viscous fan blades

Aren't ALL fan blades vicious?

Oh... I get it...viScous....

Sorry.....

Your engine would definitely overheat if you left the tarp on. You don't really have a choice except to tarp up and fold and store wet. A cowling wont help the situation but I would of thought there should already be one on the radiator.

Leroy

I had a Hilux a number of years ago that I took the viscous fan completely off and put in an electric thermo fan. I wired it to a switch in the dash and I could just switch it off and on as I liked. Great if you are doing numerous water crossings. I also noticed a little bit more power after removing the fan. It was the old 2L model so every little bit helped. I don't think the cowl will help as the problem is the fan acts as a propellor once the water gets up to it and the blades then bend and pull themselves forward into the radiator

Cheers Tony

If you're somewhere where you need to worry about a crossing, surely you'd have a tarp and rope in the back ? One method is to drill a small hole in the blade and tie the blade up temporarily....but it sounds an "interesting" approach. I wonder if the hole might unbalance the blades ?

the time taken to stop and tarp up might even allow things to cool down so you don't do more damage by just charging in.
i only use a plastic tarp, just a little one so it doesn't hold water and could be stuffed between the spare and the door or similar if you're worried about it being wet.
slow down soldier. slow and steady wins the race as they say

The blue plastic tarps of appropriate size cost about 2-3 bucks and can be stored in waterproof green plastic bags that everyplace i work has 000s If it goes mouldy just buy another

I'd go the electric fans - easier to turn off and don't drain the power from the motor.
Techie