Cala’s High Performance

Reproduction of the cast iron manifold for WLDR/WR Class C race bikes as well as for K and KR models.

Thermal insulator block for Linkert M-series 3-bolt carburetors and Schebler DLX that mounts between the carburetor and the manifold. Included are 2 O-rings, as well as a spacer that fills the recess on stock manifolds and eliminates the cavities between the manifold and the insulator block.

Cala's version of the thermal insulator first used on Panheads. Instead of being used between two gaskets it features a double o-ring seal thus providing a superior seal between manifold and carburetor. Fits any Linkert 4 bolt application.

This kit comprises two levers, a ball end rod and springs to connect two Linkert carburetors in dual carb set-ups. Designed for pull-action throttle grips or spirals.

It’s a fact: when pushed, those trusty Flatheads get hot, or very hot to put it bluntly, which is also a result of low oil pump volume and pressure. The CHP pump is a once and for all cure for this problem. While looking stock on the outside it substantially raises the capacity of the engines lubrication system with its internal modern gerotor technology. Oil pressure with hot engine is typically around 30 psi, instead of 5 psi with stock pumps. Feed volume is about 1 quart per 45 seconds, while original pumps need 7-10 minutes for this. As a result the engine runs smoother and cooler and can handle more power without problems. Installation is easy as this is a a true bolt-on unit.

The perfect complement for the CHP feed pumps to compensate for the increased supply volume. The wider gears of the CHP scavenger pump effectively raise the return oil volume by about 40%. Will also work with stock feed pumps, of course. Installation is easy as this is a a true bolt-on unit. The Big Twin version features a 10° angled fitting so the oil line clears the frame.

With the CHP pump installed oil feed volume is substantialy increased and the stock scavenger system might reach its limit. This conversion kit for the scavenger pump raises volume by about 40% for a more effective oil return. It includes all necessary longer small parts.

For performance engines. These special relief valve springs are a tad stiffer than the standard springs in CHP Flathead oil feed pumps and will raise oil pressure by 5 psi.

Gasket by Cala’s High Performance; for Gear cover; fits Sidevalve Big Twin 1937-1948; paper; 0.30 mm thick; replaces OEM HD 25227-37; gross weight: 100.2 g