Practical how-to articles and documentation, troubleshooting, and setup procedures based on real experience. Clear explanations intended to help you diagnose problems, perform repairs, and understand why the solution works.
Installing the larger KA24DE throttle body onto the CA18DET intake manifold is one of the rare free mods that has no drawbacks. Although a gain in horsepower is usually not evident when swapping a larger throttle body onto a pressurized…
Depending on how you count it, the ca18det has over 10 coolant lines. For those building their cars for race use, this can be reduced to only one line (excluding the radiator inlet and outlet). I will demonstrate this with…
New to 240’s and trying to figure out why no one actually refers to their car as a 240sx. This list should help you out. S13 = 1989 – 1994 240sx (Available as Hatchback or Coupe) S14 = 1994 –…
BOV Theory Installing the SSQV BOV Theory The function of a blow off valve (BOV) is to reduce pressure waves that result when the throttle plate of your engine is suddenly closed. For example, when shifting gears the turbo is…
A few months ago I posted a how to guide on installing a Walbro 255 fuel pump into the Nissan 240sx. As I noted the Walbro has a tendency to overflow the stock fuel pressure regulator on the 240sx and…
Bleeding brakes is not the scary proposition that many people make it out to be. I often here it said that you do not touch your brakes unless you really know what you are doing. Well I’ve got some advice…
The T1R X-brace is a strut tower brace that has a lower x member that ties the tops of the strut towers to the steering rack on the Honda S2000. This brace effectively locks the front of the chassis which…
New simplified coolant mod number 2 available here. CA18DET Coolant Mod Number 2 (From 10 Lines to 1) One thing I value on a car that will see serious track time is weight reduction and simplification. This mod focuses on…
I’ve come to the conclusion that the Nismo mounts that everyone swaps into their 240’s are not only over-rated but a waste of money. One of the main reasons people swapping in the CA18DET have a hard time locating a…
The turbo found on the SR20DET motor is an upgrade that virtually every CA18DET owner has run at one point or another. Where the CA18DET T25 turbo is good to about 12psi and looses boost towards redline, the SR20DET T25…
Like most Nissan motors, the CA18DET has a maze of vacuum lines that quickly become confusing to those unfamiliar with the motor. The following is a quick guide of what needs to be hooked up and where in order to…
Installing a lightweight single piece driveshaft on the 240sx offers a few benefits over the factory 2 piece unit. First, your driveshaft is considered a rotating mass and as such, any weight saved on your driveshaft translates into a quicker,…