KA24E Turbo Kit Guide: Best Options for Boosting Your Nissan

If you’re running a KA24E engine—whether in a Nissan 240SX, D21 Hardbody pickup, or even a custom project—you might be wondering how to squeeze more performance from this humble 2.4L single-cam workhorse. The answer? A turbo kit.

This guide breaks down everything you need to know about KA24E turbo kits, including why boosting this engine is a popular option, what parts you’ll need, what kits are worth considering in 2025, and how to build a setup that’s reliable, affordable, and fun to drive.

Why Turbocharge the KA24E?

The KA24E, produced from the late 1980s through the mid-1990s, is a cast-iron, SOHC engine originally designed for utility and durability—not speed. It was built to deliver low-end torque for trucks and economy cars. However, its solid block, generous displacement, and aftermarket support make it a great candidate for forced induction.

Benefits of turbocharging a KA24E:

• Boost in horsepower: Easily push from ~140 hp stock to 220–300+ hp with moderate boost (7–12 psi)
  
• More torque: Turbocharging adds punch throughout the rev range
  
• Cheaper than a full engine swap: A turbo kit costs less than swapping to SR20DET or LS engines
  
• Great for learning: The KA24E platform is forgiving for DIYers and first-time turbo builders
  

Potential drawbacks:

• Single cam head limits high-RPM breathing vs KA24DE
  
• Older engines may need a rebuild before handling boost
  
• Tuning is essential to avoid detonation or lean-out failures
  

What to Consider Before Buying a KA24E Turbo Kit

1. Engine Health Check

Before strapping on a turbo, inspect:

• Compression across all cylinders (ideally 170–180 psi)
  
• No oil leaks or blow-by
  
• Head gasket condition
  

A worn engine will fail quickly under boost. Refreshing the block with new rings, bearings, and gaskets is recommended if you’re pushing past 250 hp.

2. Chassis Fitment

KA24E-powered vehicles include:

• Nissan 240SX S13 (1989–1990, U.S. models)
  
• Nissan D21 Hardbody Pickup
  
• Nissan Axxess/Previa (Canada & select markets)
  

Not all turbo kits fit every chassis equally—intercooler routing, exhaust clearance, and engine bay space differ. Make sure the kit is designed for your vehicle or be ready to modify components.

3. Supporting Mods You’ll Need

A turbo kit is just the beginning. To make it work, you’ll need:

• Upgraded fuel injectors (370cc–550cc recommended)
  
• Fuel pressure regulator
  
• Wideband O2 sensor for tuning
  
• Standalone or piggyback ECU (Nistune, Megasquirt, or SAFC if budget-limited)
  
• Front-mount intercooler (FMIC) for intake cooling
  
• Boost controller and gauge
  
• Blow-off valve (BOV) and turbo timer
  

Best KA24E Turbo Kits in 2025

Here are some of the top-rated turbo kits that have earned respect in the KA community for price, performance, and fitment.

1. CX Racing KA24E Turbo Kit

Type: Bolt-on | Price: ~$1,700–$2,000
Includes:

• T3/T4 turbo
  
• Stainless turbo manifold
  
• FMIC and piping
  
• Downpipe, BOV, oil lines
  
• Wastegate, couplers, clamps
  

Pros:

• Reliable, well-reviewed, and proven on many S13 builds
  
• Reasonable install time with no major fab work
  
• Great for up to 300hp builds
  

Cons:

• Does not include fuel management or tuning gear
  
• May require heat shielding or firewall trimming in trucks
  

2. Godspeed KA24E Turbo Kit

Type: Mid-range | Price: ~$1,200–$1,500

Pros:

• More affordable entry point than CX Racing
  
• Includes basic hardware for a mild street build
  

Cons:

• May require custom fab on intercooler pipes
  
• Turbo durability isn’t as proven under high boost
  
• Not plug-and-play for all KA24E platforms
  

3. Custom DIY Turbo Setup

Type: Budget/flexible | Price: Varies ($600–$1,200)

Sourcing your own:

• T3 or T28 turbo
  
• Cast or log manifold
  
• 2.5–3” downpipe
  
• Oil feed/return lines
  
• Used FMIC kit from other builds
  

Pros:

• Tailored to your budget and needs
  
• Can mix high-end and budget parts
  

Cons:

• Requires knowledge of turbo sizing, fabrication
  
• Fitment issues are common
  
• No warranty or single-point support
  

4. Budget-Friendly Turbo Kits (eBay-Style or Entry-Level)

Type: Affordable entry point | Price: $500–$800

Pros:

• Great for budget-conscious builders or first-time turbo projects
  
• Useful for mock-up and fitment planning
  
• A solid starting point when paired with proper tuning and supporting mods
  

Things to Consider:

• May require additional reinforcement (e.g., gasket upgrades, better fasteners)
  
• Quality varies by supplier—choose kits from trusted manufacturers with testing standards
  
• Best for builds targeting moderate boost (6–8 psi) on stock internals
  

⚠️ Tip: If you’re considering an entry-level kit, make sure it comes from a supplier that offers after-sale support, clear specs, and compatibility information—that makes all the difference.

KA24E Turbo Build Tips & Tuning Advice

• Tuning is everything. A bad tune will destroy even the best kit.
  
• Run premium fuel (91+ octane) and set conservative boost if you’re untuned.
  
• Keep boost around 7–10 psi for stock internals.
  
• Consider ARP head studs and a Cometic head gasket if running more than 12 psi.
  
• Use a catch can to prevent blow-by oil contamination.
  
• Get your AFRs right: idle ~14.7, wide-open throttle ~11.5–12.0.
  

KA24E vs KA24DE for Turbo Builds

Verdict: If you already have a KA24E, boosting it can be cost-effective. But if you’re chasing 400+ hp or high-revving performance, the KA24DE or SR20DET may be worth considering.

FAQs

1. What size engine is the KA24E?

The KA24E is a 2.4-liter inline-4 engine developed by Nissan. It features a single overhead camshaft (SOHC) design and was commonly found in the Nissan 240SX, Hardbody trucks (D21), and Pathfinder models from the late 1980s through the 1990s.

2. What is the best turbo for the KA24E?

The best turbo depends on your performance goals. For street driving and moderate boost (up to 300 horsepower), popular options include a T3/T4 hybrid turbo or a Garrett GT28R for quicker spool.

If you’re aiming for high-horsepower or track use, a GT30 or a BorgWarner S257 can deliver more top-end power—but will require stronger supporting mods.

3. How much horsepower would a turbo kit add?

A well-matched turbo kit can add anywhere from 80 to 150+ horsepower to a stock KA24E. With proper tuning, upgraded fuel delivery, and supporting hardware, it’s realistic to reach over 300 horsepower safely, especially at boost levels around 8 to 12 PSI.

4. What is the difference between KA24DE and KA24E?

The KA24DE is the dual overhead cam (DOHC) version of the engine, while the KA24E uses a single overhead cam (SOHC) design. The KA24DE has better airflow and more potential for high-RPM power, thanks to its 16-valve configuration versus the KA24E’s 12 valves. However, the KA24E is simpler, cheaper, and still very capable when turbocharged.

5. Can you put a turbo kit on a stock engine?

Yes, you can install a turbo kit on a stock KA24E. The engine can handle moderate boost levels—typically up to 10 or 12 PSI—if it’s in good health.

Just be sure to upgrade your fuel system, add proper engine management (like a tuned ECU or piggyback controller), and use high-quality components. For long-term durability at high power levels, forged internals are recommended.

Final Thoughts: Is Turbocharging Your KA24E Worth It?

Absolutely—if you’re realistic about your goals, budget, and mechanical skills.

A KA24E turbo kit can breathe new life into your Nissan and deliver serious fun per dollar. Whether you’re building a sleeper truck or a budget drift car, boosting the KA24E remains a solid choice in 2025.

Just remember:

• Start with a healthy engine
  
• Budget for the full build—not just the kit
  
• Take your time with tuning and supporting mods
  

With the right setup, your KA24E can punch well above its weight.

About Us

At Nanjing Woda Auto Technology Co., Ltd., we specialize in providing high-quality engine components and performance kits—including turbo kits, cylinder heads, crankshafts, and complete engines—for the global aftermarket.

With over 25 years of experience, we’re committed to helping builders, distributors, and auto shops find reliable solutions that deliver performance and value.

Ready to Start Your KA24E Turbo Build?

Whether you need a budget-friendly turbo kit or high-performance components for a custom setup, our team is here to help.
Contact us today for product details, compatibility support, and international shipping options.

Let’s boost your build—together.