Quote:
Originally Posted by Stocker
Living in Vegas, you're gonna need all the advantage you can get. That long water pump may make it difficult -- maybe impossible -- to get a fan to sit properly in the shroud. But it doesn't have to be perfectly centered.... close will work. FWIW, my clutch fan mounting surface is 1 1/2" to the water pump pulley. Can't tell how far your fan sits from the pulley -- maybe 2"? -- so you might gain a little going to a clutch fan.
I think at least part of your overheating problem is caused by my sworn enemy, a flex fan. The only time my K20 ever ran hot was when my fan clutch failed and I temporarily ran a flex fan. Some people get by with them but IMHO they just don't cool very well. And there's that little issue of them sometimes exploding....
I would ditch it and get a good heavy duty (not a standard) fan clutch with at least a 6-blade fan. My OEM fan is 7-blade which I prefer, but they are probably harder to find. There are threads here about how to identify the different types of fan clutches. When I have a little more time I'll look it up for you. Right now I'm in the middle of installing a radiator, had to take a coffee break.
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Yes, a properly working cooling system is imperative to living a desert where the summers reach 115°.
My mounting surface is 2" from the pulley. I will take anything I can gain. Do you have the part number for the clutch you're using? As far as the 7 blade fan goes, I'm confident I'll be able to locate one in town. I'll just have to do a little searching.
The long water pump was a huge mistake and has cause all kinds of headaches. Unfortunately, I'm stuck with it now.
The rest of the cooling system is new. I replace the the radiator last summer with a new 4row brass and the thermostat is new. It might be something else but I'm pretty sure this flex fan is the problem