Join Date: Dec 2011
Location: Clarksville, Texas
Re: Overheating 390 engine
PSIG, the fan is pulling air thru the radiator, it is doing what it is supposed to do.. The lower hose has a spring in it, so don't think it is collasping. The advance you are talking fits mine, running hot and crappy fuel milage. It is hooked up to straight manifold vacuum, don't hav a port on carburator to hook to, so it at full advance all time, keeps it all up to about 3000 rpm, didn't check any higher. My centrifical has been reworked, comes in a little quicker. Can i just unhook vacuum advance, work the timing just thru the mechanical?
RAGGAREN, i am not real good with pictures, will try to get my g/daughter to help me get one on here. It is a puller fan, mounted between engine and radiator and is doing what it is suppose to do. It is wired correctly, and it does cool down as you slow down, don't have to shut the engine off. The shroud covers the complete radiator, with a hole cut in the middle where the fan bolts to it. Could be a problem there, maybe restricting flo at speeds. It does stay cool sitting at idle, and slower speeds, so that should elimate the fan
Last edited by poppy 4198; 12-27-2011 at 06:43 PM.