Mid-range stock thermostat fitted until 1990 1275cc.
The lowest thermostat available is 74 degrees and should be the lowest one considered - 82 degrees is a much better choice with an 88 degree alternative for winter driving and those with economy as the main consideration. The higher temperature the more thermally efficient the engine becomes. It is possible to run thermostats with the troublesome bypass hose blanked off by drilling 4-6 holes 1/8" in size around the periphery of the thermostat.