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Awesome … or Sacrilegious! Meet the Nissan NX K24 Swap.

  • Frank Ewald

 

Designer. Fabricator. Problem solver. Tuner. Friend. Paulo at AES Auto led this project and has built a fabulous car. Four days after releasing the car from the shop, it was out at our local track where it ran all day long. It needed a couple of bump starts as I kept flooding it. The alignment, which I did, needs some tweaking. The kill switch which hadn’t been touched during the project needed to be tightened as the entire electrical system went dead. That is minimal and not at all tied in with the work that AES Auto did. Paulo might be saying, “One of One, Frank!” right now, but I know that in a month or two he will be looking for another unique build. AES Auto has built me the best version of the NX that I have had. And for that, I thank you for enduring the frustrations and challenges that this project brought you. Well Done!

Having an awesome motor in a unique body is one thing. Getting it to handle properly is quite another. To assist us in this endeavour to be an excellent handling car, I called the best suspension guy that I know – Mike Kojima. And Mike connected me with Feal Suspension, who opened for business in 2007.  I’m guessing that you may not be very familiar with the brand – but you should be. I’m pretty sure that a large percentage of you will recognize the name of Feal’s CEO – Aurimas ‘Odi” Bakchis’. Feal Suspension is a quality company and the personal feedback during the initial discussion and then the purchasing process was fantastic. Driving on the street is exactly what I expected of a track orientated coil over setup. My first drive was first city driving and then a lovely forest road with lots of corners and elevation changes. It was incredible. Driving on the track literally destroyed all of my expectations. The Feal Suspension 442’s were that much better than I anticipated! Those of you running high end setups won’t be surprised. Those like myself who are running a budget-based suspension using parts that you can piece together and run, well, start saving up because you really need to upgrade. Really. There will be a track day reflection piece focusing upon the Feal Suspension 442s soon.

Unboxing the Feal Suspension 442 system just before Christmas, before I knew the fate of the 54C SR20DET was incredible. They look fantastic. And it was time, as the well used and well worn suspension on the car had been through enough.

 

Talking with the team at Feal Suspension, they walked me through the measurements that they wanted. They discussed potential rates. And Mike Kojima worked with me on the specs and spring rates that we wanted for the NX.

 

After the NX K24’s first track day, the Feal Suspension’s 442 system is dirty. And I am smiling. Stay tuned. I’ve got to give you my driving reaction to this amazing suspension setup!

Related

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26 comments
  1. Bob says:
    September 22, 2021 at 11:47 pm

    you really love that car…

    Reply
    1. Frank Ewald says:
      September 23, 2021 at 9:33 pm

      I’ve owned it since it came off the showroom floor – so the answer is yes.

      Reply
  2. B13NX2K says:
    September 23, 2021 at 7:30 am

    DAMN VERY NICE. IS THERE A SWAP KIT FOR SELL ON THIS K20 INTO B13 SHELL. IM SURE ALOT PEOPLE WILL BE INTERESTED SINCE THERE SO MANY PARTS OUT THERE FOR THESE K20 MOTORS.

    Reply
    1. Frank Ewald says:
      September 23, 2021 at 8:24 am

      B13NX2K, there is no kit that I am aware of in production. Sorry.

      Reply
  3. Noch says:
    September 23, 2021 at 8:16 am

    The Ridge Motorsports Park is in “Shelton, WA”, not “Sheldon, WA”

    Reply
    1. Frank Ewald says:
      September 23, 2021 at 8:24 am

      Noch, thank you for catching that. That slipped past all of us! In the first paragraph, no less. Corrected!

      Reply
  4. UpgradedNx says:
    September 23, 2021 at 10:48 am

    Very good read on the article Frank. Enjoy the ride.

    Reply
    1. Frank Ewald says:
      September 25, 2021 at 2:07 pm

      Upgraded, thank you so much. You’re very aware of the struggle that I’ve had the last few years. And know that a lot of thought went into this decision. Thanks so much for introducing me to AES Auto!

      Reply
  5. Andy says:
    September 24, 2021 at 4:54 am

    Awesome write-up Frank! Cool to see such an unorthodox (turbo to NA) swap play out in such a satisfying manner.

    Reply
  6. Frank Ewald says:
    September 24, 2021 at 6:14 am

    This K24 engine is simply silly fast. WHP drop from 360 to 280 – but at the first track day I was out all day and as long as I wanted each session with temps barely rising. I haven’t had a day like that with the DET ever.

    Reply
    1. Paolo says:
      November 9, 2021 at 8:50 pm

      It’s like Honda put the things it learned in the past into the K24 and made available in many platforms — Decent power, good reliability with potential for upgrades.

      Reply
  7. Brycen Phillips says:
    September 26, 2021 at 5:47 am

    Awesome Build, Awesome write up! Thanks for sharing

    Reply
    1. Frank Ewald says:
      September 26, 2021 at 7:29 am

      Brycen, glad you enjoyed the article. I’m enjoying the car. It’ll be back at the track in a week.

      Reply
  8. Joe says:
    October 5, 2021 at 5:59 pm

    I don’t think we got a final pic of the subframe, but it seemed like there had to be more crossbracing than the one bar with the motor mounted in it, right?

    Also, that’s a 4-2-1 header that’s installed.

    Hey, congrats on the build. It should be bulletproof.

    Reply
    1. Frank Ewald says:
      October 9, 2022 at 6:42 am

      That’s it for bracing, Joe! And bulletproof is the key here!

      Reply
  9. Khiem Dinh says:
    October 24, 2021 at 8:03 am

    A little sad to see the SR go, but nothing better than having a track car that just works every time and nothing to think about! 280whp on a mustang is plenty of power. It would probably trap 115-120mph in the 1/4.

    Reply
  10. Khiem Dinh says:
    October 24, 2021 at 8:06 am

    And for reference, my old B14 SE-R with T25 and JWT S3 cams put down 250whp on a dynoject and trapped 110mph. The poor stock VSLD wore out which made the car about worthless on an auto-x. Not too bad on a road course with big enough turns to keep from lighting up the inside tire.

    Reply
    1. Frank Ewald says:
      October 9, 2022 at 6:46 am

      Khiem, sorry that I missed your posts. I haven’t had it out to the 1/4 yet as I’m worried about the axles. I’ve lost Nissan axles in the 1/4 and they were relatively available so I wasn’t worried. These axles are one off and, while I’m having a second set built, I don’t want to risk them just yet. The M-Factory LSD is absolutely keeping the power down in corners, so I’ll have to get out to an autocross (just never been my forte), and just a few weeks ago I put down a personal best at my local track. Besting the SR20DET’s time by half a second.

      Reply
  11. Thomas says:
    October 6, 2022 at 3:06 pm

    Man I have a Nissan 200sx. I would love to do a K-swap in my car.

    Reply
    1. Frank Ewald says:
      October 9, 2022 at 6:47 am

      Hi Thomas, there’s now talk on the SR20 FB groups of a swap kit. Maybe it’s getting closer!

      Reply
  12. Torre says:
    May 10, 2023 at 10:43 am

    Cool to see someone throwing a K series in an NX.
    I currently have the only known Nissan Pulsar NX with a K series.

    Reply
    1. Frank Ewald says:
      May 10, 2023 at 12:31 pm

      Well Done! I think there are now more than one B13 chassis with the K series, but at the time this was the first running one that I knew about. Do you have some pics of yours?

      Reply
  13. Victor says:
    August 13, 2024 at 9:27 pm

    Sacrilegious! what acrap of project, this articule must be remove and banned from this great webside

    Reply
  14. Horace Williamson Jr says:
    September 7, 2025 at 5:54 am

    I would like to know the list of items I need to swap a k20 and k24 swap into my nx2000

    Reply
  15. Horace says:
    September 7, 2025 at 10:51 am

    Frank Ewald
    Would it be possible for you to send me the parts list that I would need to put in a K 20 or a K 24 in my Nissan NX 2000 and what would be the best mount to buy to hook the motor to the B 13 body for the K 20 or K 24 motor mounts

    Reply
  16. Horace Williamson Jr says:
    September 22, 2025 at 3:55 pm

    I’m trying to figure out what universal harness indeed for my nx2000for nthe inside of the car.
    what harness did you use for your nx2000 kswap
    please email me back please at horacewilliamsonjr291@gmail.com

    Reply

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