Pre-1997 Models

92 2wd 4.9L

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Old 07-28-2011, 05:20 PM
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92 2wd 4.9L

well getting a truck for my g/f 800 bucks it has a small hole in the rad. 209 on the dash 110K on the motor needs a starter also clean other wise.

the only thing i know about these 4.9's is they are going to be around long after the world ends. past that i dont know much ha.

it needs a fan clutch too but im thinking of getting her an E-fan and after looking at the truck yesterday i relized theres not much room in there for an e-fan what do yall with the 4.9L use for a fan set up?

ill post some pictures on sat when we get the truck.

 
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Old 07-28-2011, 06:32 PM
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Just replace the fan clutch. It's cheaper, better, & easier. These pics might interest you:

.
 
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Old 07-28-2011, 10:27 PM
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E fans only advantage is deep water crossing. Mech fan will pull more air more reliably.

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Old 07-29-2011, 01:21 PM
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huh i didnt know that always thought E-fans gave more power and used less power and where more effective at idle.

ill look into a mech fan then. but i figured while the rad was out i could just slap an E-fan on it and call it a day
 
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Old 07-29-2011, 04:53 PM
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Converting energy from one form to another invariably wastes some of it (which is why a perpetual motion machine is impossible, and why superconductors are so valuable); most coversions are on the order of 50% lost, or more, usually as heat or noise. Either type of fan takes energy from the drivebelt, but the e-fan converts it from mechanical to electrical in the alternator (losing a LOT of heat), then pulls that electricity through wires & connectors with resistance (more heat), then converts it BACK to mechanical in the fan motor. A mech fan simply drives the fan directly off the belt - virtually no loss (by comparison). And that only happens when the clutch is engaged.

An e-fan requires complicated integration with the rest of the vehicle before it even approaches that efficiency, and these old trucks aren't built for it. You'd have to install a newer PCM that was designed for an e-fan.
 
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Old 07-29-2011, 05:16 PM
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i slaped an E-fan on my 97 and i rarely turn it on only if im sitting in traffic for a long time my clutch fan was always roaring and loud. not to mention i picked up 2 more MPG's going to an E-fan

you dont need a PCM to run an E-fan mine is done with a simple 12volt switch.

E-fans at my local junk yard are 30 bucks for any fan set up.
 
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Old 07-30-2011, 01:37 PM
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You can run an e-fan with a simple system, but it won't be nearly as efficient as a cheap clutch. The e-fans on MY truck are wired up with several switches & relays, but I didn't do it for MPG; I did it because my clutch went bad, and I had the e-fans/relays/switches/wiring in my junkpile, so it cost me less than buying a new clutch. And I do a lot of off-roading, so it's nice to be able to turn the fans off before fording.

 
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Old 07-30-2011, 05:01 PM
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Old 07-31-2011, 04:04 PM
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will a rad out of a bronco with a 5.0 or 5.8 fit for this thing? my friend might have one laying around.
 
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Old 07-31-2011, 04:38 PM
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The SBF radiator inlet and outlet are on the wrong sides for an I6.
People have made them work with extra long hoses that cross over to the opposite side but it's pretty much a cobbled up mess.
 
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Old 07-31-2011, 04:49 PM
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haha gotcha think will just get a new one then.
 
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Old 08-01-2011, 12:31 AM
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where do yall put the temp senor for coolant on the 4.9's?
 
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Old 08-01-2011, 01:24 AM
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RHR of the head. You can barely see it looking up behind the RHF tire between the frame & wheelwell with a flashlight.

 
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Old 08-01-2011, 01:45 PM
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thats where the stock one is is that the only place to put an aftermarket one as well?
 
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Old 08-01-2011, 06:47 PM
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It's the only EASY place that will provide an accurate reading. If you have a machine shop, you can put one somewhere else, but it probably won't work right. WHY?
 


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