05-04-2019, 11:06 AM
Graham use 1/8" or 3.5mm width O-rings each end of cam bush (see photo) use a 1/8bsp socket blank plug drilled with a 1/6"or 1.5mm hole in the cam oilway tap 1/8bsp through the side entry of the gallery into the oilway deep enough to take the plug locktite in place. The rear cam bush can be reversed and drilled 2mm add a chamfer to clear the gear. The rear main bearing drain hole drill out to1/4" and notch seal plate to match, use a metric viton seal. Increase the size of the relief valve drain hole to 5/16" to stop back pressure to the pump, and make the relief valve adjustable.