Step 4: The next step is to install the ring in the appropriate bore, using a piston-ring squaring tool. Often, the piston rings won’t fit in the bore out of the box because they are oversize. > Frequently Asked Questions 01. Wiseco pistons and clutch baskets are forged from aerospace grade aluminum for the ultimate in quality and strength. When aluminum is forged, the process compresses the material molecules closer together, making the aluminum more dense and resistant to impact and fatigue. The material properties improve in many aspects, including ultimate strength and ductility, which means the material will bend before it breaks. This is important for high performance race applications, where increases in horsepower and compression will stress the components much further than a stock engine. Wiseco ArmorGlide skirt coating is a dry film lubricant applied to the piston skirt. This coating helps reduce friction, improving performance, and will also help quiet the piston in the cylinder bore. This coating is permanently applied, and is not a break in coating, it is on the piston for the life of the part. Wiseco ArmorPlating is applied to our RC series pistons, and select Sport Compact pistons. This high performance coating is applied to the piston crown, ring grooves, and piston pin bore. The coating on the dome helps protect the piston from the damage caused by detonation, and will actually harden over time from the heat caused by combustion. This coating is also applied to the ring groove, and helps eliminate micro-welding of the ring, and improve wear of the ring groove along with improving ring seal. The coating in the piston pin bore improves wear, reduces friction, and eliminates material deformation of the lockring groove. Thank you for buying the best clutch basket available! Your clutch basket includes detailed instructions on how to install the basket on your vehicle. Once important thing to keep in mind is that the backing plate screws must be peened after they are installed, we cannot stress this enough! See your instruction sheet for details. Wiseco Powersports pistons are designed for optimal piston to wall clearance for the specific bore size of your engine. For example, your 125cc dirt bike engine is 54mm bore, the Wiseco piston is designed just for that bore size, and does not require any specific adjustments to fit properly. Some applications, such as higher stressed race engines (or nitrous injected), forced induction engines (supercharged or turbos), do require additional piston to wall clearance than Wiseco has designed into the part. These are special applications that are normally built at high performance engine shops. These builders are familiar with the needs of these engines, and can help establish the needed engine set up parameters including piston to wall clearance. As a general rule, any high stress engines that include nitrous, turbo or supercharging, up to high pressure blowers require an additional.001 to.003' clearance. Canon 7d firmware update 2 0 3. Your new Wiseco piston is marked on the top (crown) of the piston, indicating the direction. In most applications, the piston has an arrow intended to point toward the exhaust side of the engine (keep in mind this does not always mean the front of the vehicle). The Wiseco V-twin piston line is marked in a similar manner, with an arrow indicating the exhaust side. Our Twin Cam piston line includes additional marking indicating the front position of the engine, if viewed from the seat of the bike. Some Wiseco automotive pistons, such as the Sport Compact or LS series pistons, include a marking that indicates the front of the engine. The front of the engine typically means the cam chain or cam belt / water pump end of the engine. In a rear wheel drive car, this can literally mean the front of the car, and on a traverse engine install (such as a front wheel drive), this will mean the right side of the engine if viewed from the driver position. Outboard engines are very unique, in that the cooling system uses cold water from the lake or ocean. Because of this, the engine cylinder runs very cool as compared to many other engine types, and the piston does require more clearance to operate properly. Your Wiseco piston does have this additional clearance built into the design, and it is always best to follow the proper break in process.
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