lca's causing a poping/clunking noise
11-29-2006, 01:01 AM
#11
3rd Gear Member
Join Date: Mar 2006
Location:
Posts: 604
RE: lca's causing a poping/clunking noise
My LCA's were clunking too, then caused a very loud and obnoxious squeaking noise. I greased the polyutethane bushing on the control arm and it all stopped. And I continue greasing them every once in a while.
11-29-2006, 09:45 AM
#12
Join Date: Oct 2006
Posts: 17
RE: lca's causing a poping/clunking noise
Would the same theory work if the clunking noise was coming from the front suspension? I recently lowered my car with the Eibach pro kit and 2 weeks later, the clunking noise started. I came back from the shop yesterday and they told me there was nothing wrong with the install. They also mentioned that Ford had a technical service bulletin on this problem. Does anyone know how to find such information???
11-29-2006, 12:45 PM
#13
1st Gear Member
Join Date: Sep 2006
Location: Florida
Posts: 61
RE: lca's causing a poping/clunking noise
Most of the aftermarket LCA's seem to have the torque spec at between 85-100 foot pounds on the axle side and 90-110 at the chassis side. I split the difference at 95 ft lbs on all 4 bolts under the full weight of the car which seems to be fine. If anybody knows better, do tell.
ORIGINAL: 05 Ricky
What is the recommeded torque spec's on the LCA?. From Ford, they recommend 129 ftlbs and that seems a bit on the tight side.
ORIGINAL: fl_799
Torque box is just the control arm mounting point on the chassis side. The point was made that an improper install could pull or damage the mounting point.
Measuring pinion angle is easy. You need an angle finder from Lowe or Home depot. There is tons of info on how to do this on this forum and all over the internet.
BTW, my issue is solved. My LCA's were way under torqued from the shop that did the install. I tightned all 4 bolts to 90 foot pounds and everything is good to go. As one could imagine, the pops and clunks going over bumps are a thing of the past.
Torque box is just the control arm mounting point on the chassis side. The point was made that an improper install could pull or damage the mounting point.
Measuring pinion angle is easy. You need an angle finder from Lowe or Home depot. There is tons of info on how to do this on this forum and all over the internet.
BTW, my issue is solved. My LCA's were way under torqued from the shop that did the install. I tightned all 4 bolts to 90 foot pounds and everything is good to go. As one could imagine, the pops and clunks going over bumps are a thing of the past.
12-06-2006, 11:13 PM
#14
6th Gear Member
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
RE: lca's causing a poping/clunking noise
If anyone has clunking noises when shifting try adjusting the pinion angle in small increments and test drive the car each time. You can't just set it at -2 degrees and think you're good to go. Not all cars are the same. By the way i think mines at -2
I'm talking about lowered vehicles of course.
I'm talking about lowered vehicles of course.
12-09-2006, 05:16 AM
#15
3rd Gear Member
Join Date: Aug 2005
Location: New Braunfels, TX
Posts: 882
RE: lca's causing a poping/clunking noise
When I installed all my BMR stuff I torqued down to OEM specs. About a week later my passenger side LCA started clunking. I went back on the lift at full weight and re-torqued everything back to OEM. Almost all the bolts had loosened up in 1 week. I was going to check everything anyway, but that LCA beat me to it. Everything is at OEM spec now and no problems in the last 6 months.
12-09-2006, 10:53 PM
#16
1st Gear Member
Join Date: Sep 2006
Location: Florida
Posts: 61
RE: lca's causing a poping/clunking noise
If I could do it all over again, I'd blue loctite every single bolt I touched during the initial install. If I did that the first time around, I would have saved hours chasing down clunks from the UCA, LCA's and the panhard bar which lost their torque setting. If anybody reads this, take my advice......use blue loctite and a good quality torque wrench.
uca bracket upper 129ft lb (center under seat), 2 lower bolts under car 85ft lbs
uca body side 129 axle 129
lca's 129ft lbs (fr and rear)
uca bracket upper 129ft lb (center under seat), 2 lower bolts under car 85ft lbs
uca body side 129 axle 129
lca's 129ft lbs (fr and rear)
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