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| Is 9/16 too close for a stock 4-blade fan? https://slantsix.org/forum/viewtopic.php?t=23553 |
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| Author: | sixsignet [ Sun Jun 10, 2007 1:57 pm ] |
| Post subject: | Is 9/16 too close for a stock 4-blade fan? |
I'm trying to decide whether to put this stock four-blade fan on with a spacer or without. With the spacer (which is a little under 1 inch) the blades are only 9/16" from the radiator. If I leave the spacer off, it's 1 1/2". If the fan is 1 1/2" away, is that a good distance for a fan shroud? |
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| Author: | emsvitil [ Sun Jun 10, 2007 2:11 pm ] |
| Post subject: | |
9/16 seems a bit close unless you have solid motor mounts..... A shroud should cover half of the blade... |
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| Author: | SlantSixDan [ Sun Jun 10, 2007 2:17 pm ] |
| Post subject: | |
The closer the fan to the radiator, the better the low-speed cooling. The '60-'62 A-bodies have almost no clearance (certainly less than an inch) even without a spacer. But yeah, you've got to make sure your engine mounts are in good shape. |
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| Author: | rock [ Sun Jun 10, 2007 3:03 pm ] |
| Post subject: | I run mine at 1/2 inch, but have goood mounts |
I run mine with 1/2 inch space. I cut and milled a spare long spacer to make it happen. I admit to having gooooood mounts! Never ran over 190 degrees yet even at idle in summer. rock '64d100 |
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| Author: | sixsignet [ Sun Jun 10, 2007 3:11 pm ] |
| Post subject: | |
So is 1 1/2" too far without a shroud? I'll be running it without a shroud this summer. Is a 1/2" spacer recommended (fan would be about an inch away)? The motor mounts are about a year old, but I don't really trust the engine to stand still after I close the hood. |
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| Author: | Aggressive Ted [ Sun Jun 10, 2007 3:22 pm ] |
| Post subject: | |
Mine was the same distance, 1 1/2" with the 4 blade and it ran at normal operating temps. I am now running the Mopar clutch fan and 5 blade sold by Summit and I have less than a 1/2" and am using new mounts. It runs luke warm........145 to 155 with a 195 stat. So it is a little too efficient. New 19" Modine radiator and heater cores. I would think with a shroud you would be fine at 1 1/2". |
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