Colony Hardware Kits for Engine and Drive Train: Knucklehead

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)....

Knucklehead tappet guides are rare bits and examples, that are still in good working condition, are almost impossible to find....

These Knucklehead style cylinder heads are precise reproductions of the stock counterparts and show all the small details like cast-in number tags and foundry markings. Thus they make for great replacements for your worn top end or to build a factory look-alike engine. They are manufactured after 1940-1947 heads with large intake ports. The pre-installed, but unmachined valve seats are sized for stock intake and exhaust valves and hardened for the use of today’s unleaded fuels.

Reproductions of Knucklehead style cylinder heads, cast from aluminum. The advantages of this material are obvious: besides the significant weight savings of approx. 4 kg per head, they dissipate heat much better than their cast iron counterparts. That's why the Motor Company implemented aluminum heads on the follow-up Panhead series....