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Discussion Starter · #1 ·
Has anyone insulated the engine cowl? I'd like to find something to use as insulation that will hold up to the heat and vibrations. Something in an aerosol would be ideal. Anyone try it?
 

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Dynamat from crutchfield the hoodliner version was $69.99. I was under the impression the the engine cowl already had some engine supression material in it?

I will be taking the UTV to the spray in bedliner shops to have the bed, fender wells and the portion of bed right behind the seats sprayed.

That's my first step. Second is the Dynamat in the engine cowl that doesn't already have the factory insulation.
 

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Will bed liner stand up to the heat on the front panel of the box. I know mine gets so hot because of the exhaust that you cant touch it
 

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Discussion Starter · #6 ·
The cover does have a supression material, but it's patched in. There is lots of area with no coverage. The dynamat looks like it would work well, if you could get good coverage. I've already covered the front of the bed with bedliner. I've noticed some improvement at lower speeds. I'm going to stop by an audio shop today to see what they might have. Thanks for the replys.
 

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There is a Hust Kit make by One Bad Rhino. Also, one guy posted that he removed all the plastic from his bed. The removed his bed and used one of the roll on liners inside and out. After reinstalling the plastic. He reported the that this reduced vibration greatly reducing the noise.
 

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I used dynamat on mine. Helped some but not a large amount. I did the inside of the cowl as well as the front of the bed(facing the cab) This really reduced the bed vibrations resonating in the cab.
 

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Discussion Starter · #9 ·
I decided to try using the rubberized undercoating you can find almost anywhere. It kind of turned into a cluster f**k but in the end turned out OK. I just took it for a spin and it did seem to help some. If anyone is thinking of going this route, PM me first and I'll save you some grief. Thanks for the replies!
 

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ear plugs
I wear ear plugs a lot when I am driving the Rhino. It scares the **** out of me when I take them out. It sounds like it is going to explode!
 

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Discussion Starter · #14 · (Edited)
Please go ahead and post for all to read what your experience was with the bed liner. Brand?
I used the Bondo brand rubberized undercoat from Home Depot, but Ace and Walmart had other brands...same stuff. What I liked about it over bedliner is they advertize that they reduce noise.
Removing the old felt liner was easy, it just peeled off in one piece for each side. After cleaning it with soap and water, I roughed up the surface with a wire brush in my drill. That was quite easy too.
I had never worked with this stuff so I didn't know what to expect. It comes out almost red, and bubbles when it lands on the surface. It turned black when it dried, and left a real uneven blotchy coat. I let that dry and sprayed on another coat. (I figured if a little is good, a lot is better, right?) I let that dry over night. The next day I used spray-on adhesive to re-apply the felt. It wouldn't stick at all!
I figured out the undercoating was too thick, so I used a hand held wire brush to remove the excess, and let that dry all day and over night. Now it looked a lot more uniform with a felt-like surface. It had finally cured. I could run my fingers over it w/o black residue rubbing off, but it still had a rubbery feel to it. I reapplied the felt liner and could tell right away it was adhering well.
What I came away with was... don't apply it too thick, and give it plenty of time to cure.
The under coat was about $5 ,and I already had the glue, so I think it was worth it. It definitely muted the engine noise some. Now that I know the characteristics of the stuff, I'll use it again. Hope that helps!
 

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Coat your bed in linex or herculiner from walmart. It will ease the pain on the ears.
 

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Discussion Starter · #17 ·
Good information, Thank you. What is the "Felt" mentioned? Is this something I will find when I remove the plastic panels?
The felt is the factory insulation. It's a stamped "peel and stick' piece. It hardly offers complete coverage, but I figured it could only enhance the undercoating.
The entire project is pretty easy if you avoid the mistakes I made. Even taking off the excess with the wire brush only took a few minutes. It's not the ultimate fix, but I think even the moderate improvement was worth the time and money. Good luck!
 

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I sell custom acoustical fiberglass sound absorbing blankets for rhinos. They are 15" wide and 5' long. They go underneath both seats and over the engine underneath the engine cowl. The blankets resist heat, abrasion, oil, grease, dirt, moisture, and most solvents and chemicals. They are made of quilted fiberglass 1" thick with vinyl-coated fiberglass cloth on both sides. I have one on my 08 rhino 700 and it made a big differnce with cab noise and also heat. I also line-x the bed including the front of it and the combination makes a big difference. The blankets only work on fuel injected rhinos due to the air intake on the carb models. Let me know if you are interested.
 

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Discussion Starter · #19 ·
I sell custom acoustical fiberglass sound absorbing blankets for rhinos. They are 15" wide and 5' long. They go underneath both seats and over the engine underneath the engine cowl. The blankets resist heat, abrasion, oil, grease, dirt, moisture, and most solvents and chemicals. They are made of quilted fiberglass 1" thick with vinyl-coated fiberglass cloth on both sides. I have one on my 08 rhino 700 and it made a big differnce with cab noise and also heat. I also line-x the bed including the front of it and the combination makes a big difference. The blankets only work on fuel injected rhinos due to the air intake on the carb models. Let me know if you are interested.

Could it be modified for the carb models? I'd be interested.
 

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Talk to the guy at http://www.secondskinaudio.com/ he told me about vibrations and how to get rid of them. I did my whole rhino and it is much better. Bedliner material is not designed to get rid of vibration only protect you bed. They make a material to get rid of the vibration of your bed that worked great for me. This guy is very knowlegeable about noise reduction. I would call him.
 
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