Typical closed loop cooling system with the water jackets connected in parallel.

Coolant enters at the bottom of the jackets to guard against air entrapment. WPT recommends low pressure and high temperature warning devices in the cooling system.

The water jackets may also be connected in series as shown in the series diagram. A center water jacket will generate roughly twice as much heat as the front or back water jacket. Coolant volume should be provided accordingly.

There are many ways to provide coolant to the unit but it is most important to maintain adequate flow.

If the unit is used as a clutch, consult WPT for additional requirements.