Cooling s52 w/ a/c: electric fan, fan/clutch, fan switch, aux fan?

[dpgrand]

What are people running for cooling these 24 valve engine swaps WITH A/C?
Can I just upgrade the aux fan to something that flows more air, and get rid of the engine fan/clutch?
Should I use the lower temp fan switch?
Do I need a lower thermostat?

[trelms]

I have A/C and an S52 with a SPAL pull fan right behind the radiator. switch on the dash for it. Temp is never more than half. clutch fan and whatnots were all removed. Tstat is factory. hope that helps.

What are people running for cooling these 24 valve engine swaps WITH A/C?
Can I just upgrade the aux fan to something that flows more air, and get rid of the engine fan/clutch?
Should I use the lower temp fan switch?
Do I need a lower thermostat?

[dpgrand]

VERY helpful. Thanks. Anyone else?

BTW - what radiator are you running trelms?

[trelms]

e36

[dpgrand]

oem e36?

[WillisE30]

I'm running an E30 radiator, I replaced it about a week before I pulled my M20, and no mechanical fan. I have the stock AC fan on the front of the condenser currently and haven't had any serious issues with cooling yet. In the summer in stop and go traffic the car does get a bit warm but nothing the heater won't fix. You'll probably want to run an electric fan if you drive in traffic frequently during the warmer months.