The most important engines in immediately’s bikes

Big engines have their own charm. At MOTORRAD Online we show the current engines with the largest cubic capacity.


First of all: the calendar indicating cubic capacity and how best to replace it will not be left here. The topic is very important for this: displacement. Who has more? Who has the biggest? displacement. magic word. Some motorcyclists know this information only from their motorcycle, where it says it all at the end. Short digression: The displacement is caused by the relationship between the cylinder bore and the crankshaft stroke. It is calculated as the volume of a geometric cylinder (V = r² x Pi xh) multiplied by the number of cylinders. And to illustrate a common misconception: cubic capacitance and connecting rod length have nothing to do with each other. Now we take the head teacher’s finger down again and finally get to the actuators, which give the most room for the stroke.


Triumph Rocket III – 2,458cc

Triumph and his triumphs have been closely linked since the 1990s at the latest. The smallest of the Hinckley trio currently has 660 cc in the Trident 660 and Tiger Sport 660. The largest at 2,458 cc will launch you into orbit on the third rocket. Fun Fact: Its displacement is 3.7 times more than 660 triples. The largest motorcycle engine in the series and worthy of a car with 167 hp and 221 Nm. At 2,294 cc, the outgoing engine was smaller in size than the Kolsch, but no less impressive. Giant is currently installed in the Triumph Rocket III R and Rocket III GT models.


Harley-Davidson CVO – 1.923 cc

It has been Harley’s model policy for several years to add a third edition in CVO-exclusive models to the V2 engines of the Big Twin models, which isn’t small anyway. In current form 117 cubic inches, or 1923 metric cubic centimeters, are spread over two cylinders. This power plant produces 166 Nm and 106 hp. By the way: In the interior tuning catalog there are large bore kits for Milwaukee Eight engines, which produce 2,150 cc, 183 Nm and 124 hp without the need for road legal.


Indian Thunderstroke – 1890 cc

Behind the expensive Harley CVOs, the Indian 116 cc or 1,890 cc twin Thunderstroke pulls our souls. With its three camshafts, it made between 162 Nm, 171 Nm and even 92 hp, depending on the model. Twins are installed in all air-cooled Indian models. By the way: Converting cubic inches (ci) to cubic centimeters is not that easy. However, the rule of thumb is (~ cm³ = ci³ x ~ 16.4). why? Depending on the cavity and limit design, the factors in the displacement equation r² increase differently after h, which changes the conversion factor.


Harley-Davidson Milwaukee Eight 114 – 1,868cc

Slightly smaller than the big Indian twin, Harley’s 114 V2 joins the ranks. With its 1,868 cc, it has been the backbone of cruiser models since 2021. The 107 “small” engine is available on only a few models. The 114 is already available on the Street Bob with 155 Nm and 95 hp for 15,495 euros. As an option with water-cooled heads and 159 Nm, it can be purchased for 40 thousand euros at Trike TriGlide.



Harley Davidson

Honda Gold Wing 1800 – 1,833cc

Distributing a large amount of displacement across many cylinders has always been a way to align performance and smoothness. 1,833 Honda cubes spread across six boxing cylinders. As a square axle, with a bore of 73 mm and the same amount of stroke, the six-seater generates 170 Nm of power and 127 hp. It is optionally routed to the cardan via a dual-clutch transmission.


BMW R 18 – 1802 cc

Slightly smaller, but with fewer cylinders: the giant boxer of the BMW R18. The 1802 cc two-cylinder is unique in European engine construction. Currently in use on the four R 18 models, the air-cooled boxer runs on powerful shovels of 158 Nm in the transmission at 3000 rpm, thus generating 92 horsepower. Striking: The engine has an impressively low compression ratio of 9.5:1 and shows off the engine’s potential.


Indian Challenger Power Plus – 1768 cc

The second Indian engine, one of the largest today: the 1768 cc or 108 cc Indian Twin. On the Challenger family’s excavators and Tourers, the known Power Plus drivetrain generates a whopping 178 Nm and 122 hp and has a relatively high compression ratio of 11:1: water cooling makes this possible.


Indian Challenger


Indian, Barry Hathaway

Harley-Davidson Milwaukee Eight 107 – 1,746cc

The 1,746 cc variant will complete the Milwaukee-Eight family of engines in this series. The current smallest air-cooled twin from Harley-Davidson, with 144 to 147 Nm, has long been the backbone of the Softail and Dyna models. In 2021 it gradually fell from the 114 as the “base engine”, even if the 107 was considered the best for a long time the engine was valid.


BMW K 1600 – 1649 cc

A high-performance unit with six cylinders and 1,649 cc driving the BMW K 1600 models. Visually striking due to the very flat angle of the cylinders, which are almost horizontal in front, the high-speed six cylinders drive 175 Nm and 160 hp through the gearbox. The Euro 5 update is eagerly awaited, but it shouldn’t be a big deal.


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conclusion

Well, here it comes: the cubic capacity can only be replaced by the cubic capacity. Two euros in the phrase pig and seal: That’s right. There are still the big engines, which give the motorcycle a certain charm with plenty of lard and running culture. They also manage it by many construction methods and number of cylinders. Twin, triple and six-cylinder in-line, V-engines or boxers between 92 and 167 hp are available for generous displacement fans. And here it comes: a lot of cubic capacity costs a lot of money. By the way: Why aren’t the Boss Hoss’ V8 bikes shown here? Well, these are just car engines.

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