Engine Build: Turbocharged Honda K24 Engine

Engine Build: Turbocharged Honda K24 Engine

At just 17 years old, Leo Greco has taught himself engine building techniques out of necessity.

Article courtesy ENGINE BUILDER.

One of our favorite aspects of the Engine of the Week series is seeing what all of you are building. Whether it’s a top-of-the-line, race-specific, high-horsepower beast of an engine, a vintage/classic rebuild, a street/strip build or something fun for a hot rod, we love it as much as you do.

We especially like when engine builders, racers and enthusiasts reach out to us with builds they are putting together, and our latest comes from Leo Greco in Ypsilanti, MI. Leo is an aspiring, young engine builder just 17 years old, but he’s been working hard to build a turbocharged Honda K24 engine for his 2003 Toyota Celica.

“I’m 17 and this is the first engine build I’ve done in the middle of winter,” Greco says. “I’ve always liked cars ever since I was super young. I had a love for the Liberty Walk R35 GTRs since it came out. Engine building was something I got into out of necessity since I couldn’t afford to have it built by someone else, so I had to do it myself.”

Leo’s Honda K24 engine got its machine work done by Auto Parts Machine Shop. Leo had the crank cleaned and polished with some minor balancing work done to it as well. The heads were fully disassembled and hot tanked and given a full competition valve job before being reassembled.

The rest of the K24 features ACL Race bearings, new rods, JE pistons, and a ported K20 pump. “I’m hoping to have the turbo on and the engine fully sealed back up by the end of the month,” Greco says. “I should have it in the car and fully working in spring if it all goes well.”

Leo’s Honda engine should be capable of 700 hp, only limited by the stock sleeves, but he says he plans on staying around 400 hp due to the Celica being a daily driver on Michigan roads. At just 17, Leo should be in for a fun 2021 with this new K swap leading the way.

Engine of the Week is sponsored by PennGrade Motor OilElring – Das Original and Scat Crankshafts.

You May Also Like

Ignition Coil Output

To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.

Kilovolts or kV is the unit used to measure the output of an ignition coil. Some coils can output 20kV to 40 kV. So, how does an ignition coil turn system or battery voltage into these huge voltages? The answer is inductance. 

The ECM provides the voltage to the primary coil winding. The primary winding might have 100 turns around the coil’s core or plates. When the voltage to the coil is turned off, a magnetic field collapses. The collapsing field will generate more than 100 volts thanks to inductance. The energy is transformed by the windings in the secondary with inductance again, but thanks to the 10,000 windings, the voltage is boosted to 40kV at the spark plug’s electrodes. The best way to see inductance inside the primary windings is to use an amp probe placed around the positive wire for the ignition coil. With this setup, you can see the current ramping in the coil and the collapse of the magnetic field. 

Turbochargers on Minis

No matter if it is a BMW or MINI, when the engine stops turning, the oil flowing to the turbocharger stops.

Fuel Pumps and Cranking

Diagnosing the problem comes down to understanding what causes a loss of fuel pressure.

Plastic Timing Chain Guides

Timing chain guides are designed to wear, but the guides are designed to last the engine’s life.

ECM And PCM Calibration Numbers

Finding out if the vehicle has the latest version or calibration on a module is a required step.

Other Posts

Single-Turbo LBZ Duramax Engine

This LBZ Duramax came from a donor truck Josh Kaye had purchased at an auction.

Spark Plug Replacement

Here are some tips to follow when replacing a spark plug.

Solving Intermittent Overheating

New cooling systems anticipate and influence changes in coolant temperature. 

Spark Plug Fouling

Understanding why plugs get dirty.