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Upper arm brace..Front or back??? |
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mrblatzman
AMC Addicted Joined: Oct/01/2008 Location: Alabama CSA Status: Offline Points: 2155 |
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Posted: Aug/09/2016 at 3:00pm |
On the fleet and most later production upper control arms there is a extra brace welded onto the bottom side...Making the arms now a distinct left and a right...Does the arm go on the car with the brace towards the front or the back of the car?? Thankyou Bob Reno in Alabama
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Thankyou....Bob
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uncljohn
AMC Addicted Joined: Jan/03/2013 Location: Peoria AZ Status: Offline Points: 5394 |
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According the 1974 TSM for fleet components the upper control arm has a reinforcement plate welded to the forward corner near the control arm bushing and is identified by a sticker with a part number and side application attached to the front side.
It goes on to identify a fleet lower control arm and a two piece bushing. |
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70 390 5spd Donohue
74 Hornet In restoration 76 Hornet, 5.7L Mercury Marine Power 80 Fuel Injected I6 Spirit 74 232 I-6, 4bbl, 270HL Isky Cam |
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mrblatzman
AMC Addicted Joined: Oct/01/2008 Location: Alabama CSA Status: Offline Points: 2155 |
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Thankyou for replying...Just to make it clear in my ...not a young as it once was.....mind, the brace goes on the front side of the arm? Bob in Alabama
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Thankyou....Bob
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jetnoise
AMC Apprentice Joined: May/09/2008 Location: NC Status: Offline Points: 106 |
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I must say it's hard to rely by the figure which way the brahce goes For posterity Edited by jetnoise - Aug/10/2016 at 6:35pm |
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Assuming LH means Left Hand Side, and the statement being forward corner... I assume the reinforcement is done at side facing the bumper. It would make since, as more torque is applied under heavy steering at the front most bushing, and also because the slight angle of the upward arc.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676 |
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That is what I take from uncljohn's and the TSM's descriptions also. Wouldn't hurt to brace both bushings though. The front (toward bumper) take the most abuse though, no real need to reinforce the rear one.
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Frank Swygert
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jetnoise
AMC Apprentice Joined: May/09/2008 Location: NC Status: Offline Points: 106 |
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Anyone have a photo of a factory piece?
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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For reference I just realised my late build 71 Javelin has the factory reinforced upper control arm. Just never flipped my UCA to notice until recent. After so many years of hearing about such UCA on later build AMC mainly after 73. I guess 71 would have them on all Javelins with a v8, after January build date? Somewhere there was a Service Bulletin posted in January 71 about one piece fleet use strut rod bushings. Maybe big cars got the updated UCA about that time in 71??? Donno.
I think another thread has pix of the factory reinforcement. I have easily searched and found it on Yayhoo images. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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