NEW! Polyurethane Rear Control Arm Bushings! - TCCoA Forums
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post #1 of 116 (permalink) Old 07-25-2005, 08:41 PM Thread Starter
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NEW! Polyurethane Rear Control Arm Bushings!

Maybe I'm the first but who cares. For along time I have heard that nobody makes a polyurethane replacement for the Lower Rear control arms! whether this is info is true or not I'm here to tell you that there is!



The PROTHANE 99-04 Mustang Cobra IRS C-ARM Bushing Kit #6-311-BL uses the same size bushings as the Thunderbird/Cougar/MarkVIII

I just pressed out mine and they are exactly the same!

Just thought I'd share that info with the rest of yah.

Also just a FYI I didnt know the Mark VIII used a Tubular rear sway bar as compared to the Solid bar the Tbird has,, savings of almost 5-10lbs!

Brad M
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post #2 of 116 (permalink) Old 07-28-2005, 03:47 PM Thread Starter
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So did anyone know about this or knowone cares
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post #3 of 116 (permalink) Old 07-28-2005, 05:49 PM
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I didn't know,so...thanks for the notice!
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post #4 of 116 (permalink) Old 07-28-2005, 07:20 PM
 
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Its good info I made note of but not sure what there is to say about it.

I've recently been looking at all the bushings under my car to see what shape they are in but don't have any immediate plans to tear the suspension apart and start replacing stuff!
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post #5 of 116 (permalink) Old 07-29-2005, 12:42 PM Thread Starter
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Just didnt know if it was a good find or not,, but I'll tell yah what. I spent about $67 for the prothane kit for the cobra that these came in, all the rest of the bushing dont fit anything else.

I wouldnt be suprised that this info found itself on a MN12performance or SCP board being sold for $120 now.

Was just glad that I got lucky and that they fit, Prothane was no help as they wouldnt give me any dimensions of the bushings in the kit before I ordered them.

Brad
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post #6 of 116 (permalink) Old 07-29-2005, 01:04 PM
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Thanks for the info! Although, I thought the mark 8 and t-bird used different bushings that were not interchangeable. I could be wrong though, it's happened before.

I'll have to check those out.

Chris
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post #7 of 116 (permalink) Old 07-29-2005, 01:25 PM
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I found them here for $80

http://www.maximummotorsports.com/irsarmbushings.asp

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post #8 of 116 (permalink) Old 07-29-2005, 04:07 PM
 
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Hmmm...looks like i know what I will be doing this winter.
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post #9 of 116 (permalink) Old 07-29-2005, 11:41 PM
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Your comment on the rear swaw bar may indeed be true, but neither of them will handle as good as the upgraded ADDCO pieces. They make a big difference in the handling and stability of the car. Just an FYI. But thanks for the heads up on the bushings. I'll have to check those out next time I tear the rear apart.

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post #10 of 116 (permalink) Old 07-30-2005, 02:24 AM Thread Starter
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Check out: http://www.laurelmountainmustang.com $63.95!

for better pricing and awesome service and fast shipping!


Wanted to add: I also agree that a ADDCO bar will improve the handling, but my main concern is straight line performance and taking as much weight off this heavy car as possible. Besides this car stock would outhandle anything I have now (mustang/ranger)

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post #11 of 116 (permalink) Old 08-01-2005, 04:24 PM
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If i don't sell my car, count me as another person doing this this winter. Bet his would be another thing that helps dampen wheel hop too. Great find, indeed. Way to gamble on them fitting.

As for sway bars, I'm running the big ADDCO's which are REALLY heavy. I've been contemplating pulling them and seeing if I could find some place that could bend some chromo tubing to match it. I bet 20 pounds could be saved from each 1 3/8" bar without losing much stiffness (as any engineer knows) if a tube could be bent tight enough to fit in there. Probalby not possible or someone would already be doing it.

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post #12 of 116 (permalink) Old 08-01-2005, 06:29 PM
 
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it's 57.50 at Laurel must have had a price drop.
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post #13 of 116 (permalink) Old 08-01-2005, 06:32 PM Thread Starter
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Price is getting better every day!
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post #14 of 116 (permalink) Old 08-01-2005, 08:53 PM
 
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Just for the record, the ADDCO 1-1/4 sway bar was reported to make the ride noticably stiffer but not as stiff as the 1-3/8's. I put the 1-1/4 in a couple of weeks back & the handling difference is dramatic. Sliding around corners is a blast & it's not stiff at all. I can only imagine how much fun the 1-3/8's bars are. But back to the start, thanks for the info on the rear bushings. I did hear that L.M.S. sells a kit but I do not know how much but the entire kit is for the Mark or MN12 frame. I still have to put my KYB's in the front before I move on to the next projects but as was mentioned above all the supports & bushings need to be refreshed. Ed
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post #15 of 116 (permalink) Old 08-01-2005, 09:17 PM Thread Starter
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What is L.M.S?
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post #16 of 116 (permalink) Old 08-02-2005, 12:14 AM
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lincoln motorsports i believe?

1 question, can the rear bar being slap on just like that with the correct bracket without stiffening the subframe? or the subframe should be weld up before putting it in?

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post #17 of 116 (permalink) Old 08-02-2005, 06:05 AM
 
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If you go over 1-1/4", it is recomended you brace the subframes as well.
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post #18 of 116 (permalink) Old 08-02-2005, 08:44 AM
 
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Lincoln Motor Sports. Recommenations for subframe supports, i.e. where? Ed
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post #19 of 116 (permalink) Old 08-06-2005, 09:53 PM
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awesome now we just need poly replacements for the mark viii LCA's at the outter side where it bolts to the spindle. I have a set of MN12 bushings here and they appear to be close but I dont know if they'll fit. I would remove my current mark bushings and compare them but I greatly fear destroying them upon removal, and the only way to get replacement bushings for those is by buying an entire new LCA from Ford.
-Thomas

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post #20 of 116 (permalink) Old 08-08-2005, 08:54 AM
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Quote:
Originally Posted by Thomas
awesome now we just need poly replacements for the mark viii LCA's at the outter side where it bolts to the spindle. I have a set of MN12 bushings here and they appear to be close but I dont know if they'll fit. I would remove my current mark bushings and compare them but I greatly fear destroying them upon removal, and the only way to get replacement bushings for those is by buying an entire new LCA from Ford.
-Thomas

Poly spindle bushings have been available for a while now. I have them on my car. Very easy to install.

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post #21 of 116 (permalink) Old 08-08-2005, 11:55 AM
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yeah spindle bushings. I have those sitting on my desk. I'm not talking about the spindle bushings, I'm talking about the outter Mark LCA bushings.

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post #22 of 116 (permalink) Old 08-08-2005, 11:25 PM
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Quote:
Originally Posted by Thomas
yeah spindle bushings. I have those sitting on my desk. I'm not talking about the spindle bushings, I'm talking about the outter Mark LCA bushings.
There aren't any outer rear LCA bushings....only spindle/knuckle bushings. Unless you are talking about the inner bushings...which is what I thought this was.

Russell

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post #23 of 116 (permalink) Old 08-08-2005, 11:46 PM
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oh shoot, I was thinking oppositely. I guess it's been too long since I was under the rear suspension haha. Well in that case, the LCA bolts on the mark viii are longer, which I would then assume means that the bushings are longer. Do you think these will fit in Mark VIII LCA's?
-Thomas

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post #24 of 116 (permalink) Old 08-09-2005, 12:33 AM
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okay so I just went out and compared the new MOOG K8658 bushings for the MN12 to my Mark VIII bushings and they're the same length, so I dont know why people say they're longer but they're not. So the bushings for the mn12 and the fn10 are interchangable. So these should work on all LCA's. And the MOOG bushings are 20 bucks a side, so these poly's are about the same cost.

I've also been looking on the net, it looks like these poly's are made by Prothane, part # 6-311.

-Thomas

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Last edited by Thomas; 08-09-2005 at 01:20 AM.
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post #25 of 116 (permalink) Old 08-09-2005, 02:59 PM Thread Starter
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Quote:
Originally Posted by SplitPortBird
The PROTHANE 99-04 Mustang Cobra IRS C-ARM Bushing Kit #6-311-BL uses the same size bushings as the Thunderbird/Cougar/MarkVIII

Brad M

Its what I said above
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post #26 of 116 (permalink) Old 08-09-2005, 08:26 PM
 
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I think Thomas has lost it....
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post #27 of 116 (permalink) Old 08-09-2005, 09:29 PM
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I am going insane. I think its time for a vacation haha. Sorry for the meaningless babble I posted above.

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post #28 of 116 (permalink) Old 08-22-2005, 07:14 PM
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so does anyone make replacement bushings for the inside where the Lower and Upper control arms meet the subframe?

is there even a bushing in there? i haven't looked and i don't have my book on me. thanks.

essentially, the camber of my rear wheels is way too negative and i need to fix it.
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post #29 of 116 (permalink) Old 08-22-2005, 07:19 PM Thread Starter
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The bushings in the pic above ARE for the the lower Inner control arms, nobody makes a UPPER INNER,, mainly for the fact that last time I looked it was close to be a urethane part and it has a ecentric built in for camber
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post #30 of 116 (permalink) Old 08-22-2005, 10:04 PM
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what picture above? inner lower control arm bushings, right?
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