Abstract: An installation device and method for installing engine components, such as bearings and seals, on an engine. The device including a first connection member that couples to an engine and a second moveable member configured to translate relative to the first connection member. The device also includes a rack and pinion arrangement that provides translation of the second moveable member relative to the first connection member.

Abstract: A shift collar for a transmission is disclosed. The shift collar includes a gear engagement surface for engaging a transmission gear, at least seven engagement dogs projecting from the gear engagement surface, a shift sleeve engagement surface for engaging a shift sleeve, and a plurality of grooves formed in the shift sleeve engagement surface for engaging corresponding splines on the shift sleeve. Preferably the engagement dogs are arranged on the gear engagement surface such that each of the engagement dogs engage one of a corresponding number of engagement pockets in the transmission gear.

Abstract: An engine crankcase and transmission assembly includes a transmission housing including a forward mounting portion and a crankcase including a rear-mounting portion configured for mounting to the transmission. The rear-mounting portion of the crankcase includes an upper section and a lower section spaced apart from the upper section so that the first transmission housing and the crankcase define a passage there between when mounted. An oil sump at a lower portion of the crankcase including an expanded section with an outer surface extending rearward beyond the rear mounting portion of the crankcase. An adapter provides for mounting to a second transmission housing. The crankcase receives interchangeable first and second oil routing devices with oil line fittings for receiving complementary oil lines.

Abstract: A rocker box, pushrod assembly, oil delivery system, tappets and tappet guides are provided for an engine, particularly a shovelhead motorcycle engine. The rocker box includes a separable upper portion and lower portion with a seal for sealing the upper portion and lower portion when coupled together. The pushrod assembly includes an adjusting unit that collapses into a pushrod shaft. The oil delivery system includes an oil passageway(s) in a rocker shaft of a rocker arm assembly, and at least one of an oil passageway(s) in a rocker box and an oil passageway(s) in a pushrod assembly.

Abstract: A rocker box, pushrod assembly, oil delivery system, tappets and tappet guides are provided for an engine, particularly a shovelhead motorcycle engine. The rocker box includes a separable upper portion and lower portion with a seal for sealing the upper portion and lower portion when coupled together. The pushrod assembly includes an adjusting unit that collapses into a pushrod shaft. The oil delivery system includes an oil passageway(s) in a rocker shaft of a rocker arm assembly, and at least one of an oil passageway(s) in a rocker box and an oil passageway(s) in a pushrod assembly.

Abstract: A rocker box, pushrod assembly, oil delivery system, tappets and tappet guides are provided for an engine, particularly a shovelhead motorcycle engine. The rocker box includes a separable upper portion and lower portion with a seal for sealing the upper portion and lower portion when coupled together. The pushrod assembly includes an adjusting unit that collapses into a pushrod shaft. The oil delivery system includes an oil passageway(s) in a rocker shaft of a rocker arm assembly, and at least one of an oil passageway(s) in a rocker box and an oil passageway(s) in a pushrod assembly.

Abstract: An inner primary bearing race includes a tapered inside diameter portion to prevent the inner primary bearing race from walking down a transmission mainshaft into engagement with a transmission output seal or transmission output gear. Tools and methods of installing the inner primary bearing race are also described.

Abstract: An internal combustion engine includes a cylinder head and rocker box assembly that includes a duct arrangement that removes blow-by gases. In a first embodiment, a duct is formed from the upper surface of the cylinder head aligned with an opening in the bottom of the rocker box and proceeds to horizontal sections leading to a fitting with a line leading to an intake manifold. In a second embodiment, a single straight duct includes a straight angled portion extending downward at an oblique angle to the upper surface of the cylinder head to an intake port in the cylinder head. Action of the engine draws the unwanted gases from the rocker box through the opening of the ducts to an intake of the engine.

Abstract: A cover is provided with a body including an internal periphery shaped to receive one of a fastener, a plug and a knob in the body; and a magnet positioned within the body. The magnet removably couples the body to the received fastener, plug or knob when positioned in the body. Preferably, an internal periphery of the body closely conforms to an outer periphery of the fastener, plug or knob to be received therein.

Abstract: An integrated cam drive and oil pump assembly for motorcycle engines includes an oil pump body, which is connected with the engine crankcase, and has an oil passageway with a pump outlet portion communicating with an oil reservoir. A pinion gear is positioned in the interior of the oil pump body, is connected with the engine drive shaft for rotation therewith, and mates with an idler gear. A first cam drive gear is mounted on a first camshaft, and mates with the idler gear. A second cam drive gear is mounted on the first camshaft in an axially spaced relationship with the first cam drive gear. A third cam drive gear is mounted on a second camshaft, and mates with the second cam drive gear.

Abstract: A cover is provided with a body including an internal periphery shaped to receive one of a fastener, a plug and a knob in the body; and a magnet positioned within the body. The magnet removably couples the body to the received fastener, plug or knob when positioned in the body. Preferably, an internal periphery of the body closely conforms to an outer periphery of the fastener, plug or knob to be received therein.

Abstract: A reed valve assembly is provided with a body, at least one flexible member, and at least one rigid member. Preferably, the at least one flexible member has a periphery so as to substantially cover opening(s) in the body when positioned adjacent to the body, and the at least one rigid member has a periphery so as to limit deformation of the at least one flexible member.

Abstract: A muffler assembly is provided including a diffuser adapted to expand exhaust gas entering the muffler assembly, an insert with at least one opening through which exhaust gas passes to exit the muffler assembly, and a baffle-less sound dampening portion to muffle engine sound. Preferably, the muffler assembly is of a double walled configuration with insulation provided between an inner wall and an outer wall.

Abstract: A rocker box, pushrod assembly, oil delivery system, tappets and tappet guides are provided for an engine, particularly a shovelhead motorcycle engine. The rocker box includes a separable upper portion and lower portion with a seal for sealing the upper portion and lower portion when coupled together. The pushrod assembly includes an adjusting unit that collapses into a pushrod shaft. The oil delivery system includes an oil passageway(s) in a rocker shaft of a rocker arm assembly, and at least one of an oil passageway(s) in a rocker box and an oil passageway(s) in a pushrod assembly.

Abstract: A valve assembly for a motorcycle engine including a valve body and a plurality of reed valve constructions. The valve assembly is configured for receipt within an aperture of an engine wall extending between the crankcase and the cam chest of the engine. In particular, the valve assembly is configured to fit within a bearing support structure and seal around a pinion shaft.

Abstract: A fluid line connector system provides for connecting a fluid line to an article such as a fluid chamber. The wall of the fluid chamber has an orifice formed therein with a threaded portion. A fitting has a body with a hexagonal passage extending there through. A first end portion includes an interior tool receiving profile having a substantially hexagonal profile. A second end includes threads configured for inserting into the orifice. An exterior of the first end portion includes a raised ridge over which a fluid line is attached. A clamp engages the fluid line over the fitting and retains the connection in place.

Abstract: An oil pump for an internal combustion engine includes a pump body with a first gear chamber and a second gear chamber, and a cover mounting to the pump body. The pump also has a check valve and a pressure relief valve in fluid communication with the gear chambers. The oil pump has a supply set of intermeshing involute spur gears in the first gear chamber with nine involute teeth. A return set of intermeshing involute spur gears with the same gear profile as the supply gears is housed in the second gear chamber. Both sets of gears are driven by a common drive shaft so that the pump may be retrofitted to existing engines. The profile of the gears provides for improved pump volume without increasing angular velocity or gear diameter over gears of the prior art. The return gears are deeper than the supply gears to provide an improved supply to return flow ratio.

Abstract: An tuned induction system for use on a motorcycle having a V-twin engine. The tuned induction system having separate and individual first and second manifold bodies. Each of the separate intake manifold bodies having a flange that couples the individual manifold body to a cylinder head of the V-twin engine. The flange having a continuous radius that maximizes airflow velocity to enhance engine performance.

Abstract: An tuned induction system for use on a motorcycle having a V-twin engine. The tuned induction system having separate and individual first and second manifold bodies. Each of the separate intake manifold bodies having a flange that couples the individual manifold body to a cylinder head of the V-twin engine. The flange having a continuous radius that maximizes airflow velocity to enhance engine performance.