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Old 07-03-2012, 06:39 AM
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Cooling fan question

I have a electric cooling fan that will fit into the end of the fan shrod with only a gap of about 3/8 in.In other words it will fill the whole round portion of the shrod.Or should I mount the fan on to the rad.I know that I would have to reinforce the shrod due to the extra weight on it,but this would be easier because the fan is larger than the rad by about 2 in. I would have to mod. the fan housing some to the point it would hang 2 in. lower at the botttom of the rad.

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Old 07-03-2012, 07:07 AM
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From my limited experience electric fans should be mounted on the rad. I have seen custom stuff with the shroud that was built specially for the electric fan though.
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Old 07-03-2012, 08:03 AM
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The closer it is to the radiator the less chance of air being pulled in from the sides. You can fabricate simple side brackets to mount it closer if you're concerned about stress to the radiator core.
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Old 07-03-2012, 10:05 AM
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This is the CCM fan on my '31. I made up 4 small brackets and then mounted the fan and shroud to the radiator frame. Sorry about the photo quality - Photobucket posted it that way:

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Old 07-04-2012, 06:12 AM
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After looking at it agine Im going to mount it onto the rad.Mounting it on the end of the shrod would seem to decrease the amount of pull it would have.
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Old 07-04-2012, 09:26 AM
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Quote:
Originally Posted by dogwater View Post
After looking at it agine Im going to mount it onto the rad.Mounting it on the end of the shrod would seem to decrease the amount of pull it would have.
I disagree, the shroud aids the fan in pulling air ONLY through the radiator.
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Old 07-04-2012, 09:37 AM
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In my experience an e fan shroud should not cover the whole radiator. The shroud i built for my 84 z28 covered the entire back side of the radiator with a single 16 in. E fan mounted to it. It worked very well at controlling coolant temps at low speeds, but once on the freeway it would get warm and not cool back down til i puled off and let it idle for a minute. I then cut off the portion of the shroud that wasnt under the fan to allow air to bypass at highway speeds and there were no more overheating issues, around town or at speed.
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Old 07-07-2012, 08:28 PM
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Well we.ll try this for the third time,Ikeep bening bump off

quickly ,as I wright this because either it wont post or It just disapares being hijacked by pop ups that came out of nowhere.I put the cooling fan on to the rad.right up on to it.An put the oem shrold around it..Had to cut out some of the bottom of the fan shrold to make the oem shrold fit tight onto the rad.I took it out for a drive,just wiring the fan up to my power wire,no over heating problems.I wish I had someone other Camaro to compare to because in my mind mine is spintert musulec clunching fast. If I can get the revs. up to around 2600 rpms. It will fly.I need to keep an eye on my rpms.because Ive gotten it into the 5500 range wheir I have the rev limter set at.But dam its fast,I really want to compare it to something elas.Have a damm nice Sunday,IM not doing nothing,just gunna stay out of the heat.

Last edited by dogwater; 07-07-2012 at 08:43 PM.
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