a very hollow sound when I tapped on them..
The results were not as much as I expected but it was definitely an improvement on sound and a huge improvement on the heat.
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This must be your first Polaris. Ever Polaris ever built (that I know of) has the coolant lines in the tunnel. I always wrap mine with pipe foam insulation and then stick Dynamat or similar on the walls of the tunnel. Helps a lot with heat. Noise doesn't come from there. It comes from the engine itself and the intake which is up high by your head
 
Definitely not my first Polaris, but this is by far the loudest. It is the second one that has had a cab. My ranger was no where near as loud, although the cab was nowhere near as nice. I really like the layout in the xpedition. But for what this rig cost, I think Polaris could have spent a little on making the cab insulated.
 
After seeing the title of this post, I looked at the diagrams of the expedition and it looks like they put a liner in the back wall of the xp 2-seater, other models not sure, since I ordered 2-seater xp
 
NKYHUNTER said:
After seeing the title of this post, I looked at the diagrams of the expedition and it looks like they put a liner in the back wall of the xp 2-seater, other models not sure, since I ordered 2-seater xp
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Thereā€™s no liner at all on my XP 5.
 
I bought Cardo headsets, they block out the noise, you can talk to your partner and listen to music on the drive, PLUS they are wireless. They connect to RideCommand and your cell phone. Really the best solution in a noisy cabin. I used to have Rugged Radios in my RSR 1000 Turbo, but hate the headset wire connections. Cardo's are fantastic.
For a very good alternative I bought 2 Walker RAZOR Slim headset muffs on Amazon for $39. They work extremely well for what they offer. Great buy.
 

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I just purchased the rugged radios. I wanted the cardos but the though of another $500 into this rig I just couldn't justify it. The cords are a pain on the rugged radios but anything that allows you to talk to your partner and not listen to the engine screaming is worth it, including two green bean cans and some wire! šŸ˜‚
 
tdeperte said:
I just purchased the rugged radios. I wanted the cardos but the though of another $500 into this rig I just couldn't justify it. The cords are a pain on the rugged radios but anything that allows you to talk to your partner and not listen to the engine screaming is worth it, including two green bean cans and some wire! šŸ˜‚
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Totally understand on the cost of Cardo Headset, we wanted them to interface with RideCommand, cell phones, and music. I should have mention I bought for my backseat riders the Walker RAZOR Slim muff headsets, for $39 each on Amazon. They work well as cutting out the noise, do a great job and very cost affective.
 
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