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#1
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are Poly bushings noisy?
I was told that there is a trade off with poly. Better performance but at the cost of more transmitted road noise. My rubber bushings on my sway bars are shot. Comments please.
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#2
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Noisier because of their increased durometer (hardness) and they squeak and require periodic lubrication.
Todd
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Down to none |
#3
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They do squeak a bit in colder weather, but usually only on larger bumps. I haven't notices an increase in road noise, but I have noticed that square-edged road bumps are a felt a little more in the front suspension.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#4
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I'm having a hard time imagining why firmer sway bar bushings would transmit more road noise. If anything, it seems the reverse would be true. And stock bushings can be noisy. Recently, my rear bushings (which appear to be in perfect shape) started binding the sway bar, which would build-up tension that released with a pronounced thunk when the car's weight shifted. I shut 'em up with bearing grease (and have since learned that the prevailing wisdom holds that to be a bad idea).
dcb |
#5
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I haven't noticed any additional noise with poly swaybar bushings in my other cars.
- Jim |
#6
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Quote:
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Matt Locker Link 2015 BRZ Limited 6MT 92 Ebony LS-L ECUtune Stage2av1, Z32 MAF, 370cc injectors, TomsSVX intake, BontragerWorks 22mm RSB #003, HID Hi and Lo beams, OT endlink and bushing mods, PWR Aluminum radiator, Harvey's QC shift kit, 2.5" flowmaster 80 exhaust, 17" Michelin Pilot Sport A/S, Poly sway bar bushings, Slotted Bradi rotors, AFBeefcake powdercoated calipers, 97 grill, and a huge set of air horns. 300,000 miles and counting 92 Ebony LS-L. ecutune stage1v4, motorsport 1pc pulley. Garage Queen - sold to Dad in upstate NY 155,000 miles 19 Subaru Ascent Premium - -Hers !. 89 DL 4x4 little red wagon - a.k.a. The immortal suby. 275k R.I.P. |
#7
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Energy suspension and others usually warn that poly bushings will be noisy (squeeky) in cold climates. Not a problem if you live down south....or at the gates of hell in south-central Texas.
I do know what is noisy.....stock bushings that have broken into three pieces. Finally got around to changing them with new stock bushings.....much better. Still plan on the poly upgrade. If you're gonna grease rubber/poly suspension bushings make sure you use a silicone grease. Regular petroleum based grease will eventually degrade the bushings. Also, why is it that subaru designed the engine to develop a leak so it drips motor oil all over the swaybar bushings? Maybe designing in some work for the dealers? |
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