7 Naturally Aspirated 4-Cylinder Engines That Pump Out V6 And Even V8 Power – Jalopnik

Naturally aspirated combustion engines. Aren’t they only beautiful? Nothing sends a tingle down your backbone like a V12 at full tilt, and one might argue that the one factor that works tougher than a free-breathing V8 is Dwight Schrute. V6s, in the meantime, are nearly as versatile as innovations come, powering every part from the fantastic Alfa Romeo 155 DTM to the standard Honda Odyssey.

Then there’s the four-cylinder engine. It is by far probably the most profitable of the bunch, and although it is not fairly as unique or thrilling as its friends, it could possibly pack an almighty punch below the best hood. That is exactly what we wish to have fun on this article: the rowdiest, strongest little naturally aspirated four-bangers ever created. We’ve obtained highway vehicles, race vehicles, and even a reborn Nineteen Seventies legend making appearances, and a few of these can be greater than able to scaring a V6 or two (which might make, er, a V12). Saddle up — the primary one’s a corker.

Take 1,224 kilos, unfold nearly completely between the axles, and add a 343-hp, 2.5-liter naturally aspirated four-cylinder. Sounds like fairly the recipe, would not it? The Mono R delivers exactly the kind of statistical hit squad you’d think about: 0 to 62 mph in 2.5 seconds and a high pace of 170 mph. Oh, and that engine additionally spins to a depraved 8,800 rpm – and for the reason that solely gearbox possibility is a six-speed sequential, you may actually max these revs out earlier than upshifting. 

More numbers, did you say? Sure. The Mono R develops 137 hp per liter, which trumps even the Porsche 918 Spyder hypercar. It additionally delivers a power-to-weight ratio of 618 hp per metric ton, superior even to the unhinged Lamborghini Sesto Elemento. All this helped BAC set a brand new production-car lap document on the Red Bull Ring in Austria, beating the earlier chief, the Ferrari LaFerrari, by nearly 6 seconds.

Widely thought of to be one of many best two-seat driver’s vehicles ever made, the Honda S2000 is nothing in need of a mechanical masterpiece. Its engine is a screamer: two liters, 4 cylinders, and a little bit of VTEC wizardry sprinkled on high, culminating in a 9,000-rpm redline. The F22C1 engine within the S2000 could have been distinctive to the U.S., however it wasn’t the cream of the crop.

That accolade goes to the unique F20C, which produced 247 hp (versus 237 hp). Small margins, positive, however the F20C’s particular output of 123 hp per liter remained a document for naturally aspirated manufacturing engines for a few decade. It was ultimately dethroned by the gorgeous Ferrari 458 Italia, and in reality, there’s nothing to be upset about there. Here’s a enjoyable reality for you: at its redline, the S2000’s engine had a imply piston pace of 4,960 toes per minute (25.2 meters per second), which was much more than what in-period Formula 1 engines might handle.

These days, the E30 M3 is driving excessive as a cult icon whose design speaks to nearly everyone it passes, however again within the late Nineteen Eighties and early Nineties, it had completely no drawback getting these completely symmetrical kidney grilles soiled. 

In its first two seasons in touring automobile racing, the E30 M3 received titles in England, France, and Germany, and even grew to become a world champion. In reality, throughout its five-year racing profession in Group A, the E30 M3 is estimated to have received greater than 1,400 races worldwide. That averages out to 1 race win each 31 hours.

At the center of its success was the S14 four-cylinder, and it is an engineering marvel. While the highway vehicles topped out at 238 hp, probably the most potent racing variations reached 360 hp. It was famed for its sturdiness too, which is why it conquered the Nürburgring 24 Hours 4 years in a row.

Now this is a ground-up revival undertaking that is simple to get behind. Built by a small British agency referred to as Boreham Motorworks below license from Ford, it’s successfully a first-generation Ford Escort RS that weighs below 2,000 kilos, is rear-wheel drive, makes use of a five-speed dogleg transmission, and would not strive too laborious to reinvent the unique automobile’s design. The RS’s engine is named the TEN-Okay, and that ought to offer you a clue as to what makes it so darn particular.

Yes, you guessed it: the TEN-Okay screams to 10,000 rpm. Boreham Motorworks has in some way additionally managed to squeeze 325 hp from its tiny 2.1-liter displacement with out utilizing a turbocharger — a exceptional feat when you think about that the engine weighs simply 187 kilos. For some perspective, the 1.0-liter four-cylinder that BMW put in its maniacal S 1000 RR superbike weighed just below 132 kilos when it launched. All issues thought of — weight, energy, redline, and so forth — the TEN-Okay merely must be one of many best engineering feats of latest instances.

The 1750 GT Am was an evolution of Alfa’s touring-car recipe of the late Nineteen Sixties, and what a luxurious dish this turned out to be. Its offended little 2.0-liter unit could have produced solely 210 hp and topped out at 143 mph, however the GT Am weighed simply 2,072 kilos – about the identical as the typical day by day yield on the Schrute Beet Farm. Precise acceleration instances are unknown, however we would wager the GT Am can be an excellent match for a few of one of the best scorching hatches of all time.

It stormed to the 1970 European Touring Car Championship, bagging wins at Monza, the Nürburgring, and Zandvoort en route. Its successor, the 2000 GT Am, stored the identical displacement, although it gained a noticeable energy bump to 240 hp. Alfa received the producers’ title in 1971 by topping the rostrum at tracks like Paul Ricard and Spa-Francorchamps. This automobile is yet one more demonstration of how devastatingly efficient 4 little cylinders will be.

The Honda Civic is a deeply spectacular factor. In reality, the 2025 hybrid’s estimated 48 mpg makes it the platonic preferrred of economical vehicles. What we actually love, although, is how simply the Civic nameplate can flip right into a hooligan. Take the FD2 Mugen RR, as an illustration: it makes use of the identical K20A four-cylinder as a typical FD2 Type R, however will get upgraded camshafts, a bigger air consumption, and stiffer valve springs, amongst different modifications.

The result’s a 240-ish-horsepower, front-wheel-drive grip monster that will get to 62 mph in below 6 seconds. That searing tempo helped it document a 1:00.6 lap round Japan’s Tsukuba Circuit, which is mighty spectacular. Just 300 examples of this restricted version have been ever produced, although, and all for the Japanese market. The Mugen RR can be near coming into classic-car territory now (it was launched again in 2007), so getting your palms on this four-cylinder maniac could show… troublesome.

When it was launched again in 1993, the Porsche 968 CS had the largest four-cylinder road-car engine in manufacturing at 3.0 liters. Just take into consideration that for a second: a 3.0-liter four-cylinder engine. That’s the identical dimension because the straight-six within the BMW M3 G80, and even the flat-plane-crank eight-cylinder within the Ariel Atom V8. The engine was dubbed the M44/43, and the upshot of all that chubbiness is 236 hp, 0 to 62 mph in 6.3 seconds, and a high pace of 160 mph.

Beyond simply the uncooked numbers, this engine featured a number of technological breakthroughs for Porsche. The essential one was VarioCam expertise, which optimized torque at low-to-mid engine speeds whereas heightening the ability supply additional up the rev vary. Porsche even says the legendary Walter Röhrl, a two-time WRC champion, referred to as the 968 CS the marque’s best-handling automobile on the time. Still assume naturally aspirated four-cylinder engines are simply small and puny?