CHP Scavenger Pumps for Flatheads

On Harley-Davidson Flathead engines, such as the UL and WL models, the engine can overheat under heavy load because the flow rate and pressure of the original oil pump are limited. The CHP high-performance oil pump solves this problem: it retains the classic stock pump design but works internally with modern gerotor technology, significantly improving the efficiency of the lubrication system....

Reproduction crankcases which meet or exceed highest restoration demands. Cast from state-of-the-art materials and machined on CNC equipment for strength and precise fitment. Intended to work with stock or identically constructed engine components. Finished and detailed like the original counterparts so these cases will smoothly blend into your old mill to give it a new life. For ease of installation both case halves are carefully matched and feature pre-installed case bushings, which are line bored and lapped for standard rollers. Cam bushings are already in place and reamed. (For exact measures pls see facts)....

Aluminum cylinder heads for side-valve engines. In air-cooled engines, material with good heat dissipation is of great importance. When heat builds up, it results in power loss. Higher compression is meant to produce more power, but higher-compression engines run hotter. That’s why, starting in 1940, Harley-Davidson equipped the higher-compression side-valve engines (5:1 and above, with the standard being 3.6:1–4.5:1) with aluminum cylinder heads. Aluminum dissipates heat better than cast iron. The heads offered are supplied in pairs.