Just installed lca & uca drv shaft ex. - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 10-07-2010 Thread Starter
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Just installed lca & uca drv shaft ex.

I have always read that lca ride a little rough. this car feels a lot rough to me . Is that normal ? it sounds as though there is slack at the lca . Feels as though I can feel the rear end . Also it could be the single peace drivesft just in stalled. If the adj. uca isnt just right can that kick out some vibration and feel it through the lca ? Need some help Todd


2007 GT auto
HO Whipple with 10psi
GT500 fuel pump
BMR lower control arms
BMR relocation brackets-3.73grs
445rwhp 419rwtq
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post #2 of 9 (permalink) Old 10-08-2010
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Were the LCA bolts torqued to spec? 129 ft/lbs is a lotta crankin'. Did you get new bolts as per Ford? I've heard differing stories on reusing the bolts. Some say it's no big deal, others swear you'll get clunking if you don't get fresh hardware. While offering a noticeable improvement in handling, I don't know if I can tell any increased roughness in the ride with my J&M parts.


2007 Vista Blue GT Convertible
More mods than are readily apparent and that my wife knows about
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post #3 of 9 (permalink) Old 10-08-2010
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Also make sure you torque down those bolts while the suspension is 'loaded' or you may risk getting some popping and stuff going on and FWIW, Ford specifies new bolts every time for anything suspension related. YMMV.

For your 1PC drive shaft though I don't personally have one (still running the 2-piece). From what I've read on the matter; Auto's do well with about -1 or -2 degrees pinion angle where the manuals like -3 to -4. I know if it's off you'll get vibrations. Again, just what I've read. I have no personal experience with the 1PC drive shafts so take it for what it's worth.

-HD
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post #4 of 9 (permalink) Old 10-08-2010
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Who did the install? Which LCA exacty is it? Spherical/heim ends are noisy.
post #5 of 9 (permalink) Old 10-08-2010 Thread Starter
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I used BMR, the black set For lower and upper . Yes I reused OEM bolts . The mechanic said that on Monday he will adjust the uca from 2 degrees to 4 degrees , he said that when the driveshaft is right then the vibration will go away. But there is a clunk when going back and forth and I'm ordering a set of bolts for the lca's today. If there is slack were the oem bolt is then that would be a big source if vibration .

2007 GT auto
HO Whipple with 10psi
GT500 fuel pump
BMR lower control arms
BMR relocation brackets-3.73grs
445rwhp 419rwtq
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post #6 of 9 (permalink) Old 10-08-2010 Thread Starter
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finding a set of bolts not so easy. does anyone know where I can buy a set ?

2007 GT auto
HO Whipple with 10psi
GT500 fuel pump
BMR lower control arms
BMR relocation brackets-3.73grs
445rwhp 419rwtq
toddan is offline  
post #7 of 9 (permalink) Old 10-09-2010
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If you have the heim jointed LCA's then you are going to have noise like when you give and left off gas. That's why I am asking which ones you have. Goto BMR's website and see what kind of ends they have. If it's poly bushings on both ends it shouldn't be your LCAs.
post #8 of 9 (permalink) Old 10-09-2010
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Quote:
Originally Posted by toddan View Post
finding a set of bolts not so easy. does anyone know where I can buy a set ?
May be one of those you have to go straight to Ford and get. I stripped out an exhaust flange stud once and that's what I wound up having to do. Call your local dealtership and talk to the parts shop. I'm sure they can help you out if nothing else.

-HD
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post #9 of 9 (permalink) Old 10-09-2010 Thread Starter
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I bought them in January and just installed them and they dont make that lac anymore but these look to be the same. If this works
Click Here For Larger Image
Lower Control Arms, Billet Aluminum, Polyurethane Bushin

2007 GT auto
HO Whipple with 10psi
GT500 fuel pump
BMR lower control arms
BMR relocation brackets-3.73grs
445rwhp 419rwtq
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