Flex Fan - Stock or Aftermarket?
Ok, now that I got my fuel questions straightened out and got my system ordered, next part that has been troubling me is the fan aspect.
My truck came with a stock 5 bladed flex fan from Ford, it was for trucks without AC, mine has dealer AC installed. I looked at my parts and illustration guide and there are 3 different fans listed for my application, the 5 bladed flex fan D7TZ-8600-A for non AC trucks, then there is a E0TZ-8600-A that is listed as w/o clutch that is a 7 bladed fan, cant find anything on this so I don't know if this is a flex fan also or if its just a rigid steel fan. last is the D8TZ-8600-A clutch fan that is 5 bladed.
Question is, since my truck is upgraded by the dealership to have AC I am seriously contemplating getting rid of the 5 bladed 18" flex fan in place of the E0TZ-8600-A if it is a flex fan as it has two extra blades and is 1/4" bigger in diameter. I don't think I want to go clutch as I cant find any thermal clutches just RPM based which wont help my AC any.
I know some would want to recommend electric, but for now until I do my 3G alternator upgrade down the road I just don't have the amperage to spare for running an electric condenser fan.
So that leaves me with just the 7 bladed fan. I see Flex-A-Lite has their 1818 flex fan which is a off set 7 bladed 18 1/4" flex fan designed to operate quieter due to the off set spacing just like how my 5 bladed is off set.
Problem is I never used Flex-A-Lite and the only one I have been exposed to is on a old Grumman van we put a motor in at work that had no fan shroud and that thing sounded like a plane taking off.
So my question is between the E0TZ-8600-A which I cant locate any information on let alone find one for sale and the Flex-A-Lite 1818 fan which one would people recommend as giving the best performance in terms of being quiet and not sounding like a plane trying to take off? My 5 blade you don't even hear it and would like to keep it that way.