Feuling, HP+ Lubrication System. Oil-cooled engines

Compatible with chain and gear drive camshafts. Complete Feuling kit with HP+ oil pump, high flow camshaft support plate, HP+ series hydraulic tappet set and quick-install camshaft gasket set.
The FEULING OIL COOLED lubrication system kits combine all the components needed to complete the lubrication system of your M8 engine under a single part number, available in HP+ or RACE SERIES kits. FEULING lubrication system kits increase oil pressure, oil volume, engine oil flow and return oil scavenge.
• Quieter and smoother engine operation • 27% more pressure and scavenge gear volume compared to stock • 42% more scavenge volume through port sizing, matched passages and holes in the engine case • 46% more oil volume to the crankshaft and connecting rod bearings • Engine temperatures 15-25 degrees cooler • Oil temperatures 15-30 degrees cooler • 10-30 additional PSI of oil pressure • Reduces wet sumping, blow-by and oily air filters • Test results show a gain of 2 HP and 2 ft/lbs. of torque at the rear wheel on Milwaukee Eight • NOTE: FEULING test results show up to a 50% reduction in crankcase oil level.
Both the HP+ and RACE SERIES kits include the FEULING high-flow camplate made from 7075 aluminium, which is 50% harder and stronger than factory OE+ or Feuling camplates. FEULING increases oil flow and volume by enlarging the oil pump reservoirs and critical oil passages, including matching the oil port holes throughout the camplate to the holes in the engine case, which increases engine oil flow to the lifters, piston cooling jets, crankshaft and connecting rod bearings.
FEULING oil pumps are bench tested; the relief valve is seated and sealed at a minimum of 30 psi with full opening at 55-60 psi. The greater oil volume from the larger gears and correctly sized passages, along with the pressure relief valve seat and seal of these oil pumps, is essential for the correct operation of the lubrication system. The combination of the FEULING oil pump and cam plate eliminates the common pressure and scavenge issues associated with factory lubrication systems.
Due to the large volume of calls and enquiries requesting the O-ring/cover seal groove on 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 greater compression loss per cylinder, poor sealing of the 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.
- The HP+ SERIES kits include a 6061 forged aluminium high volume oil pump, FEULING high flow cam plate, HP+ hydraulic roller lifters, camshaft installation kit, camshaft bearing, camshaft/crankshaft bolts and washers, and assembly lubricant for the engine and fasteners.
OIL LEVEL NOTE - DO NOT EXCEED THE OIL TANK OIL LEVEL It is important to obtain 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 sump is on the right-hand side of the engine. Letting the bike idle or warm up on the side stand will naturally fill the sump and distort the oil level in the tank.
We recommend 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 whilst it is still in an upright position. (This ensures an accurate reading) 4. Once the motorbike is on its side stand, check the oil level.
5. Add or remove oil as necessary.


Specifications


Brand
Feuling


Application
17-25 M8. Oil cooled models


Sales unit
Kit


Packaging weight
2.814 kg


HS Code
84133080


Motorcycle family
SOFTAIL, TOURING, TRIKE


Original name
Feuling, HP+ Oiling System. Oil cooled engines