MM lca's installed....ds vibration?

steve-o · 07-17-2006, 02:29 PM

I installed my MM lca's here a few weeks ago and after I installed them I started to notice a vibration when I am driving. It is usually when I am from 60mph to about 67 or so then it goes away. Any thoughts on what is causing this or what I can do to fix it? I have steeda sport springs and kyb shocks and struts but those have been on the car for more than a year now and I never noticed a problem until after the lca's went on.
I have heard pinion angle get an alum. ds but I wanted everyones opinion here first.
Thanks

Elite130 · 07-17-2006, 02:34 PM

Subscribing. I have the same problem.

spike_africa · 07-17-2006, 02:50 PM

adjustable ones or no?

r3dn3ck · 07-17-2006, 02:56 PM

In general vibrations that occur inside speed windows are DS based and you can fix it by either having your DS high speed spin balanced, or get a balanced aluminum unit to replace it, or try clocking the DS 45 or 90 degrees from where it currently sits in relation to the pinion flange.

what kind of bushings are in the chassis end of the RLCA's? If you have sphericals with poly urethane caps, then you should get used to some vibration (more of a low frequency hum) being part of the package. Still, the DS seems like your current issue. Mine did that and replacing it with an aluminum one from Griggs fixed that.

steve-o · 07-18-2006, 09:09 AM

here is what I bought.

it has urethane bushings on the chassis end and spherical on the axle side. I guess it looks like an alum. ds is my next purchase.

07-17-2006, 02:29 PM	#1 (permalink)
steve-o Senior Member Join Date: Mar 2006 Location: Thornton, Colorado Posts: 224	MM lca's installed....ds vibration? I installed my MM lca's here a few weeks ago and after I installed them I started to notice a vibration when I am driving. It is usually when I am from 60mph to about 67 or so then it goes away. Any thoughts on what is causing this or what I can do to fix it? I have steeda sport springs and kyb shocks and struts but those have been on the car for more than a year now and I never noticed a problem until after the lca's went on. I have heard pinion angle get an alum. ds but I wanted everyones opinion here first. Thanks __________________ 2004 Mustang GT DSG...basic bolt-ons.

07-17-2006, 02:50 PM	#3 (permalink)
spike_africa Administrator Join Date: Sep 2004 Location: Orlando,Florida Posts: 7,410	adjustable ones or no? __________________ Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted WOOO HOOOO!

07-18-2006, 09:09 AM	#5 (permalink)
steve-o Senior Member Join Date: Mar 2006 Location: Thornton, Colorado Posts: 224	here is what I bought. it has urethane bushings on the chassis end and spherical on the axle side. I guess it looks like an alum. ds is my next purchase. __________________ 2004 Mustang GT DSG...basic bolt-ons.

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07-17-2006, 02:34 PM	#2 (permalink)
Elite130 Junior Member Join Date: Jun 2006 Posts: 2	Subscribing. I have the same problem.

07-17-2006, 02:56 PM	#4 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 7,014	In general vibrations that occur inside speed windows are DS based and you can fix it by either having your DS high speed spin balanced, or get a balanced aluminum unit to replace it, or try clocking the DS 45 or 90 degrees from where it currently sits in relation to the pinion flange. what kind of bushings are in the chassis end of the RLCA's? If you have sphericals with poly urethane caps, then you should get used to some vibration (more of a low frequency hum) being part of the package. Still, the DS seems like your current issue. Mine did that and replacing it with an aluminum one from Griggs fixed that.