[LouisianaGuy]

Well I got me a fn from a Lincoln Mark XIII today, cost me 35 bucks and I got a few Ford relays, and a hand full of maxi fuses
I measured the shroud when I got home and it was the perfect hight, but the length is short on both sides by about 3 inches per side.
I suppose Im going to have to make some extra fan shroud to go on it to take up the extra 3 inches on each side of the radiator, anyone got a pic of some stuff they have done with the mark 8 fan?? Sporter?? didnt you use a mark 8 unit.
Also the Newer Thunderbirds fans are identical the the Mark 8 fan, I think like 95-98 Tbirds just gota be sure its got the V8 in it, they had one of those at the yard also, If some one would like it i can pick up up for you and send it you pay purchase price and shipping, The guy said he would let it go for the same price as what I paid for the Lincoln fan.
I got some pics I will post later on tonight.
Mike

[geekwagon]

I wonder if someone could post how to wire a dual fan setup on 2 separate switches.... from soup to nuts. I dont wanna mess up anything. I dont get what kind of relays/harness should come with the fan and then what to wire where (to battery, to accessory position??). Sounds kind of dumb but this is something I would prefer detailed instructions on.

Appreciate the help.

Thanks kevin

[LouisianaGuy]

Geek I was wondering the same thing, Im going to be wiring through a temp switch with my fan, just gota get the temp switch, I dont wana have to flip a toggle switch to make it work.
You need to get a relay from a ford car of some type, go to the junk yard and look in the relay panel and get a few of the relays or go to auto zone and get a few standard bosche relays, I know that much just dont know how to wire them
.
Mike

[firechickenman]

geekwagon - I believe you have mail

I'll go ahead and post it here too so everyone else can see. If you want to run on a temp. switch instead of a toggle, just run from terminal "F" on the relay to the temp. switch, then the other side of the temp. switch to ground.


The fans I used are from a '95 NewYorker and they fit my stock 3-row radiator very well. They came with a 2-speed module/relay attached, and my first thought was to just wire it to use the module. No such luck, the module was bad and would not let the left fan work. So, I went to plan 2. I robbed some relays off a late 80's or early 90's Buick Century. They have a "bank" of relays behind the passenger's headlight fo the fuel pump, cooling fan, etc. Get the wiring connectors with at least 6" of wire and the mounting bracket also - they come in handy!! The relays can be mounted where the original module was.

I can draw up a diagram if you need me to, but my artistic skills suck, so I'll try to describe the wiring. From the battery positive (B+) post, I ran a heavy gauge wire (10 or 12 ga) through a heavy duty 30 amp fuse holder, then split it to run to the "A" terminals on both relays. Then from the "E" terminals on the relays to the positive lead on the fans (if I remember right, it is blue on the driver's side, and tan on the passenger's side). Then simply run a heavy gauge wire from the ground leads on the fans (I spliced mine into one common wire near the fans, both black if I remember right) to the negative battery post. The fan "power" circuit is now complete, and the fans will run on full battery voltage anytime the relays are switched on.

Now for the fan "control" circuit. This circuit will only carry about 1/2 amp of current, so small wires (18-20 ga.) are fine. From the fuse box "accessory" terminal, I ran a wire to the relays and split it to run to the "D" terminals on each relay. Then from the "F" terminals, I ran 2 seperate wires back inside the car to 2 seperate toggle switches. If you use simple one position switches, the wires from the relays go to one terminal, and the other terminal is connected to ground. Now if you have the key "on", and the switches "on", the control circuit will switch the relays on, which will power the fans.

I don't think the fans are going to cool quite as good as it did with the factory shroud and a flex-fan. That's not a major concern of mine since my main goal here was to free up some HP for the track. The best part is the fact that the only things I had to buy were the toggle switches, some wire, and connectors. I have maybe $20 in the whole thing (I'm not going to mention how many hours, LOL).

[LouisianaGuy]

So chicken ya think I should run 2 relays on my single fan?
Im not going to run a toggle switch, just run through the coolant sensor.
Mike

[firechickenman]

The only reason I ran 2 relays was to be able to control the fans seperately. Also if you use a different relay than I did, the terminal IDs will be different. I used the oval shaped GMs. You can see one in the first pic......below the fan motor.......about 7:00

[LouisianaGuy]

Is this thing covering enough of hte radiator or do I need to make some kinda larger shjroud for it.
Mike

[LouisianaGuy]

another

[LouisianaGuy]

Fan covers fine from top to bottom, but lacking 3 inches on each end :/
Make a custom shroud or not?
Mike

[Blue '66]

So this fan looks like if would fit '64-'67 nicely.What is the lenth and width?

[LouisianaGuy]

Its about 22" wide by 19" tall.
I cut the mounting tangs off of it because they were in the way. working on the shroud now, going to get some stuff to make it
mIKE

[Ollie]

LouisianaGuy,
Instead of modifying the shroud move it over to the left where the return hose inters the radiator, and try it. Then if it runs hot modify the shroud. From the looks of the radiator you might think about investing in a new one. How did you bolt the shroud to the support?

[LouisianaGuy]

Ollie, yeah the radiator needs to be replaced LOL, but its still holding water and cooling good. LOL.
Its not mounted to anything ,I just knotched the shroud a little at the top and bottom so it fit better and stuck it in there for the pic.
I bought some flat aluminum stock at Home depot yestarday and Im going ot bend it into some kinda support/hold down, then adding some 18 guage metal to the shroud to make it larger, It should look ok and function well.
I don have a question tho.
The fan harness has 2 black wires and one blue wire...Are both of the black's grounds and the blue hot?
I hooked both blacks to neg and blue to pos and it worked and pulled real hard, just wondering if this thing is some how a 2 speed fan like on the wifes caddy.
Mike

[Bigred455]

I was running a SN95 body style mustang fan on my T/A. It never tried to over heat with a cheap waterpump and 180 t-stat. This fan didn't fit to great but it works well.

Also, the fan pulls some major amperage. Supposed to be a 25A draw, but it would melt 30A relays. I ended up running a single 30A fuse, then split the hot wire through two 30A relays then brought it back together into one 8ga wire and that was highly successful.

[firechickenman]

Mike -

What year Mark VIII is the fan from? I can look at a wiring diagram tomorrow and try to find out what the 3 wires should go to.

[LouisianaGuy]

Chicken, It looked to be a 98-99 model, but im not sure, I cna call to be sure tomorrow.
Thanks,
Mike

[Blue '66]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by LouisianaGuy:
Its about 22" wide by 19" tall.
I cut the mounting tangs off of it because they were in the way. working on the shroud now, going to get some stuff to make it
mIKE </div></BLOCKQUOTE>

I may want one of the fans.My rad is 25in wide and about 20in high including the tanks.How are these mounted?

[Sporter]

I bought some junk yard fans and had two of them go out on me. I finally bought a Mark VIII from Rockauto.com for $145 and it pulls serious air. Also pulls serious amps when it first turns on so I installed a $6 Ford starter solenoid for the relay (vs $30 for a 60 amp relay). Fuse is one of the big 60 amp models. Fan fits the generic Griffin aluminum radiator almost perfectly. I run an adjustable thermostat on it and it will keep the engine within 15 degrees of where I want it.

[Blue '66]

Sporter,so you used "L"brackets with a bolt and washers on the top and inside to mount the electric fan?Just courious on how to mount this.I'm really thinking about an electric fan just not sure how to mount and wire it up.

[Sporter]

I made 2 brackets to snug the top of the shroud to the radiator, 2 brackets to hold the bottom of the shroud to the radiator support and 2 brackets to hold the radiator to the radiator support. None of them are fancy but they get the job done. I used fender washers inside and outside the shroud.

BTW, my son installed a Griffin radiator and dual fans in his 79 f-body by using wire ties (tie straps) to hold the fans to the radiator and using the radiator hoses to hold the radiator. He drove it like that for about 2k miles and 2 or 3 trips to the track before I finally noticed. I had him make some real brackets but I was surprised the hoses and tie straps held everything together for so long.