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Username Post: Dual radiator fans        (Topic#350613)
postalcop 
"3rd Year" Silver Supporting Member
Posts: 128
postalcop
Loc: MO
Reg: 06-01-12
04-13-18 02:59 PM - Post#2730882    

I have been looking for a dual fan set up for my radiator. I do not have enough room between my 6.0L motor and the radiator for my current fan. I also cannot mount the fan on the front of the radiator as I will be having a condenser for a/c there. I was looking at the ebay fans but figure they may not be worth the cheap price. I was wondering if anyone had any suggestions on some decent 10" fans. I only have about 3 inches between the water pump and radiator and have the engine back as far as it can go without modifying the firewall.

53 Chevy 210
350 engine / 350 trans
3.42 chevy s-10 rear axle


 

Tri5man 
Valued Contributor
Posts: 3545
Tri5man
Loc: Possums Crotch, KY
Reg: 06-26-07
04-13-18 03:11 PM - Post#2730883    
    In response to postalcop

Ten inch Spal Fans is the only ones I'd use.



 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4110
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
04-13-18 04:48 PM - Post#2730887    
    In response to postalcop

Hi Postal, The smaller fans are considerably less effective than single large ones.
Can you put a big one on a frame that pushes through both the evaporator and radiator.

Alternately you will probably need heavily shrouded 10" pairs to do the business. Not a big box but good aero shape in the fan housings.

Can you separate trans and add oil cooling to help?
How many HP is the 6.0?
Can you post pics?

Cheers kiwi




48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
postalcop 
"3rd Year" Silver Supporting Member
Posts: 128
postalcop
Loc: MO
Reg: 06-01-12
04-13-18 08:43 PM - Post#2730913    
    In response to Bel Air kiwi

After getting the suggestion on the Spal fans, I found this setup on Speedway. Hard to tell if it would work or not without having it.
Speedway 10" dual fans

I would rather put a single fan on but there just isn't room. Not sure if there will be enough room in front with the condenser either. The fan I have is 4 1/2 inches thick and I am using a 3 row champion radiator. HP to the rear wheels should be between 300-350, depending on if I put a cam in or not. It might be a couple days before I could get pictures up.

53 Chevy 210
350 engine / 350 trans
3.42 chevy s-10 rear axle


Edited by postalcop on 04-13-18 08:44 PM. Reason for edit: No reason given.

 
Skip 52 
Senior Member
Posts: 326

Loc: triangle Va.
Reg: 04-02-00
04-14-18 05:03 AM - Post#2730930    
    In response to postalcop

You need to check this unit out. I have used this on several street rods that my friends have. one of the best on the market

https://www.speedwaymotors.com/Cooling-Components-...



Edited by Skip 52 on 04-14-18 05:04 AM. Reason for edit: No reason given.

 
50sChevys 
"15th Year" Gold Supporting Member
Posts: 2087
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
04-14-18 09:24 AM - Post#2730950    
    In response to postalcop

Here’s my application with the two 10” pusher Spal fans and an aluminum Superior radiator. They deliver a total of 1604 CFM. The low profile aided in allowing the radiator to be moved forward to compensate for the 2” longer GMC than the original 216. Must say that proper engine tuning and the enhanced cooling of the aluminum radiator reduces the need for assistance from the fans. They rarely kick on even during the Texas heat.

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50s Chevys


 
cbmkr56 
Silver Supporting Member
Posts: 1030
cbmkr56
Age: 62
Loc: Basehor Ks
Reg: 02-11-13
04-15-18 06:24 AM - Post#2731020    
    In response to postalcop

I used dual 11" on mine with A/C works great did the same on my son in laws 51 sedan. I wired the power direct thru the temp controller. It runs after you shut down until it's below on temp.



 
postalcop 
"3rd Year" Silver Supporting Member
Posts: 128
postalcop
Loc: MO
Reg: 06-01-12
04-15-18 12:27 PM - Post#2731048    
    In response to 50sChevys

I like that. Did you make the brackets for mounting the fans? I could fit those on the engine side.

53 Chevy 210
350 engine / 350 trans
3.42 chevy s-10 rear axle


 
50sChevys 
"15th Year" Gold Supporting Member
Posts: 2087
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
04-15-18 02:47 PM - Post#2731068    
    In response to postalcop


Yes, I fabbed those out of 1/8” aluminum left over from one of our aircraft builds. The 4 attaching brackets came with the custom radiator I had built at Superior. Here’s a close up..



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50s Chevys


 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4110
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
04-16-18 05:44 AM - Post#2731133    
    In response to 50sChevys

Hi 50sChevy, I understand that you have forward mounted the radiator for the GMC length.

Is that as high as you can mount your fans?

Is there a reason you didn't go for a larger single fan?

Are you aware the aftermarket rates the CFM flow of their fans in free flow condition. That is not in situation?

Hi Postal cop, I definitely would not use that Speedway motors setup. What they are calling a shroud is just a box mount. Cheap and nasty, and a detriment to proper airflow. You may as well just put a piece of cardboard across the front.

I understand these mounts are common in your market but they are just rubbish for cooling. the only possible application would be Alaska in winter.

If you are forced to use two small fans the 50s Chevy's style of mount is superior.

Proper shrouds are supposed to be an aid to the aerodynamic efficiency of the fan. That is they reduce spillage off the blade tips and can also redirect some air through carefully shaped housings.

If you don't believe me, try and find a simple box shroud on an credible OE vehicle?

Cheers Kiwi

48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


Edited by Bel Air kiwi on 04-16-18 05:50 AM. Reason for edit: No reason given.

 
50sChevys 
"15th Year" Gold Supporting Member
Posts: 2087
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
04-16-18 10:26 AM - Post#2731168    
    In response to Bel Air kiwi


KIWI, the fans are mounted as high as practicable due to interference with the hood latch plate. The upper left corner of the latch plate has been clipped to allow for the current mounting position. A single fan was out of the question. The 10” fans were the proper option considering spacing and fitting the radiator width itself. As I said, they rarely come on and were selected using fitment as the primary criteria and not CFM, i.e., what you see is what you get in this situation and it’s worked out very nicely regarding performance.

50s Chevys


 
GreatNorthWoods 
"4th Year" Silver Supporting Member
Posts: 825
GreatNorthWoods
Age: 75
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
04-16-18 04:31 PM - Post#2731204    
    In response to postalcop

When you mount the condenser, be sure to leave a gap of about an inch between the condenser and radiator. This will improve radiator efficiency.

Vern

1953 Chevy Belair Sport Coupe - 350 Crate Engine,700-R4, Vintage Air, EZ Wire, Ididit column, Cruise/Tilt, 4-Wheel Disc Brakes, Nova 10-bolt, Chassis engineering front suspension.


 
Mike JW 
"6th Year" Gold Supporting Member
Posts: 1302
Mike JW
Loc: Arroyo Grande, CA
Reg: 01-19-06
04-16-18 06:00 PM - Post#2731217    
    In response to GreatNorthWoods

I don't see an AC condenser on 50 chevy's car so the 2 ten inch fans may work great, but throw in a AC condenser between the fans and the radiator and I don't think so. My electric fan worked great until I added air and put the condenser in front of the radiator. Then unless I was going down the road it would heat up real quick.



 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4110
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
04-16-18 07:42 PM - Post#2731224    
    In response to 50sChevys

Hi 50's Chevy, I thought that might be the case and I understand that what you have done is a very tidy version of the best solution in the situation you were faced with. Great to know it works well for your application.

Your beautiful 302 GMC makes me feel inadequate having only a 261.

Cheers Kiwi

48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4110
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
04-16-18 07:57 PM - Post#2731227    
    In response to Bel Air kiwi

Hi Postalcop, can you post some images of your situation?
If you can fit your 10" fans on the inside then mount them as high as possible, as this is where they will do the most good.
Sometimes they have to go slightly over the top tank edge to clear the water pump stub below.
You often have to work this in by having alternator, power steer pumps, and a/c down low.

What determines how much heat you will make is how much Hp you make at or near a stationary situation. In part this is a function of the accessories running at the time.

To mitigate this you can turn off the A/C at idle or in slow traffic. You could separate your trans cooling from the radiator. If it's 1-2 shifting when crawling then lock it in one gear as repeated shifting makes heat, as does lugging in gear. So lock it in low.

You may find you could also fit two 8" fans or similar down low to give you a safety margin. maybe link them to the A/C and the main ones to the engine.

Cheers Kiwi


48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
50sChevys 
"15th Year" Gold Supporting Member
Posts: 2087
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
04-16-18 10:46 PM - Post#2731243    
    In response to Bel Air kiwi

KIWI, I have a hard time imagining you feeling inadequate very often! Lol. However, I’m glad you approve of my particular setup and car in general.

BTW, where I have worked these last few years, we have several company wide slogans and one of them is, “ There are no problems...only solutions.” and, in restoring these WWII Fighters...P-51s, F4U Corsairs, F-6 Hellcat, F-8 Bearcat and P-38s... there are lots of problems we have to overcome. For example these two oil cooler radiator ducts in the inner leading edge of the wing had to be fabricated from scratch...not for the faint of heart. That certainly carries over to most of the things we do with these cars...alththough not as drastic maybe, but you just have to stay at it until you figure out what is going to work...lots of trial and error. Blueprints for these aircraft have been provided by the Smithsonian Institute.


Anyway, good luck to Postalcop and other members with their cooling problems as stated above and excuse my brief digression, but just wanted to make a point. However there is a solution...he’s just got to figure it out.


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50s Chevys


 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4110
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
04-18-18 04:42 PM - Post#2731472    
    In response to 50sChevys

Hi 50's Chevy, That's a good one! :rotfl

Just out of interest I live about 1/2 mile from the local aircraft museum. It's not very big but does have some one left planes. There is a Spitfire on a stand outside but it is fiberglass now as it was discovered that the air-frame was of quite low hours and it was taken down, replicated and the original was fully restored to airworthy condition.

If you are ever down this way call in and I will take you there. I would also see if we could get into the Mosquito factory where they make exact new wooden air frames for these planes. There are also some unique flying boats here that used to do the LA, Hawaii, Fiji, Sydney, Auckland run.

You may have heard of Warbirds over Wanaka, this is in the South island but is a great event.

Cheers Kiwi

48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
50sChevys 
"15th Year" Gold Supporting Member
Posts: 2087
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
04-18-18 09:45 PM - Post#2731509    
    In response to Bel Air kiwi

KIWI, I know the Wanaka show is a great big event and well known in warbird circles. Our annual show is small by comparison but has the reputation of being ‘a Pilot’s Airshow’...that is, small town, wide open uncluttered airport, lots of Warbirds, aerobatics, and home of the CAF’s West Texas Wing’s ‘Big Iron Squadron.’ I flew in the show back in the 80s for several years in my AT-6 and Pitts Special. The show’s back now after a lengthy absence after 1998.

You mentioned the Spitfire. Last week, an 18 wheeler dropped off this container in front of the big hanger. Inside is a complete Spitfire fresh from Europe after flying in the recent movie, ‘Dunkirk’. We will reassemble it and do a few other things to it.

If I’m ever down that way, I will look you up,


Well, need to get back to cars I guess and want to thank Tony and Keith’s allowing for this somewhat ‘off topic’ heads up that is in the nature of usually being interesting to most guys anyway...especially us older ones! Lol



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50s Chevys


 
eplantage 
Frequent Contributor
Posts: 2095

Loc: Southern MN
Reg: 03-15-04
04-19-18 09:55 AM - Post#2731553    
    In response to 50sChevys

I for one find this very interesting. Show us what's in the container once it's emptied and in progress. Thank you for your part in preserving history, both cars and aircraft. Much of what is done with aircraft can be used in the automotive arena.

Age: 63 at the moment
1950 Chevrolet Sedan Delivery
1953 BelAir Convertible Project
2002 Heritage Springer FLSTSI
1930 Model A Standard Coupe


 
postalcop 
"3rd Year" Silver Supporting Member
Posts: 128
postalcop
Loc: MO
Reg: 06-01-12
04-21-18 05:40 PM - Post#2731788    
    In response to Bel Air kiwi

So here is the space I have to work with. there is a little over 2 1/2 inches between radiator and water pump. I think that mount for a mechanical fan can be cut off which would give me another half inch.



I can't really move the motor back without modifying the firewall. I did find out the motor needs to drop down about 2 inches.





53 Chevy 210
350 engine / 350 trans
3.42 chevy s-10 rear axle


 

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