A couple of photos from my "another cheap electric fan build"

[Old Yeller 1970]

For reasons I'll explain shortly, I decided to replace my stock fan set up and, while searching the forum, found the "another cheap electric fan build". After looking at the options I ordered a fan from moparparts.com for about $70 shipped and a thermostat kit someone had recommended from Jegs (Jegs even gave me a free cap ). My conversion was a little different because I already had a 2" universal aluminum radiator installed with the aluminum shroud and stock fan. With my jigsaw I was able to cut the shroud to fit and got it all installed.

The reason for the switch was due to a pulsing vibration I'd been trying to chase down for several months. I finally determined it was the fan/fan clutch that was causing it. My guess is since these were designed to turn at 4500 RPMs max, spinning them past 6000 RPMs was well past their limits and something has warped. Since electric fans free up HP I decided I had nothing to loose and HP to gain. And so far so good. I rocketed along my county road at 100+MPH and it did just fine on our 90 degree afternoon today.

[bigguy69]

Looks good. Need more pictures!

[Old Yeller 1970]

I should be able to pull it back out today or tomorrow and get a better shot of it.

[Old Yeller 1970]

Originally Posted by bigguy69

Looks good. Need more pictures!

Here's a couple of shots with the fan pulled out.

[darkolive71]

Looks very nice! I have been very happy with my mopar fan since I installed it 3 months ago.

[stich626]

thanks, never thought of moparparts.com

dealer wanted 350.oo as they'll not sell me the recall replacement without a vin#

[Old Yeller 1970]

Originally Posted by stich626

thanks, never thought of moparparts.com

dealer wanted 350.oo as they'll not sell me the recall replacement without a vin#

Signing up for an account couldn't be simpler. You'll need the year model and part # (about half way down the build thread) for moparparts to look it up.

[stich626]

all ready saved the part # and the insane 350.00 part # for a jukyard crawl. but 51. new..
ship it

[68 IRON]

All I need now is one shroud and two fans for both of my trucks. It is amazining when you think about it, how much stress is put on the water pump with a not very well balanced fan spinning at high speed. This will save parts, HP and labor. Makes everthing under the hood look a lot cleaner also.

[highliner]

That's the same fan I put in. It fits perfectly inside the stock shroud and was cheap and easy.

[Old Yeller 1970]

Originally Posted by 68 IRON

All I need now is one shroud and two fans for both of my trucks. It is amazining when you think about it, how much stress is put on the water pump with a not very well balanced fan spinning at high speed. This will save parts, HP and labor. Makes everthing under the hood look a lot cleaner also.

Lets talk about the saving HP part. This afternoon I took my uncle for a first time ride and gave the requisite show-off burnout. When I sensed it was about time to shift I glanced at the tac and was turning 6900 RPMs. I've never been able to spin the motor that high. Typically I could turn 6200-6300 RPMs and maybe 6500 once, if ever, but nowhere near 6900. I knew the big, heavy steel fan was a parasite but never imagined it was that much.

Also, if you need a stock shroud, I still have mine. It's in good shape with only the normal scratches etc from regular use. PM me if you're interested and we'll work out a deal.

[stich626]

I need a new shroud before I do anything

[kevmic28]

I picked up the fan today and ordered the wiring relay kit from Jegs but I dont have a place on the pax head to install the sensor. How do I go about installing it somewhere else? Drilling and tapping the head is not an option for me.

[kevmic28]

Originally Posted by kevmic28

I picked up the fan today and ordered the wiring relay kit from Jegs but I dont have a place on the pax head to install the sensor. How do I go about installing it somewhere else? Drilling and tapping the head is not an option for me.

Disregard, I just realized I was looking at the wrong side of the head. How do I get that plug out of the head?

[Old Yeller 1970]

Originally Posted by 68GMCCustom

if you're turning that many r's....have you upgraded your balancer yet?

Oh yes. My engine builder says I'm good to 7500 RPMs from one end of the engine to the other.

Originally Posted by kevmic28

Disregard, I just realized I was looking at the wrong side of the head. How do I get that plug out of the head?

Does it use an Allen wrench or is it a square head plug?

[68GMCCustom]

if you're turning that many r's....have you upgraded your balancer yet?

[kevmic28]

Im not sure yet. I will try to get a better look at it today, someone has filled it with putty or something I have to scrape out first.

[kevmic28]

Its a square head and what I thought was some sort of putty was a broken off square head in there that had been painted over. Got it out. My electric kit will be delivered tomorrow so I will be installing it all tomorrow night.

[Keller]

how difficult was it to wire up? where did you tap power from?

[Old Yeller 1970]

Originally Posted by Keller

how difficult was it to wire up? where did you tap power from?

The wiring isn't difficult. The Jegs kit has everything color coded with an easy to read schematic. The kit supplies a relay so main power for the fan comes from the battery.

On my truck I have a fusible link wire running from the battery to a terminal mounted on my right fender and that's were I hooked up main power to the fan. (I also run my headlights through the same terminal via relays too.) If you have a battery terminal with the two nuts and bolts that tighten down on the starter cable, you could hook it up there.

There is another wire that goes to a switched ignition source which I hooked up in my fuse block under the dash. That way the fan cuts off when the truck is off. However, it could be hooked to the battery too, so the temperature sensor will cut it off once the temp drops low enough.

[DBear]

I am a little confused....is the fan set up 70.00 or 350.00? Did I miss something? How much was the thermostat? And...is there a reason why u guys are using this mopar part? Thanks in advance for any help!
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[Old Yeller 1970]

If you buy it through moparparts.com the fan is $70 shipped. If you go to a dealer they may want $350 if you don't have a Jeep VIN. Check out the link in the first post. It explains why the mopar fan.

Here's the Jegs link for the wiring kit. http://www.jegs.com/p/JEGS-Performan...58607/10002/-1 I used the 555-10560 which cost $45.99.

[Classic Heartbeat]

I am curious, why would you want to place the temperature sending unit in the head and not the radiator? Your fan cools the water in the radiator, not the engine. WES

[Old Yeller 1970]

Originally Posted by Classic Heartbeat

I am curious, why would you want to place the temperature sending unit in the head and not the radiator? Your fan cools the water in the radiator, not the engine. WES

Well, Jegs said to put it in the engine (the right head in my case). I think that's logical because that's were the thermostat is and also the sending unit for the water temp gauge on the dash. Since the water heats up there sooner than the radiator, I'd want the radiator fan to turn on and start cooling the water as soon as the engine reached the thermostat's operating temperature. That way cooler water immediately starts to keep the engine cool. Maybe putting the sensor in the radiator would work but I don't see an easy way to mount it.

[kevmic28]

I picked up my fan with the supplied part number for 81 bucks. Had it in stock. They used to be cheaper but the originial write up was from 2007. Got my wiring kit from Jegs today and will be installinf it tonight.