HOW TO: Reinforce your Rear Lower Control Arms. - Focus Fanatics
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Old 05-13-2008, 08:41 PM   #1
honhon
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HOW TO: Reinforce your Rear Lower Control Arms.

Well... ive gotten a few questions about how my rear LCA's are modified, and reinforced.

First let me say that i reinforced them because i was originally running the Steeda 28mm rear bar, but didnt like it so i switched to the progress 22mm rear bar.

Lets get started, here are pictures of a stock rear, zx3, zx5 and zx4 rear LCA




those are 2 pictures i took today of my stock OEM LCA's that have been sitting in my locker at work for about 2years now... they only have about 5k miles on them... i dont know if i want to sell them, or modify them, so if you are interested, but not gonna low ball me, PM me..

Heres a quick note on my write up:

what ford did i will use BLUE

and what i did i will use RED

in the pictures below.

So for the writing part of what i did....

but first alittle backround... through SEARCHING on focusfanatics.com, i found that the SVT focus has a reinforced rear Lower control arm... because the rear and front bars are bigger sinse everyone knows the SVTF, is fords little gift to the sport compact world...

but anyways... the reinforcement that Ford did was, they had a piece of straight stock steel welded to the top of the LCA around the endlink hole. it is about 2inches wide by 1inch long and about 1/8th inch or slightly thicker.

heres a quick illustration:



So... what i did... was i talked with Mike at hilbish and aquired the part number for the SVTFocus Rear LCA's, and i ordered them from my local ford dealer across the street... and when i ordered them, i got 2 out of the last 4 in the contry at the time... I dont know if they are still making the "reinforced" models, so if you want just the SVTF arms, give mike a call and check..


so when i got the SVTF rear LCA's i sanded the inside of the arm down, and then cut a piece of straight stock steel the same size as the plate ford had welded on top of the arm, and welded it to the inside of the arm... like so:



So basically, i just coppied the what ford had did to reinforce the LCA ontop, and did it on the inside...

because if you have seen a broken rear LCA, you'll note that it cracks in a straight line with the endlink hole.

If i were to reinforce it more, i would weld a pice of flat steel on the front and rear of the LCA about 1inch wide and 6 inches long...

but i feal my idea is pretty good and doesnt add too much weight... plus... how many people run the 28mm bar? i have my reinforced SVTF arms on and am only running a 22mm, lol, but i am planning to throw an H&R front and rear bar within the next year.

If you have questions and/or comments please post them... i talked with a friend earlier tonight and he said hes gonna post his idea on reinforcing the arms... so there will be more pictures...

and if you have an idea you want to share, by all means please post it!






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Old 05-13-2008, 10:38 PM   #2
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Sound great man! This should be a sticky I think.

Instead of welding could one use a big washer or two to help distribute the stress more I wonder. One on top and one on bottom.
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Old 05-13-2008, 10:42 PM   #3
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welding would be better due to welding actually "adds" material and is solidly mounted wheres a washer could move and bend.
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Old 05-13-2008, 10:52 PM   #4
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This is true. Thanks for the write-up.
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Old 05-14-2008, 08:48 AM   #5
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Added to the 'HOW TO ARCHIVE'.........
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Old 05-14-2008, 09:07 AM   #6
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daily bump. i know some people are wondering about this.
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Old 05-14-2008, 09:09 AM   #7
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Quote:
Originally Posted by honhon View Post
daily bump. i know some people are wondering about this.
Hey i took 6 pictures of the lca i did last night just have to learn how to upload them.
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Old 05-14-2008, 09:42 AM   #8
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If you run the 28.6 mm bar, you should also upgrade the front to the H&R 24mm at the same time, plus add front & rear stress bars. That way you reinforce the car top to bottom front to rear. My SVTF has that set up over a year 10k city miles later with a lot of hard cornering with sticky tires, no problems.
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Old 05-14-2008, 09:43 PM   #9
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The strut bars have no effect on the suspension system whatsoever and don't decrease suspension travel at all. It is for chassis stiffening which quickens the car bodies response to turns and such.
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Old 03-02-2009, 01:48 PM   #10
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No pics? =(
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