I'm sure this has been answered in this thread, but I'll ask it anyways as a quick search did not turn up an answer to it. What is the average available space between a stock late model m20 radiator and the waterpump pulley on an S52? My oem aux fan appears to be dead and I'm considering replacing it with either a single 16" pusher fan or switching to a single 16" puller and removing the aux fan entirely. Will this be enough? Ambient temperatures in my area rarely ever exceed 30-35 degrees celsius and I do have AC in my car.
Lastly, I cannot quite figure out exactly what the best temperature would be for my fan switch, I'm definitely going to try and find a dual temperature setup. I know the m20 runs with an 80 degree thermostat from the factory, the s52 runs an 88 degree thermo. Will this make the stock e30 gauge read high when mounted in the head? An 82/88 switch seems too low for this setup, I'm thinking Something more like an 88/92 if available would be better?
EDIT: Found 91/99 degree was the factory aux fan switch for an S52, I may go ahead and just use one of those as I'm pretty sure the car will run cool enough that the low speed setting should keep temps down. If not I'll setup the switch to run on high at 91 degrees with an 88 degree thermostat
Lastly, I cannot quite figure out exactly what the best temperature would be for my fan switch, I'm definitely going to try and find a dual temperature setup. I know the m20 runs with an 80 degree thermostat from the factory, the s52 runs an 88 degree thermo. Will this make the stock e30 gauge read high when mounted in the head? An 82/88 switch seems too low for this setup, I'm thinking Something more like an 88/92 if available would be better?
EDIT: Found 91/99 degree was the factory aux fan switch for an S52, I may go ahead and just use one of those as I'm pretty sure the car will run cool enough that the low speed setting should keep temps down. If not I'll setup the switch to run on high at 91 degrees with an 88 degree thermostat
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