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Reinforcing the 280zx front control arms

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Old Aug 14, 2012 | 08:56 PM
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Reinforcing the 280zx front control arms

Inspired by PPK's thread ( https://www.zdriver.com/forums/280zx...z-28955/page6/ ), I decided to do some welding on a spare set of front control arms. I welded in gussets for the sway bar link mounts and took it a step further to add reinforcement to what looks to me to be the weakest spot of the control arm. I'll be using T3 tension rods, so this should complement them quite well.









Attached Thumbnails Reinforcing the 280zx front control arms-gussets.jpg   Reinforcing the 280zx front control arms-sb-link.jpg   Reinforcing the 280zx front control arms-full-bview.jpg   Reinforcing the 280zx front control arms-topweld1.jpg   Reinforcing the 280zx front control arms-full-tview.jpg  

Old Aug 17, 2012 | 01:30 PM
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Sticky material bro - you have my permission
Old Aug 19, 2012 | 10:47 AM
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nice, do like. now paint that ****
Old Aug 19, 2012 | 09:16 PM
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Painted them yesterday... hanging in the garage to dry / cure. I've also got a custom cheap (junk yard) o-ring fuel rail in the works... ooh la la!
Old Aug 27, 2012 | 07:01 AM
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good upgrade, i prolly should do that to mine. i had to make new sway bar frame mounts (1/4" steel) as i tore mine apart so this would most likely be the next weakest point. that and i need to save up for the t3 rods too.
Old Aug 27, 2012 | 07:33 AM
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^^^ Shiza! I was wondering about those mounts. Jeff P used crazy thick cnc machined mount caps.

I got the control arms and T3 tension rods installed last week. One thing to note if anyone does the sway bar tab reinforcements, is that the farther out gusset cannot poke out below the bottom edge where the tension rod mounts. I had to take one off and shave it down because the tension rod would not sit flat.

I will post more pics this week.
Old Aug 28, 2012 | 05:25 AM
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Very nice upgrade
Old Aug 28, 2012 | 07:31 AM
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yeah jeffp is where i came up with the idea. no one around here wanted to machine parts for a reasonable cost so i had them bend the loop and i welded tabs on to make the flange. i couldn't fit washers but with 1/4" steel who needs it. i have the 1.25" sway bar and poly everywhere and when i cornered hard it ripped the cheap msa mounts right off the bolts. luckily it didn't damage the mount tabs or threads.
Old Aug 28, 2012 | 10:06 AM
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Originally Posted by NismoPick
^^^ Shiza! I was wondering about those mounts. Jeff P used crazy thick cnc machined mount caps.

I got the control arms and T3 tension rods installed last week. One thing to note if anyone does the sway bar tab reinforcements, is that the farther out gusset cannot poke out below the bottom edge where the tension rod mounts. I had to take one off and shave it down because the tension rod would not sit flat.

I will post more pics this week.
Pics from you....

Originally Posted by SHADY280
yeah jeffp is where i came up with the idea. no one around here wanted to machine parts for a reasonable cost so i had them bend the loop and i welded tabs on to make the flange. i couldn't fit washers but with 1/4" steel who needs it. i have the 1.25" sway bar and poly everywhere and when i cornered hard it ripped the cheap msa mounts right off the bolts. luckily it didn't damage the mount tabs or threads.
...and pics from you.... or it never happened ;P

Shady do you think the threaded portion needs to be beefed up as well or just the mounts themselves?
Old Aug 29, 2012 | 08:37 PM
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All done...





Attached Thumbnails Reinforcing the 280zx front control arms-control-front.jpg   Reinforcing the 280zx front control arms-control-right.jpg   Reinforcing the 280zx front control arms-control-left.jpg  
Old Aug 30, 2012 | 07:30 PM
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Originally Posted by NismoPick
All done...





Which part did you have to shave to get the TC rod to sit flat?
Old Aug 30, 2012 | 11:05 PM
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I had to shave down the corner of my gusset that I welded onto the sway link tab. The bottom of the triangle must be flush or shorter so the tension rod will mount flat against the control arm:



Attached Thumbnails Reinforcing the 280zx front control arms-control-arrow1.jpg   Reinforcing the 280zx front control arms-control-arrow2.jpg  
Old Sep 1, 2012 | 07:18 AM
  #13  
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ill work on some pix for you guys, gonna have to get it up on the hoist. i felt the threads to be good enough, i think the outter most bolt could be replaced easily but the one into the frame would be tough. the bolts are equivilant to grade 8 so those are fine. after the upgrade i havent ripped them back off again tho with extreme cornering if that means anything. having 255 wide tires with the large sway prolly didnt help the poor flimsy sway clamps.
Old Sep 2, 2012 | 11:24 AM
  #14  
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Originally Posted by SHADY280
ill work on some pix for you guys, gonna have to get it up on the hoist. i felt the threads to be good enough, i think the outter most bolt could be replaced easily but the one into the frame would be tough. the bolts are equivilant to grade 8 so those are fine. after the upgrade i havent ripped them back off again tho with extreme cornering if that means anything. having 255 wide tires with the large sway prolly didnt help the poor flimsy sway clamps.
Good to hear. I have a set of 275's in the shed asking me why I never put them on the car lol
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