FEULING LIFTERS HP+ & RACE SERIES (ALL MODELS)

Feuling HP+ lifters Performance hydraulic roller lifters Optimized oil flow to top end - valves, springs, rockers, shafts & valve guides CNC machined and precision ground Drop in replacement for stock lifters with stock or performance cams Dyno developed and track tested Recommended for use with the Feuling Oil Pump or comparable high volume oil pump for maximum benefits Sold in sets of 4 Made in the U.S.A. 1 Year warranty (Optional 2 year warranty if forum is filled out) Feuling Race series lifters  Machined from a cold forged steel body and designed to exceed the needs of larger lift camshafts and higher valve spring pressures with a slower bleed down rate. RACE SERIES lifters maintain proper oil flow to the top end, increase engine RPM, valve-train stability, decreasing valve float promoting maximum valve lift. Due to the unstable nature of the M8 4 valve engine design with 1 rocker arm activating 2 valve springs Feuling highly recommends the use of these lifters for Milwaukee Eight engines running an aftermarket cam and/or higher than stock valve spring pressures. Also recommended for Evo, Twin cam, XL engines using higher than stock valve spring pressure. This lifter will help reduce valve-train separation and can result in a quieter, better performing engine. Race Series lifters are compatible with FEULING OE+, HP+ or Race Series and factory oil pumps and are designed for use with both street and strip engines. Spin-Tron dyno developed and track proven, Made in the USA. Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction High flow disc style quick reacting check valve for better reaction at higher RPM. Sold in sets of 4 Made in the U.S.A. 1 Year warranty (Optional 2 year warranty if forum is filled out) Feuling Race series (Short travel) lifters New revolutionary design with 0.115 of total travel vs. a full travel lifter with 0.200. These hydraulic lifters will increase RPM by decreasing valve float and valve-train harmonics while maintaining a quiet engine. The travel reduction reduces the amount of oil that is required to fill the inside of the lifter which reduces oil aeration inside the lifter on steep, fast action high lift camshaft lobes. When oil aeration is present inside the lifter, the pushrod seat drops when the lifter rolls onto the front cam lobe ramp after squeezing the aeration down thus creating a noisy poor performing lifter. Feuling short travel lifters should be set with 0.065 - 0.070 of pre-load and with the normal engine growth from heat will put the operating lifter pre load at or around half travel. 1 Year warranty (Optional 2 year warranty if forum is filled out)