Show me your electric fan conversion

[austinado16]

The inside diameter of the OE small block fan shroud is 22".

The inside diameter of the OE big block fan shroud is 21".

EDIT: The outside diameter of the Mark 8 shroud is 19".

Sure sounds like the Mark 8 fan's round shroud area could go inside our shrouds.

 

[crazy4offroad]

MK 8 fans

Year: '93-'98

Dimensions: 22"W x 18.5"H x 6.25"D.

Draw: 33 amps continuous, over 100 amps on startup.

Thanks John! At 6-1/4" depth though I will have to verify clearance with the waterpump first. I was also reading for clearance issues the I-6 fan shroud is a closer fit to the radiator so a couple inches could be gained that way.

I've also been looking into these dust/waterproof Derale fans, not sure if they will move enough air at a little over 2,000 CFM...
http://www.jegs.com/p/Derale/Derale...f-Puller-Style-Electric-Fans/1983765/10002/-1
But it has me wondering if I wouldnt be better off relocating me radiator/fan to the bed. I know it's a real bitch and adds a whole new slew of headaches, trying to purge all the air, just not sure how well a Ford luxury car or minivan e-fan will hold up to the punishment I will put them through.

 

[austinado16]

Here's a thread over on fullsizechevy.com where a guy installed the Mark 8 fan inside his OE fan shroud. He trimmed the M8 shroud to be a smaller, flat square, and then bolted it to the inside of the back wall of his shroud.

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http://www.fullsizechevy.com/forum/...g-suitable-spot-e-fan-temp-switches-5-7l.html

 

[skysurfer]

Looks like about an inch can be trimmed from the shroud for fitment issues. These are going into cars with a lot less room under the hood than our trucks. In tight applications the fan is flipped 180 degrees ( for wiring access) and offset to the driver's side a bit so the fan motor and stock pulley don't line up.

Can't comment on putting it in the bed, that's way out of my league. If you plan to use it in situations like your avatar I would look around to see what the other mud trucks are doing. My gut feeling is an e-fan won't survive a front mount location in deep mud, the fan blades don't look strong enough to spin through muck. But then again, if it were manually controlled with a switch it could simply be turned off during a run.

 

[bucket]

Thanks John! At 6-1/4" depth though I will have to verify clearance with the waterpump first. I was also reading for clearance issues the I-6 fan shroud is a closer fit to the radiator so a couple inches could be gained that way.

I've also been looking into these dust/waterproof Derale fans, not sure if they will move enough air at a little over 2,000 CFM...
http://www.jegs.com/p/Derale/Derale...f-Puller-Style-Electric-Fans/1983765/10002/-1
But it has me wondering if I wouldnt be better off relocating me radiator/fan to the bed. I know it's a real bitch and adds a whole new slew of headaches, trying to purge all the air, just not sure how well a Ford luxury car or minivan e-fan will hold up to the punishment I will put them through.

From what I've seen, the factory parts can take some abuse. I have pictures saved that the PO of my blazer took when he got the truck stuck in a big hole. The water and mud were up to the hood on one side and it never hurt the fans. I think all you would need is a switch to disable them when needed.

 

[heavyleft]

Im rocking the Windstar fan mod. $50 from a junk yard and $15 for a couple of relays and a rocker switch.

Dont mind the wiring, this was taken right after installation. All wiring has been perdied up.

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[austinado16]

What radiator do you have the windstar fans on? The longer version of the big block radiator?

Just heard back from an ebay seller with the Mark 8 fans. They are 19" to the outside of the round opening.

Now I just need to hear from people who've done the e-fan mod and who tow with it, in the mountains, at low speeds, in near triple digit heat.

IMO, it's one thing to install an e-fan, and run around town, or sit in traffic, or even go crawling. It's a whole different ball game on the road, under load, at low speeds so air flow is down, maybe even stuck behind a big rig, or motor home, etc. and pulling some 5-10+mi grade at 25-35mph. What I know is that the stock clutched fan can handle this all day long.......because I've done it often. What I don't know is; can the e-fan? It'd be a real trip ruiner have to pull over because the fan won't keep up, and have to milk a hill climb in little half mile increments. Plus, many times there's no shoulder, so you're commited. You either climb to the top, or at least to the next available turn out, or you grenade it.

 

[crazy4offroad]

I think I have my mind made up on this. Even though the MK 8 fan can really blow your temps down, I think I will feel better with a dual fan setup. Reason being, if one fails at least you will have some cooling happening from the other one. (REDUNDANCY!) Which reminded me I have a Toyota Camry radiator downstairs with both factory fans on it...

I hooked them up to my battery charger on 20 amp and they seem like they move air really well. Overall they measure about 13" tall by 26" wide (they have metal shrouds made on them). My first thought was they are too short but then I was like heyyyy, I could mount them on the high side of the radiator and maybe they would stay out of the mud and water a little better. If I split the difference and mount them in the middle that's only about 2.5" top and bottom, that's not too awful bad. But since the hot water from the engine comes in the upper hose mounting them high might be the better alternative. At 26" wide there will only be 1" or so on both sides so that's good. I have enough sheet metal to make a mount for them. Thoughts/criticism?

 

[austinado16]

All you can do is try them and see what happens.

 

[bucket]

I think I have my mind made up on this. Even though the MK 8 fan can really blow your temps down, I think I will feel better with a dual fan setup. Reason being, if one fails at least you will have some cooling happening from the other one. (REDUNDANCY!) Which reminded me I have a Toyota Camry radiator downstairs with both factory fans on it...

I hooked them up to my battery charger on 20 amp and they seem like they move air really well. Overall they measure about 13" tall by 26" wide (they have metal shrouds made on them). My first thought was they are too short but then I was like heyyyy, I could mount them on the high side of the radiator and maybe they would stay out of the mud and water a little better. If I split the difference and mount them in the middle that's only about 2.5" top and bottom, that's not too awful bad. But since the hot water from the engine comes in the upper hose mounting them high might be the better alternative. At 26" wide there will only be 1" or so on both sides so that's good. I have enough sheet metal to make a mount for them. Thoughts/criticism?

I wouldn't bother with those things, for a couple reasons. First, they don't have much of a shroud and you would need to fab something up. Second, we've had an awful lot of those old Camrys come in the shop with blown head gaskets and I think it's due to a poor cooling system (fans included).

 

[crazy4offroad]

OK I'll have to keep my eyes open for the Windstar setup, definitely got my mind set on dual fans. I just knew they were free, and when I hooked em up they seemed like they could move some air. Wife had a 90 Camry v-6 a long time ago and it was pretty nice till the oil pump went out. Bought another for a few hundred bucks for the motor and scavenged a bunch of parts not knowing what I might use em for.

 

[bucket]

You can get a Windstar fan assembly through anywhere that sells aftermarket crash parts. I don't remember the price being very high.

 

[crazy4offroad]

Rather than buy aftermarket (potentially Chinese junk) I'm going with the junk yard on this. Just called one of the closest ones, told em what I want and what I'm doing with it and they said they had several Windstar fan assemblies, just come out and measure what I needed and they'd price it then which makes me nervous. If it's more than $50 they can forget it, I aint skeered to walk away and look elsewhere. Going to sell that topper today and use the money to get em, probably have em installed by the weekend hopefully if the price is right.

 

[bucket]

Mine are the aftermarket stuff, but I agree with you, the factory parts are a good choice.

 

[GOBR]

I've got a dual fan setup off a 2005 Pontiac grand Prix that will be going on mine after the motor swap. The shroud is too wide by 3-4 inches but Ill cut that off. Im gonna mount them in the middle and make a peice of sheet metal to angle from outside of radiator to the fan assembly to complete the 2-3 inches of uncovered radiator on top and bottom. The grand Prix radiators are actually bigger than the one I have in my truck. I can measure them tomorrow and tell you the dimensions. Ill probably wire it to where the low speed fan stays on continous and the other kicks on at a certain temp. One is a/c fan other is cooling fan.

** Just measured. The shroud is 30 x 15 1/2. My radiator is 28 wide. Not sure on height. Hey they were free!