Re: Adjusting a Fan Clutch
Installed my new clutch fan assy., Hayden 2747 and also a new 19” Hayden fan. Removed my shroud and reinstalled it with some thin weather stripping foam sealer for a nice tight fit against the radiator with no air gaps.
I can definitely hear that “school bus” or “garbage” truck sound coming from the new clutch fan assy. Didn’t hear that with the old one. The car runs cooler while cruising, about 10 – 12 degrees (180-185), but still heats up to about 205 while coming to a stop. So while I reduced my temp when driving, the new setup didn’t really change anything when idling. Which is odd, as I thought my problem was the old clutch assy. Not working properly to draw air through the radiator while stopped. Oh well. It still burps out radiator fluid after cruising for a while and shutting it off.
My Chevelle is an A/C car, so perhaps the condenser isn’t allowing enough airflow. I’m also going to change the thermostat to a 160 high-flow (currently a standard 180) and see if that helps. The radiator is a 4 row heavy duty unit in rather good shape. But perhaps it’s time to change it as well.