Welcome to KA24DEvelopment.com...

This website was created to help Nissan 240SX owners extract the most performance from their KA24DE motor. With the recent hype over the SR20DET, RB25DET, etc...I felt it was time to put as much info in one place as I could concerning Nissan DOHC 2.4 liter development and performance.

Most of the info on the site applies to all years of the 240SX that came with the dual overhead cam KA motor ('91-98), but much of it applies to the SOHC and tuning in general. With regard to the 'Tech' articles, you'll find that it's biased towards the S14 ('95-98) 240SX, but again, the theory applies to the other year models, as well as the Altima and Nissan Trucks that came with the KA24DE under the hood...

So what qualifies me to post all this information, and why should you trust that it's correct???

Well...I've owned a total of eight (8) 240SX's, been racing (SCCA Autocross) and driving open track events in my '96 SE for 9 years now, originally built a 160rwhp naturally aspirated KA, and have since gone on to build a few custom KA-T setups...my own S14 is at 12psi now, and making 338rwhp (stock block).

I was a subscriber to the old 240SX.org "Amarok" e-mail list back in '98-99...I've been reading, posting, and moderating on forums such as Freshalloy.com for years, I've done 2 complete "auto to 5-speed" transmission swaps on S14s, as well as countless clutch jobs, brake upgrades, and maintence/repairs on local 240s, done plenty of bolt-on performance upgrades, helped to design/build 2 custom KA turbo setups, as well as my own custom parts fabrication.

So while I haven't done it all, and I certainly don't know it all (or claim to) - I've been doing this since '98 and have tried lots of different setup - Some that worked, plenty that failed - And have learned a lot along the way. My hope is to help educate you on the potential of the motor/chassis of the Nissan 240SX...

And if you find innacuracies, or something doesn't make sense, or you have good info you feel I should add, please e-mail me...

Send questions, comments, website problems, and dirty pictures to orion@gru.net