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Project S2000 – Part 16 – Testing Track Upgrades

  • Khiem Dinh

,

The clearance is a bit tight to the sway bar.  Tommy and I mocked up the duct on the passenger side which happens to have a tweaked control arm.  So things are not quite even between the passenger and driver sides of the car.  Plenty of clearance on the passenger side from the sway bar, but not so much on the driver’s side.

 

 

Checking the clearance to the wheel with it turned in… Yikes!  It’s CLOSE.  When we mocked it up, the car was on jack stands with the wheel at full-droop.  With the car on the ground, the geometry changes and makes thing much tighter.  Note to self, next time, take that into consideration.  For now, I just can’t use full-lock steering unless going very slowly.  Any compression of the suspension will cause the duct to hit the wheel.  The same situation exists with regards to the sway bar; with the car on the ground the sway bar gets closer to the duct.  Well, it’s a good thing I chose the PC-ABS material which has some flex to it!

 

Here are two views of the duct installed to give you an idea of its position relative to the tire and bodywork.

 

Project S2000 with Project 370Z parked early in the morning at Willow Springs.  Clint and I both taped up the front end of our cars to reduced airflow to our oil coolers.  Mine is a little hard to see, but I used black duct tape to tape off the entire middle section of the front opening which is about 60%.  Even though I have a Mocal thermostat for my oil cooler setup, I learned they still always bleed some oil with it ‘closed’ so as to not have extremely cold oil that would shock the system when it opened.  On my drive last year to the track with air temps below freezing, my oil temperature was only 60C (measured using the ARK Design MFD2 of course).  So I learned my lesson from last year and taped up the car.  The oil temp stayed at a relatively warm temperature of 85C along with the coolant temperature staying at a rock steady 90C.  Even before getting to the cold air temperatures in the mountains, the oil temperature was only 90C down in the South Bay with the air temperature around 50F.

 

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7 comments
  1. James Windham says:
    October 26, 2020 at 8:28 am

    Does Tommy still have the info for these ducts? I’d love to have a set for my car to help keep my rotors from cracking!

    I didn’t want to cut everything needed for the Baero ducts

    Reply
    1. Khiem Dinh says:
      October 26, 2020 at 7:38 pm

      Here’s the DIY version.
      https://motoiq.com/project-s2000-part-24-bridgestone-potenza-re-71rs-and-diy-brake-ducts/3/
      Or I can email you.

      Reply
      1. James Windham says:
        October 30, 2020 at 7:07 am

        I actually have made and remade the DIY ones about 4 times now. I added a chicken wire like mesh to the lower portion to help keep it in shape as well which helped. I also tried modifying the Porsche ducts which didn’t seem as effective

        If you could email me about these composite ones I would appreciate it.

        Reply
  2. Sean L says:
    February 28, 2025 at 1:18 pm

    Hi Khiem, I appreciate the R&D you’ve put into the 3D printed brake ducts. Do you still have the STL files for those, and would you be willing to share it?

    Reply
    1. Khiem Dinh says:
      March 3, 2025 at 9:15 am

      Check your email.

      Reply
      1. Bryan says:
        September 10, 2025 at 10:42 am

        Hey Khiem, would you be willing to share those files again? I would love to give these a shot and maybe develop them a little further.

        Reply
        1. Khiem Dinh says:
          September 10, 2025 at 3:03 pm

          Shoot me an email. s2kmanifold@gmail.com

          Reply

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