Mechanical fan + pusher fan question
“ overdrive the fan”…… explain…….. us a smaller pulley ………. Rev the engine at idle
Yes and yes.
I got stuck in line at in -n-out in 90 deg weather.
The temp in my stock 273 2bbl (OEM copper brass HD cooling rad, fixed 7 blade fan, no shroud) started to climb, I'm not one to worry about the exact temp but the range. As it started to approach the higher end of of the factory scale I decided to add some RPM to see if I could get the temp down.
Low and behold I got it down to the normal driving range.
I don't have a tach but would assume 2000 rpm.
So 2 things came into play...
- The pump was circulating more fluid through the cooling system
- The fan was pulling more air through the radiator.
Which was the most important I have no idea.
You could try a heavy duty fan clutch if you haven't already
Assuming the OP has a clutch fan this might help and getting a more aggressive fan blade pitch might help too.
On a 96 Jeep GC, I thought the clutch was failing as temps rose more than I liked on a 95 deg day in a fast food line. ( I know, there is a team here) so I researched and found a aftermarket replacement for max cooling / A/C clutch. And after install the only difference I noted was the jet aircraft under the hood.
