DO NOT USE COPPER BASED ALLOYS AS CONNECTORS, SO DOING WILL RESULT IN MASSIVE CORROSION OF THE CASES.

The connectors have a 3/4" BSP thread. Do not over-tighten, you will have to replace them in the future, particularly if they are of the Anodic type ( TM 12906). These should be checked every season for corrosion.

You may also use steel / iron connectors. Ensure that the threaded portion of the connector does not protrude through the case into the water cavity, a build up of rust will make them impossible to remove without damaging the threads in the case. Either connector can be used for in / out water flow on all but the offset boxes. On these boxes use the lower connector as the in pipe.

(If wished the cooling can be linked into the indirect Engine cooling system if the engine heat-exchanger is large enough.)

All MK IV Boxes should be cooled.

Lightly loaded MK II boxes may be run without cooling where the Max Revs do not exceed 2000 rpm.

The water cooling chamber should be drained down when laying up for the winter, or anti-freeze introduced into the system.