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Attaching an electric Dual Fan

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Old Oct 31, 2017 | 08:07 AM
  #1  
rhett838's Avatar
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68 Cutlass S Convertible
 
Joined: Jun 2009
Posts: 258
From: Euless, TX
Attaching an electric Dual Fan

Hello!

I have a 68 Cutlass Conv with a 350. I recently purchased a dual fan from Jegs to keep my car from overheating at the stop lights in the Texas heat.

Im also switching to an EFI system. B/c of that, I gave the fan to my mechanic to install also.

He says there's nowhere on the car to attach the mounting brackets that came with the fan. He has to fab some.

I have a traditional cross flow radiator.

My question: Is there a place he can attach the brackets to? Is there a bracket kit that'll work with Olds, or do the brackets have to be fabbed?

Below is a link to the fan I purchased.

Thanks for your help!

http://www.jegs.com/i/JEGS-Performan.../-1#tabpanel-6
Old Oct 31, 2017 | 01:42 PM
  #2  
olds 307 and 403's Avatar
Out of Line, Everytime😉
 
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Posts: 9,971
From: Melville, Saskatchewan
Hopefully they pull in enough air. The good ones draw about 50 amps.
Old Nov 1, 2017 | 04:58 AM
  #3  
rustyroger's Avatar
'87 Delta 88 Royale
 
Joined: Dec 2010
Posts: 2,514
From: Margate, England
I suppose I could say fix whatever lets it overheat with the factory setup.
But that dead horse has long ago been dragged off to the knackers yard.

What the heck, why not fix whatever is wrong with the factory setup?.

Normally these posts show up at the beginning of summer.

Roger.
Old Nov 1, 2017 | 05:44 AM
  #4  
oldcutlass's Avatar
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From: Poteau, Ok
Its hard to give an honest answer without seeing what the mechanic sees.
Old Nov 1, 2017 | 06:03 AM
  #5  
toymobile's Avatar
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Posts: 920
From: N. FL 32091
If you do away with your fan you will need one of these.

I only have this one left, send me your address and I will send it to you.

Johnny
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Old Nov 1, 2017 | 06:39 AM
  #6  
oddball's Avatar
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Posts: 2,146
From: Plano, TX
1) I'm in DFW, and the stock setup is actually quite good. You need the clutch, the large fan, and a shroud. You should hear the fan get extremely noisy when the car gets hot - that's when the clutch engages. If it never does, then the clutch is shot and that's a good reason for it failing. You can also tell the difference between "slipping" and "locked" on cold days. The clutch will be sluggish when cold, so you'll get tons of airflow. Once heat gets into the radiator, the clutch warms up and will start slipping. Until the car gets too hot.

2) You don't need the spacer if you replace the studs with some 1/4" fine thread bolts/screws.

3) Yes, you have to get creative on mounting the fan. Usually you can use the existing bolt tabs to go into the shroud and use captive nuts on the shroud - just like the stock mounting. If the new shroud isn't the right size/shape, then you have to make something. That's very normal.
Old Nov 1, 2017 | 07:44 AM
  #7  
Olds64's Avatar
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Posts: 18,133
From: Edmond, OK
Why not just use these to install the fan?

https://www.summitracing.com/parts/sum-g4990/overview/
Old Nov 1, 2017 | 07:53 AM
  #8  
rhett838's Avatar
Thread Starter
68 Cutlass S Convertible
 
Joined: Jun 2009
Posts: 258
From: Euless, TX
Originally Posted by rustyroger
I suppose I could say fix whatever lets it overheat with the factory setup.
But that dead horse has long ago been dragged off to the knackers yard.

What the heck, why not fix whatever is wrong with the factory setup?.

Normally these posts show up at the beginning of summer.

Roger.
I'm doing this in response to an entire summer of driving. I took my car to work often. It also has AC, so that heats it up a bit too.

I switched out the regular coolant with Evans waterless, and that actually helped a bit, but it's not enough.

I understand the want to preserve these cars as they came out of the factory, but let's face it the way they came out in 68 doesn't lend to today's driving styles.

I want to drive my car often, to and fro work, reaching 70mph in some spots,40 miles a day. I did that this summer...it overheated a little, so now I'm trying to fix that.
Old Nov 1, 2017 | 07:55 AM
  #9  
rhett838's Avatar
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68 Cutlass S Convertible
 
Joined: Jun 2009
Posts: 258
From: Euless, TX
Originally Posted by Olds64
Why not just use these to install the fan?

https://www.summitracing.com/parts/sum-g4990/overview/
It's funny you mention Summit, b/c they just built a GIANT warehouse near me. I picked up some brackets there yesterday...I dropped them off at the mechanic this morning, and he said he already had the fan mounted securely...
Old Nov 1, 2017 | 07:59 AM
  #10  
oldcutlass's Avatar
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I need to sneak over to the new Summit and check it out.
Old Nov 1, 2017 | 08:03 AM
  #11  
rhett838's Avatar
Thread Starter
68 Cutlass S Convertible
 
Joined: Jun 2009
Posts: 258
From: Euless, TX
Originally Posted by toymobile
If you do away with your fan you will need one of these.

I only have this one left, send me your address and I will send it to you.

Johnny
Thanks!

What does it do?

Here's what it looks like now.
Old Nov 1, 2017 | 08:08 AM
  #12  
BangScreech4-4-2's Avatar
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Make sure you keep all the factory bits. Might make it easier to sell when the time comes.
Old Nov 1, 2017 | 08:21 AM
  #13  
toymobile's Avatar
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Joined: Sep 2011
Posts: 920
From: N. FL 32091
Originally Posted by rhett838
Thanks!

What does it do?

Here's what it looks like now.
Supports the pulley, I had a center brake out before I realized that it needed some support with the fan clutch removed.

Johnny
Old Nov 1, 2017 | 08:37 AM
  #14  
Olds64's Avatar
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Posts: 18,133
From: Edmond, OK
Glad your mechanic got it working.
Old Nov 1, 2017 | 12:52 PM
  #15  
redoldsman's Avatar
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From: Rowlett, TX
Originally Posted by Olds64
Why not just use these to install the fan?

https://www.summitracing.com/parts/sum-g4990/overview/
Those are not the most recommended way to attach a fan. There is a lot of vibration from the fan and they can eventually rub a hole in the radiator. That is what a reliable radiator shop told me.
Old Nov 2, 2017 | 05:20 AM
  #16  
Olds64's Avatar
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Posts: 18,133
From: Edmond, OK
Originally Posted by redoldsman
Those are not the most recommended way to attach a fan. There is a lot of vibration from the fan and they can eventually rub a hole in the radiator. That is what a reliable radiator shop told me.
That makes sense. I suppose one could put generic weather stripping between the radiator and the electric fan. That would cut down on abrasion and rattles.
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