Overheating Issues, Perplexed

[Mdman352]

What is the cfm of the Taurus fan? I have a Summit racing shroud and fan rated at 3150CFM and I am over heating big time. The fan kicks in at 180 and in traffic the temp just starts climbing. I am using distilled water with water wetter. any help would be appreciated. 427 FE.
David

[undy]

Originally Posted by Mdman352

What is the cfm of the Taurus fan? I have a Summit racing shroud and fan rated at 3150CFM and I am over heating big time. The fan kicks in at 180 and in traffic the temp just starts climbing. I am using distilled water with water wetter. any help would be appreciated. 427 FE.
David

3500 to 4500 CFM, depending what discussion you subscribe to. I've heard 5000+ for the Mark 8. IMHO, Flexalite and a lot of other aftermarket fan mfrs tend to over rate their fan CFMs. I think you'll find that the Taurus or the MK VIII fan will kick CFM butt, compared to that Summit special.

Dave

[DAVID GAGNARD]

What Undy said is dead on.........
Distilled water and water wetter is good, but I would also add about one gallon of good anti-freeze, I've found this to help a lot.... On one vehicle I worked on, just the anti-freeze alone was good for almost a 10 degree drop in temp.......Plus it helps lube the water pump and slows down corrosion in the block......

David

[Thoroco]

Originally Posted by undy

3500 to 4500 CFM, depending what discussion you subscribe to. I've heard 5000+ for the Mark 8. IMHO, Flexalite and a lot of other aftermarket fan mfrs tend to over rate their fan CFMs. I think you'll find that the Taurus or the MK VIII fan will kick CFM butt, compared to that Summit special.

Dave

I have to agree. I don't know the true cfm but no aftermarket fan under $300 even comes close to the Taurus or Mark VIII.

[twobjshelbys]

Here is an interesting thing. As soon as I get mine home from a drive where the gauge went hot, as soon as I got home I put my hand on both sides of the radiator and it is cool. It's doing its job.

I'm still getting a little blow by - the coke bottle had an accident on Monday - but it was over 90. The bottle is about 1/2 full and the tank at cool is also 1/2 full. I still think this is the right track.

I ordered a 160*F high flow thermostat and 22/24lb cap from Summit racing today. Should be here Thursday.

[Monster]

Notes on "Antifreeze"
The MAIN purpose of "Antifreeze" is to lower freezing temp, A side affect of the Propylene glycol & Ethylene glycol (the primary ingredients in "Antifreeze") is that they also raise the boiling point ( the point at which the liquid becomes a gas).

This does not mean that it (antifreeze) makes a car run cooler, it means that it increases (raises) the point at which the cooling system water will boil.

It (antifreeze) does not significantly increase or improve the "convective heat transfer" capability of water (the ability of water to exchange heat). Convective Heat Transfer is whats key in getting your car to run cooler.

Here are some links to comparitive tests of "water", "water wetters" and "antifreeze mixtures". Note the running temps recorded.

redlineoil: whitePaper

turbomagazine: cooling system additives test results

hope this helps,
mike