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oldmotorsguy · 10-31-2023, 08:27 AM

1/4" clearance between spinning fan and radiator fins sounds good. The closer, the better, as more air is moved through the fins, hence better cooling. You are fine with this amount of clearance.

If it really, REALLY bothers you, then simply bend each fin back to allow more clearance. Try to bend each fin equal distance. This will slightly decrease the air flow through the radiator, but you will sleep better at night.

10-31-2023, 08:27 AM	#3
oldmotorsguy Senior Member Join Date: Jun 2010 Location: Crossville, Tennessee Posts: 157	Re: Fan to radiator clearance 1/4" clearance between spinning fan and radiator fins sounds good. The closer, the better, as more air is moved through the fins, hence better cooling. You are fine with this amount of clearance. If it really, REALLY bothers you, then simply bend each fin back to allow more clearance. Try to bend each fin equal distance. This will slightly decrease the air flow through the radiator, but you will sleep better at night.