how to install rear lower control arms...? - Ford Mustang Forum
 
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post #1 of 11 (permalink) Old 05-08-2010 Thread Starter
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how to install rear lower control arms...?

hello,
I was wondering how hard it is to install rear lower control arms
in a mustang 5.0 car rear end. Also, could anyone explain how those
are joined to the 8.8 / axel? A diagram may help me understand how
its all connected. In other words, if a car has no rear lower control arms,
what would be required to install a set?
thanks for any help/info!
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post #2 of 11 (permalink) Old 05-08-2010
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they are bolted to your rear end. jack up your car and look at your rear end. you'll see two long arms coming from the body that bolt to your rear end and on top of them you'll see 2 coil springs those are your lower control arms.

your car has them already, its getting a better set that people do, not install them on a car with none, get what i mean? they are used to hold your rear end in place as well as the little ones on top (the uppers) different style upper and lowers can help reduce wheel hop and plant your rear more firmly on launches.

the only thing that may be a pain is trying to get the bolts out of the end that goes thru the rear subframe. if those are rotted out or the bushings are seized to the bolts it'll take a torch to get them to budge. you may be lucky though and the bolts will come right out. in which case you'd have to support your rear subframe, drop your shocks and lower the rear end some to take the springs out.. then once those are out support the rear end with some more stands and remove the retaining bolts for each control arm. i've done plenty of rear end swaps in my driveway, definitely helps to have a helper 4 jack stands and a nice jack and a little torch just in case.

Last edited by kyle89gt; 05-08-2010 at 10:49 PM. Reason: typo
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post #3 of 11 (permalink) Old 05-08-2010
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post #4 of 11 (permalink) Old 05-08-2010 Thread Starter
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hey... thanks for all the install info. I think that helps me get a good idea of whats involved.

"your car has them already, its getting a better set that people do, not install them on a car with none, get what i mean? they are used to hold your rear end in place as well as the little ones on top (the uppers) different style upper and lowers can help reduce wheel hop and plant your rear more firmly on launches. "

actually, it might sound strange... but the car I might be doing this to is a roller car and the only thing besides the engine and trans its missing is the rear control arms. I only got to talk to the owner one time earlier today and I think he said he had removed the rear lower control arms arms. The car in question used to be a drag car, and it was just about to get parted out, when I found it for sale... So I think the only thing gone on it is the hood and rear control arms... so if that makes any more sense now that I explained what I want to do better... does that change the way I'd go about installing the rear control arms? does the rear have an upper and lower or only lower control arm? thanks...
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post #5 of 11 (permalink) Old 05-08-2010 Thread Starter
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RLG, just saw your post...
I'll read that now. Thanks for the link.
I also found:
How to Install the Rear Control Arms on a Mustang | eHow.com
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post #6 of 11 (permalink) Old 05-09-2010 Thread Starter
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OK, I've studied RLGs link and read it over a couple times... I think it makes sense. I I still need to see the photos of the rear end on the car in question before I can be sure how much parts are apart on it. but If the entire rear end is out... I'd have to figure out where to start to put it together. I guess you'd put one piece on at a time in a cronological order... i don't know if the entire rear end can be together except for the lower control arms?

if so, it looks like it could be as easy as two bolts in each control arm on each side... or is there no way the rear end can all be holding there without lower control arms?

I'll have to ask the owner some more about the rear condition... from those diagrams in RLGs link that helped a lot... I think i could figure out how to put it together if all its missing is the LCAs...

For drag racing, should I get some adjustable LCAs or a stock pair or something different or would it matter on the entire suspension plan as well as to what LCA to choose. Since the car in question used to be a drag car, i'll have to see what suspension is in it... its just a roller so i don't know what to expect.
thanks for the advice so far, i hope to get some photos of the car tomorrow...
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post #7 of 11 (permalink) Old 05-09-2010
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i found out that once you get the rear end up on jack stands and the axle is hanging using two jacks makes it a breeze. first you take one jack and jack up the front of the pumpkin just barely lifting it. then using another jack put it under the lower control arm under the attaching bolt on the axle. then loosen the nut and the bolt should come out with a few knocks. the jack then keeps it from exploding because of the spring. then lower your jack under the control arm and you safely got the tension off it you can unbolt it from the front. and if for some reason the axle did move you and rotate it forward or backward by using the jack under the pumpkin. (you'll see what i mean when your under there) hope that helps. just changed the rear springs today and went through this exact thing.

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post #8 of 11 (permalink) Old 05-10-2010 Thread Starter
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91Phoenix, thanks for the tips.. i appreciate you telling me that way to do it.
i understand what you mean..
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post #9 of 11 (permalink) Old 05-11-2010 Thread Starter
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hey... I found some pretty cheap control arms...

do these look like the rear upper and lower arms or just one or the other?
I don't have much experience, only what I've seen in other photos of the
aftermarket ones. These look stock, but would they work in the 92 coupe?

Mustang Rear Arms

thanks
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Those are toasted! Cheapest I would go is these
Summit Racing SUM-790000B-W - Summit Racing Street & Strip® Upper and Lower Control Arms - Overview - SummitRacing.com
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i just did mine for the first time...i picked up some bbk gripp upper/lower control arms. its pretty straightforward. and 50resto has pdf file instructions for these as well as other how to's for their products that were submitted by buyers or manufacturers...

for added safety, instead of putting your wheels off to the side, i would throw them under the car near the stands for extra peace of mind, and dont forget to chock the front wheels, and be very good with bringing your floor jack down slowly since one jack varies from another...


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