Butler Performance Inc. - Hydraulic Roller Lifters
Hydraulic Roller Lifters- These lifters have the same hydraulic cylinder technology and advancment as the hydraulic flat tappet version but feature a roller in place of the tappet. As the cam turns the roller actually rolls along the lobe for less friction and keeps a zero lash by maintaining hydraulic pressure inside the lifter. This greatly reduces friction so it can produce more power. This reduction in friction also means no need for additional oil additives. Roller lifters are only to be used with roller cams. This type of cam and lifter combination is the most durable setup with the lowest level of maintenance. These can also have valve float in higher rpm applications such as 6,000 rpms or more. To reduce this effect we offer a short travel/high rev hydraulic roller lifter for these high rpm applications.
Hyd. Roller lifters require aftermarket valley pan