There are many options for limited-slip differentials, and I turned to a company with a local connection. MFactory Competition Products makes a wide range of products that are race-tested and proven. The 1.5 Metal Plate LSD was pre-set by Patrick at MFactory for an aggressive bite – and that is absolutely the LSD that has been installed. I’m so pumped. Patrick also races at Mission Raceway, which is my home track here on the west coast, and he loves Honda’s way more than I do, so I cannot go wrong! After the rather clunky break-in period with 10w30 oil, this aggressive 1.5 metal plate LSD has significantly calmed down once filled with Motul Competition 75w140. Spoon magnetic drain plugs are also installed in the transmission housing and the oil pan – necessary security.
While the MFactory plate LSD was installed, AES Auto went over the RSX transmission to ensure that it was ready to go for years to come. The 05 Type S transmission has a close-ratio gearbox and a 4.764 final drive, which is an advantage on the track over the earlier model’s 4.389 final drive. While it was very tempting to take advantage of MFactory’s wide range of custom gears, here restraint was shown and the decision was made to utilize this transmission in stock gearing format. As I’m still running 15″ wheels – Volk TE37 and Gram Lights both of which were purchased at PZ Tuning – I want to see how this setup performs before doing anything extreme.
22 comments
you really love that car…
I’ve owned it since it came off the showroom floor – so the answer is yes.
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.
B13NX2K, there is no kit that I am aware of in production. Sorry.
The Ridge Motorsports Park is in “Shelton, WA”, not “Sheldon, WA”
Noch, thank you for catching that. That slipped past all of us! In the first paragraph, no less. Corrected!
Very good read on the article Frank. Enjoy the ride.
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!
Awesome write-up Frank! Cool to see such an unorthodox (turbo to NA) swap play out in such a satisfying manner.
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.
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.
Awesome Build, Awesome write up! Thanks for sharing
Brycen, glad you enjoyed the article. I’m enjoying the car. It’ll be back at the track in a week.
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.
That’s it for bracing, Joe! And bulletproof is the key here!
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.
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.
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.
Man I have a Nissan 200sx. I would love to do a K-swap in my car.
Hi Thomas, there’s now talk on the SR20 FB groups of a swap kit. Maybe it’s getting closer!
Cool to see someone throwing a K series in an NX.
I currently have the only known Nissan Pulsar NX with a K series.
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?