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Replace Viscous Fan With Elec Using Existing Rad Fan Wiring

mrsr32

By mrsr32,
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mrsr32 Rising Star

mrsr32

Posted
Posted

I don't have ac on my car any more and want to fit a elec fan and ditch the viscous

Has anyone done this and use te existing rad fan 25a fuse and relay. Just need a temp fan controller to wire into it I'm assuming?

mad082 Grand Master

mad082

Posted
Posted

the existing fan wiring isn't all that suitable for running thermos from memory, as it runs of a little bit higher temp than what you really want.

as for cooling fans though, you are better off with the viscous clutch fan. the power loss of them compared to a thermo is bugger all, and they work just fine. if you are adamant on going thermo though, either go a big single, or a GOOD set of twins that have a shroud already fitted (without a shroud you will cook the engine very quickly, probably in your first drive). something like the thermos from a late model falcon are a good choice (and have been used before by other members on the forum). or some other factory thermos from fwd cars would also do the job

mrsr32 Rising Star

mrsr32

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Posted

I have a 40mm radiator which has no shroud. The previous owner clipped the blades to get clearance for the thicker radiator

I only want to use the existing wiring for relay and fuse. I want to control it with a separate fan controller

Daleo Grand Master

Daleo

Posted
Posted

Get yourself a gktech highflow fan & a VL fan clutch. This will be shorter than your current setup, and will work extremely well with a factory fan shroud.

Thermos are a waste of time, and cannot match a clutch fan for airflow.

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