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-   -   Helicopter noise (http://www.jeepgarage.org/f89/helicopter-noise-78189.html)

Diezel134 08-12-2014 02:57 PM

Helicopter noise
 
So I put a rubicon express 2.5" lift and 35" tires. When driving u know that sound if u only open 1 window in cars or suv's like a helicopter until u open another window. I have that sound all the time... What can I do? I also haven't replaced the rear tire holder.


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Diezel134 08-15-2014 04:57 PM

Re: Helicopter noise
 
Anyone gonna respond... Come on


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Charlie23 08-15-2014 05:02 PM

Re: Helicopter noise
 
I'm following this one. Interested in what folks have to say. Wish I could offer some insight, but I got nothing. 😐

Diezel134 08-15-2014 05:05 PM

Re: Helicopter noise
 
Thanks...


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Grit 08-20-2014 03:33 PM

Re: Helicopter noise
 
From what I've read, it might be your hard top flexing enough to cause the fluctuation in pressure. It happens more with stiff suspension or out of balance tires. I test drove a couple of hardtops that did this. They had been sitting in the Phoenix sun for a while and had flat spots. One was inflated too high and it caused that low speed buffeting. Have someone push up on the hard top while driving to see if it goes away. You can also try lowering the tire pressure a couple of #

Gr868 08-27-2014 03:22 PM

Re: Helicopter noise
 
If the noise is coming from outside the Jeep, check to make sure all of your lug nuts are torqued properly.

Diezel134 08-27-2014 03:25 PM

Re: Helicopter noise
 
Thanks guys


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jeepster23 08-31-2014 04:55 PM

Re: Helicopter noise
 
Sounds to me like the tires you put on it. Did you put a real aggressive tread tire on it after the lift?

Gr868 09-05-2014 06:50 PM

Re: Helicopter noise
 
Diezel134, any luck finding the noise?

Vinicio 01-05-2015 09:53 PM

Re: Helicopter noise
 
Look up Helmholtz resonator

mcraft 01-06-2015 12:37 PM

Re: Helicopter noise
 
Quote:

Originally Posted by Diezel134 (Post 1066011)
So I put a rubicon express 2.5" lift and 35" tires. When driving u know that sound if u only open 1 window in cars or suv's like a helicopter until u open another window. I have that sound all the time... What can I do? I also haven't replaced the rear tire holder.


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Hardtop or soft top? If soft top, it doesn't take much to change air flow and create turbulence. I put a bug shield on and I thought someone was on top with a bat, beating on it. I had to take it off. Air flow is a strange thing. I know everyone says it doesn't matter with a Jeep, it's a just a big ole square brick going down the road. They are wrong, it matters.


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