Scooter tuning can be a fun, exciting, and sometimes rewarding venture. However, there are times where the new tuner gets in a little over their head. Remember, not all scooters or parts are the same. This isn’t always the case, and this is where we will teach you the differences in not only Ruckus engines but GY6 engines as well. Just because a scooter is a 50cc Single Over Head Cam (SOHC), doesn’t mean that all 50cc parts are going to fit. Just as the case that not all the same model scooter parts may fit other models of that scooter.
The Top End Difference
The first example we will use today is the difference between a 50cc GY6 and a standard 50cc Ruckus engine. While the GY6 can be a 50cc engine, it is an air-cooled engine whereas the Ruckus 50cc is water-cooled. So, changing cylinder heads is out of the question because of the routing of the coolant passages in the cylinder. The GY6 has no coolant passages nor any room or provisions in its cylinder for them.
Also, because of the fact that the GY6 is air-cooled, it is also a physically larger engine. This is because of the cooling fins used to dissipate the heat from the engine, whereas the water-cooled Ruckus has no cooling fins on its head. This does mean that maintenance is a little less involved in the GY6, as you no longer have to worry about coolant that may freeze or boil over while riding, but the GY6 will run hotter, too.
While the Ruckus is 50cc, the GY6 engine ranges from 50cc to 150cc. This also means that not only will you not be able to use a 150cc cylinder or head on the Ruckus, but you also can’t even put a 150cc cylinder or head on the 50cc version of the GY6. It is physically impossible because of the bore in the cases, as well as differences in designs of the cylinders between the GY6 and Ruckus.
The Bottom End Difference
Finally, there are also differences in the design of the Ruckus and the GY6 in mounting and the CVT transmissions. The Ruckus comes in only one length; however, there are three different lengths in the GY6 CVT transmissions. The “short-case” GY6 will fit only a 10” wheel and is usually used in go-karts and mini-ATV/UTVs. The “long-case” GY6 will fit up to a 13” wheel and is the one used in most GY6 swaps in Ruckus’. The “extra-long-case” GY6 will fit up to a 16” wheel (with a low-profile tire). This is still relatively new or too expensive for now to use in a swap. There is also a difference in design in how the engines are mounted. So when you consider a swap, be sure to include engine mounts. Also include the wiring harness, wheel, tire, and other swap parts before you mount a GY6.
While there are many things to keep in mind, a GY6 swap shouldn’t be a problem. With the right tools, patience, parts, and some knowledge beforehand, nearly anyone can perform this swap in their garage at home! We even provide the parts you need for your swap! Call us or visit our product page today!
