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Project EF Civic Racecar: Fixing the Front Suspension

  • Dave Zipf
Disassembled front upper control arms
While our lower arms were being modified and our subframe painted we disassembled the upper control arms. We found that the previous builder added these adjustable bushings to the chassis mount to allow for camber and caster adjustment. Unfortunately they have 20 year old rubber bushings and they need to be replaced. We also pressed out the gross old balljoints with split boots.
Kingpin Machine Upper Control Arms with spherical bearings and fresh zinc plating
Once again Kingpin Machine set us up with their spherical bearing equipped upper arms. The same work is done to give us high quality, smooth, and strong IT legal upper arms. Unfortunately, this means we lose our camber adjustment. Our car was running around 2° of negative camber and we would like to keep that for better tire wear.
SPC adjustable balljoint vs stock. Stock balljoint is very worn and has old grease. Dust boot has fallen off with age
Enter SPC and their adjustable balljoint. The joint presses into the stock upper arm but has a slotted bolt to allow us to dial in more camber.
Damaged vs undamaged upper control arms.
While we had the upper arms apart we cleaned off the 30 plus years of dirt and gunk. We also found our right side arm had a big dent in it right behind the balljoint hole. This will weaken the arm at the exact point it needs its structural integrity the most. Fortunately, we were given an entire right front corner from the seller of this car so we had an extra arm we could use.
Cleaned upper control arm assembled with SPC adjustable balljoint and Kingpin pivot arm
With our new parts installed our upper arms look great, purposeful, and ready to install.
Steering rack mounting hardware and bushings. Rack mounts are old but reusable. Bushings are worn out. Energy suspension bushings are red and stiff and ready to install.
With all of the suspension out of the car, now is the perfect time to replace our steering rack bushings. Sure enough, they’re the original rubber bushings Honda installed when Vanilla Ice rapped about the Ninja Turtles. We picked up a set of Energy Suspension urethane bushings to replace the rubber bushes.
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Related Topics
  • suspension
  • Honda
  • Steering
  • Honda Civic
  • EF Civic
  • Kingpin Machine
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WATCH: Fixing the Lexus IS/IS-F’s Biggest Flaws – Suspension, Brakes & Traction!

  • Jeff Naeyaert
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Project NSX: Part 23 – Carbon 6 Toe Links and Compliance Clamps

  • Billy Johnson
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4 comments
  1. Tsukiji Fish Market says:
    August 18, 2025 at 4:47 pm

    Really looking forward to updates. This takes me back to Sport Compact Car days.

    Reply
    1. Dave Zipf says:
      August 18, 2025 at 5:58 pm

      Glad it brings back happy memories. Got lots more coming. Thanks for reading!

      Reply
  2. Khiem Dinh says:
    August 20, 2025 at 8:36 pm

    I absolutely loved the Kingpin spherical bearing setup on Project S2000. All that suspension work is going to transform the car. What can you do to stiffen the chassis within the rules?

    Reply
    1. Dave Zipf says:
      August 21, 2025 at 4:32 pm

      Well it’s already got a rollcage and front strut tower brace. We can add a few more per the rules. I would like to add to the cage as it is very basic. Could use some extra diagonals.

      Reply

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