Feuling, Race Series 472 cylinder head kit, oil-cooled M8

With Reaper 472 camshaft (993525).
The FEULING M8 oil-cooled cam box kits include all the components needed from the top to the bottom of the cam box, conveniently packaged under 1 part number. These combined kits not only ensure that each individual part is designed to work and function together, but that they do so in total harmony. These cam box kits eliminate uncertainty in the ordering process and guarantee the engine builder maximum reliability, optimum performance and the lowest possible engine and oil temperatures.
• Quieter, smoother engine operation • Increased oil pressure, scavenging volume and engine oil flow • 27% more scavenging gear pressure and volume compared to the stock model • 42% more scavenging volume with port, passage and bore sizing matched to the engine case • 46% more oil volume to the crankshaft and rod bearings • Engine temperatures 15-25 degrees cooler • Oil temperatures 15-30 degrees cooler • 10-30 PSI additional oil pressure • Reduces wet sumping, blow-by and oily air filters • Magnets in the oil pump to help protect the gears and pressure relief valve • Test results show a 2 HP and 2 ft/lbs. rear wheel torque gain on Milwaukee Eight • NOTE: Feuling in-house testing shows a 50% reduction in crankcase oil level.
The 472 Reaper is a versatile camshaft and Feuling's default choice for 4-1/2" races on 114" - 117" engines looking for a little more than the Feuling 465 profile and wanting a direct bolt-in installation. The 472 has excellent low-rpm performance with substantial gains above 2,900 RPM compared to the stock model. It responds very well to increased displacement and/or compression, exhaust system and air filter. The use of high-performance valve springs is not mandatory, but may result in a quieter, smoother valvetrain; see Feuling 99530 or 588021.
The kits include: Feuling high-volume oil pump, high-flow alloy cam plate, Reaper series camshaft, hydraulic roller lifters, fixed-length pushrods, Timken/Koyo cam bearings, rocker studs and nuts, gaskets, O-rings, ARP hardware for camshaft/crankshaft, washers, molybdenum lubricant and Loctite.
- Race Series Kits include a Race Series lubrication system: 7075 alloy oil pump, Race Series lifters, high-flow 7075 alloy camshaft plate.
• 7075 alloy oil pump that is 50% harder and more durable than the factory pump, maintaining tighter tolerances under temperature and deeper sump kidneys than the HP+ pump.
• Deeper suction kidney ports than the HP+ series for greater suction flow volume.
• The Race Series hydraulic lifters have a total travel of .200" designed with a slower bleed rate to handle high valve spring pressures, increase engine RPM before valve float, and feature increased roller clearance for steep ramp camshafts and clearance for the front M8 camshaft lobe flange.
Due to the large number of calls and enquiries requesting the O-ring/seal groove for the M8 oil pump rear cover, we have added the groove (11/05/21). Although Feuling's in-house testing on healthy engines showed no benefit. The O-ring may have potential benefits in certain circumstances, such as engines with increased cylinder compression loss, poor sub-seal O-ring, elevated crankcase bore and/or crankcase plug (see M8 PRO TIP below) and wider clearances between the lifter and lifter bore.
OIL LEVEL NOTE - DO NOT OVERFILL THE OIL TANK It is important to achieve the correct hot oil level on your bike. Feuling recommends keeping the oil level at 90%-99% of capacity when hot.
Note: The M8 oil filler is on the right-hand side of the engine. Letting the bike idle or warm up on its side stand will naturally raise the oil in the engine case and skew the level in the tank.
Feuling recommends the following steps to achieve the correct oil level:
1. Check the oil level when cold.
2. Ride the motorcycle until it reaches operating temperature.
3. Switch off the motorbike while it is in an upright position. (This ensures an accurate reading).
4. Once the motorcycle is on the side stand, check the oil level.
5. Add or remove oil as necessary.
EXEMPT FROM EMISSIONS ALTERATION REGULATIONS UNDER CARB EO# D-881-1, Legal in all 50 states, per CARB: CARB EO# D-881-1
Feuling does not recommend tuning the engine beyond the stock emissions standards.


Specifications


Brand
Feuling


Application
17-26 M8 oil cooled, chain Drive (excl. VVT models)


Sales unit
Kit


Packaging weight
5.1 kg


HS Code
84831021


Motorcycle family
SOFTAIL, TOURING, TRIKE


Original name
Feuling, Race Series 472 cam chest Kit, Oil cooled M8