I have bought an in line fan switch to mate the blade engine to a clio rad. The switch operates quite low @ 90/ 85, (I'm at work, it's at home, so can't check)
So the stupid question is, which pipe does it go in, the return or the feed. I naturally thought it was the feed but now think it might be the return as the fan will come on as soon as the thermostat opens. As I am wiring it up when I get home this afternoon, it might be a good idea to plumb it into the right place

Sounds sensible to me...

It needs to go in the feed (top hose), or the fan will only switch on when it has overheated.

ideally in the head, so put it as close to the head as you can, that way you get the most accurate reading for temperature of the engine as opposed to temperature of the water as it gets towards the radiator.

I have mine in the thermostat housing but was in the top hose before that.

quote:

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Originally posted by locoboy
ideally in the head, so put it as close to the head as you can, that way you get the most accurate reading for temperature of the engine as opposed to temperature of the water as it gets towards the radiator.

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Top hose it is then. Makes sense now!
cheers chaps
note to self
move fan switch from bottom hose