Harley-Davidson® Twin Cam™ 88"1999 to 2004 on Kibblewhite Precision Machining

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All Categories > Motorcycle Valvetrain Components > Harley-Davidson® Motorcycle Valvetrain Components > Harley-Davidson® Twin Cam™ 88" 1999 to 2004


	Harley-Davidson® Twin Cam™ 88" 1999 to 2004
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		High Performance Ovate Wire Beehive Valve Spring Kit for Harley-Davidson® Twin Cam™ 88" Motorcycle (2) For All 5/16" Stem Valves By taking advantage of the latest development in valve spring wire chemistry and manufacturing techniques, KPMI has developed ovate wire “Beehive” style springs that will live and perform at a high level in Harley Davidson applications. By coupling these developments with strict KPMI design protocols and employing multiple design, simulation, and FEA analysis software, we were we able to overcome the torsional stresses unique to ovate wire springs that previously severely limited their operating parameters. This was critical, as there are nearly 100 camshaft part numbers available for these applications. KPMI Beehive Springs are progressively wound using Kobe Super-Clean ...




		Lightweight Racing Valve Spring Kits for Harley-Davidson® Twin Cam™ 88" Motorcycle (2) Ultimate Twin Cam Valvetrain System KPMI takes a scientific “System” approach when designing our Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI’s engineers use our proprietary design and simulation softwares, and draw on our 70+ years of design experience to create these systems. Our design, simulation, and manufacturing processes insure compatibility of the valve spring’s force and natural frequency with the cam profile, valvetrain mass, system harmonics, and the engine RPM. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable ...




		Lightweight Racing Valve Spring Kits for Harley-Davidson® Twin Cam™ 88" Motorcycle (6) For All 5/16" Stem Valves KPMI takes a scientific “System” approach when designing our Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI’s engineers use our proprietary design and simulation softwares, and draw on our 70+ years of design experience to create these systems. Our design, simulation, and manufacturing processes insure compatibility of the valve spring’s force and natural frequency with the cam profile, valvetrain mass, system harmonics, and the engine RPM. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable back to ...




		Black Diamond® Valves for Harley-Davidson® Twin Cam™ 88" Motorcycle (4) For All 5/16" Stem Valves All KPMI Black Diamond Stainless Steel Valves are impregnated by a special German process to .002" deep with a .0002" surface build-up to improve wear properties and reduce friction. This process provides resistance to corrosion and wear that is superior to that developed by hard chromium and electrolysis nickel plating. These valves are light and the profiles provide excellent flow characteristics.




		White Diamond® Valves for Harley-Davidson® Twin Cam™ 88" Motorcycle (3) Ultimate Twin Cam Valvetrain System We fully CNC machine our White Diamond Valves from a one-piece forging of either EV8 Stainless Steel or Inconel-751. These materials have proven heat and corrosion resistance properties. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Strict attention is paid to the surface preparation of the valves, and the purity of the chrome is closely monitored. A 360 degree anode is used to produce the highest possible grade of hard chrome finish. White Diamond Valves are light, strong, one piece forgings with profiles that provide excellent flow characteristics.




		Valve Guides for Harley-Davidson® Twin Cam™ 88" Motorcycle (10) We choose to use the copper based C63000 nickel-aluminum bronze as a material to make valve guides because of its ideal characteristics for the application. The 4-5 percent nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. KPMI guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, promoting high performance and endurance. The top portion of the guides are shortened when cam lift information available at the time of design shows that additional retainer to seal clearance is required.




		Valve Guide Seals for Harley-Davidson® Twin Cam™ 88" Motorcycle KPMI Red 100% Viton® valve stem seals are designed to have optimum fitment, allow for maximum lift, and to give maximum life. KPMI Red valve stem seals are resistant to high temperatures, petroleum products and the corrosive gasses that are the by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power. The Red Ones are truly the racer’s choice.




		Rocker Arm Bushings for Harley-Davidson® Twin Cam™ 88" 1999-2004 Rocker arm bushings need the correct combination characteristics to perform properly in their high load environment. KPMI tested and analyzed several bearing-bronze materials for anti friction qualities, hardness, and resistance to deformation under high loads. Our bronze rocker bushing material meets the high standards we set for success in all of these areas. KPMI Rocker arm bushings are held to tight dimensional tolerances, have an excellent surface finish, machine well, and have a tapered lead on each end to ease installation.




		Valve Seats (Powdered Metal) for Harley-Davidson® Twin Cam™ 88" Motorcycle (4) Using the latest developments in powdered metal technology, KPMI’s R&D team was able to create a high density iron based seat with exceptional wear resistance, resistance to microwelding, and excellent thermal qualities. The seats are tall, offered in several sizes, and have ample material on the ID for shaping, making them universal in application. They allow the builder to repair damaged seat bores and to increase the seat size for larger valves. The ODs are ground for a smooth surface finish that offers maximum contact with the seat bore for optimum heat transfer. KPMI seats have a generous radius on the leading edge to prevent galling during installation. This material is compatible with all types of fuel blends, resists ...




		Cylinder Dowels for Harley-Davidson® Twin Cam™ 88" 1999-2004 KPMI cylinder alignment dowels are machined from steel and receive a black oxide surface treatment. OEM Cylinder Alignment Dowels are often galled and distorted when removed during a top end job. Attempting to straighten and clean the OD of the old dowels is a time wasting, money loosing operation. New KPMI steel dowels make for a quick, clean, easy, and accurate reassembly.




		Cylinder Studs for Harley-Davidson® Twin Cam™ 88" 1999-2004 •These High Performance Cylinder studs are made from 180,000 psi yield strength, fine grain, heat treated, premium grade 8740 material . •Threads are rolled after heat treating to insure maximum compressive stresses are retained, insuring maximum strength, and the longest fatigue life possible. •The case end threads are designed to have a slight interference fit to maintain good thread contact at high temperature. •Studs are centerless ground to insure concentricity, and finished with a premium black oxide treatment for excellent appearance.