Mazda BT 50 & Pickup Trucks While Mazda may not be known for their trucks, they have always produced quality reliable trucks for both hauling cargo, or simply crusing. BT 50

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Old 02-27-2023 | 04:35 PM
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Default Electric fan

Anyone ever ditch the engine mechanical fan and go with electric? Assuming you did it correctly with a high quality fan and controller and also a beefed up alternator.

How much hp can you free up for the stock 2.2 engine? Enough to notice?
 
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Old 02-27-2023 | 04:45 PM
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Most average humans can not feel 10hp increases on most all 4 wheel (not 4x4) gas engine vehicles. The (est. based on dyno testing many early carbureted 4 cylinder engines ) .50 -.75 hp loss due from patristic drag you likely would never notice or feel. Maybe a slight improvement in acceleration, maybe? I think some us know why the trade off balance from a direct or clutch cooling fan converting to an electrical fan.
But the improved cooling and a better controlled cooling system than OEM is always a plus.
You don't necessary need to go with top name brand electric fans or controllers for a project like this either.
 

Last edited by Callisto; 02-27-2023 at 04:48 PM.
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Old 02-27-2023 | 04:59 PM
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Personally, I don't think you'd notice any increase in hp, any change would be wishful thinking/justification.

I'm in Arizona desert and stock fan, stock fan clutch, 2-row aluminum radiator, and 195F thermostat keeps my B2200 engine running cool. Yes, AC on 90% of the time, and Cab Plus.
 
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Old 02-27-2023 | 05:14 PM
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Thanks for the input.

Speaking of radiators, ours has seen better days and a new on is on the way. Actually two are on the way. The first one I found was Duralast A685. It’s aluminum core with plastic tanks or at least that’s what it appears in the picture.

After that I saw an all aluminum one and had to order it too. Although the supplier of the all aluminum one contacted me and claiming what I ordered is out of stock and that they were sending me a different brand. They said it too was all aluminum and had same warranty and they were not changing the price. I’m curious are what I will get.

We will be comparing the two and making a decision on which to keep and put in the truck. I hope the all aluminum one is good enough quality that it’s the choice.

I guess we have to wait and see.
 
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Old 02-27-2023 | 05:18 PM
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Here’s the aluminum one that was out of stock. They are substituting a different brand. I sent an email asking what brand but have not gotten an answer yet.

https://radiatornow.com/products/199...xoCddQQAvD_BwE
 
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Old 02-27-2023 | 05:24 PM
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Thats a good looking radiator!
 
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Old 02-27-2023 | 08:42 PM
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Here’s another cooling system related question.

What is the sensor in the bottom radiator tank for? I also see the one in the thermostat housing which I think is for the temp gauge. But I don’t know what the one in the radiator is for.
 
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Old 02-28-2023 | 12:09 PM
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I have a 2-row all-aluminum radiator in my own 1988 B2200, installed in 2011. Since mine is 5-speed, I didn't need to hook up anything to those two lower ports which are there for automatic transmission trucks. I did need to drill four mounting holes in the radiator FRAME for my 5-speed radiator shroud to attach (blue arrows); the radiator itself bolted right into the frame.




Originally Posted by 90-B2200
What is the sensor in the bottom radiator tank for? I also see the one in the thermostat housing which I think is for the temp gauge. But I don’t know what the one in the radiator is for.
That's for a temperature sender for the factory PTC heater between intake manifold and carburetor; one doesn't need that with a Weber carburetor.
 
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Old 02-28-2023 | 03:20 PM
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I should add that there are likely few/one real manufacturer of all-aluminum radiators for the few B2000 and B2200 trucks still on the road, just wouldn't make economic sense. So most likely from one or few factories and simply rebranded. And I would expect same for most of "our" parts.
 
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Old 02-28-2023 | 03:27 PM
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Yes, OSC865 is the radiator they claim to be sending me. If you search the web you see the same thing offered from various vendors.

https://www.google.com/search?q=osc8...nt=safari#ip=1
 


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