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#68118 11/02/2006 10:16 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | The trick is to move the switch. The fan switch should go on the radiator side of the thermostat, not in the block. You want the block/head to always be at 180, this is what the thermostat is for. Adding a fan switch that only comes on at 195 means the water in the head has to get up that hot.
Move your switch so it senses the temperature of the radiator water. Either drill and tap the water neck on the radiator side of the thermostat (some housings already have a hole here) or the radiator itself.
I use a radiator mounted fan switch that has a probe that attaches to the top tank. It works great.
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