Removing the fan in the winter

[mudgudgeon]

Removal of the fan is an enormously bad idea.

Soooo . . .



You're saying there's a chance it might work?

5 extra HP here we come!

 

[thatcabledude]

Clicked on the thread because I assumed OP had a diesel that was running too cool in the winter and I was going to tell him to place some cardboard in front of his radiator.

Now I’m going to say block the whole radiator with cardboard to simulate no airflow so he can see what to expect without having to actually pull the fan.

 

[tmxmotorsports]

Semi-relevant n=1 observation: I’ve done this about 20 years ago, in my 1985 K5 Blazer - electric fans replacing the stock clutch fan. Lots of space under the hood, 4-barrel carb on an emissions-throttled 350 - so, not the pressure cooker/ high heat environment of the 1FZ in an 80. There was a perceived - but not measured! - increase in power (of course, right… there had to be ), and a very noticeable decrease in engine noise. I really liked how quiet the truck had become. Mileage was a bit better but not by much. And it was all fun and games until the mount for the temperature sensor failed… idling in the driveway, fans didn’t kick in, I caught it at 245F, cooled it down with the garden hose , put the stock fan back in, and motored right on. That engine is still in the truck , so is one of the electric fans, as auxiliary that either comes on with a switch, or when the A/C is on.

This is one of the many reasons I do not use electric fans for mt engine swaps