A few months ago I posted here for an over heating problem with my Bronco. Some suggested to use a Lincon Mark 7 electric fan.
I'm here to say that the fan works great!
After pulling some long trails at the hammers, the temp never got over 205 and mostly stayed around 180.
It's a far cry from the old 240 and higher that it used to climb to.
:)
One other thing that helped is using straight water and some water wetter - no antifreeze.

Yeah I remember reading that...you had an electric on there before right? What size was your old one and how big is the lincoln one?

The old one was a Black Magic (15'')
The new one's 18''.
All I'm saying is that if you have to run electric fan, consider the mark 7.
It comes with it's own integral shroud that fits a 19x22 rad. perfectly.

:D

http://home.earthlink.net/~mattsara/bb/taurusfan.jpg

antifreeze helps raise the boiling point and prevents corrosion in the engine. just something to think about. but it would be nice to not have to worry about spilling antifreeze all the time.

What years do you get them in the Mark 7's? Also, are they pusher or puller or can they be modded to be both?

Chad

Well the fact that it has a shroud makes it a puller, otherwise it would be counter productive.

These are 2 speed fans. Mine came out of a 92 taurus station wagon. I think....I searched high and low for one, and finally gave up. Then one day I was walking through yard and found this one sitting on the front seat of the taurus.

The Taurus fan looks somewhat different than mine (do a search to see) but the idea is the same, BIG AND HAIRY.
These fans were set up to be variable speed.
There are two Mark 7 fans, get the latter one.

I like the Taurus fan. It's thinner

I was under the impression that they were the same. The taurus fan is a very low profile fan. I haven't hooked mine up yet. I'm waiting until I build a new core support. With my griffin radiator, the one I have rarely comes on.

These fans definately "blow" away the aftermarket competition, and have OEM reliability. The best part is they are $ cheap $.

Hey, how'd you fit that thing in your EB? I was considering doing the same but it would be a super close fit to get it in.

-Jack

Originally posted by IronBenderII
Hey, how'd you fit that thing in your EB? I was considering doing the same but it would be a super close fit to get it in.

-Jack

My Bronco is not exactly stock, so I'll just show pics.
Here are links to previous threads on this topic.
On a stock Bronco you will probably have to move the radiator forward for any radical fans.

http://www.pirate4x4.com/forum/showthread.php?s=&threadid=21025&highlight=fan

http://www.pirate4x4.com/forum/showthread.php?s=&threadid=16617&highlight=fan

I remember that Fat City post, I thought your user name was different. Never mind!

Originally posted by IronBenderII
I remember that Fat City post, I thought your user name was different. Never mind!

JR owns the truck, fat city built the truck...

Originally posted by JR
There are two Mark 7 fans, get the latter one.


actually, if you can find them, the earlier mark VII fans are better - they pull 1700 more cfm, at the expense of more noise - they're jsut hard to find... the later fans were quieter, at the expense of some airflow.

also, make SURE to run these on adequate relays - there's a few guys over at the corral that have had fires due to improper wiring - the mark VII fan will draw over 60A at startup (yes, 60A). constant draw on high speed after startup is around 32 A.

Originally posted by kincade b



also, make SURE to run these on adequate relays - there's a few guys over at the corral that have had fires due to improper wiring - the mark VII fan will draw over 60A at startup (yes, 60A). constant draw on high speed after startup is around 32 A.

Hmmm, I'm running a 30 amp relay with 10 ga. wire.
You got me worried, Kincade.
Will I need to check the condition of my fire extinguisher?

Also, in June the Bronco is going to be submersed in water and mud. I will be turning the fan off during this time, but want to know if the fan will be good to go when it's turned back on.
Is it reliable?

Originally posted by JR


Hmmm, I'm running a 30 amp relay with 10 ga. wire.
You got me worried, Kincade.
Will I need to check the condition of my fire extinguisher?

Also, in June the Bronco is going to be submersed in water and mud. I will be turning the fan off during this time, but want to know if the fan will be good to go when it's turned back on.
Is it reliable?

not trying to scare you - but a couple of the mustang guys had 30A relays that burst into flames - one had the "variflow" controller, that was supposedly built for this fan, w/ something like a 40 A relay, and also had a small fire.

best writeup i've found is here:

http://www.geocities.com/smithmonte/Auto/MarkVIII_Fan.htm

he's an electrical engineer - his advice is qualified.

as far as durability, i personally wouldn't be comfortable submersing ANY electrical motor - but if i did, i'd make dang sure that it was completely dried out before i started it back up

Thanks for the info. and web site, kinkade b.
You saved me a melt down!
I didn't think the fans use that much power, I'll be calling them up.

The fans are quiet though.
The fan shroud was shaved about 3/4'' for clearance and there was a little less pull around the edges because of the fan being so close to the radiator

A very informative and usefull write-up. Definitely shows the homework here.

Originally posted by JR
Thanks for the info. and web site, kinkade b.
You saved me a melt down!
I didn't think the fans use that much power, I'll be calling them up.

The fans are quiet though.
The fan shroud was shaved about 3/4'' for clearance and there was a little less pull around the edges because of the fan being so close to the radiator

no problem - i didn't realize that they drew so much at startup - at that instant when the power hits... but the fan is still stopped... it acts like a dead short... until the fan starts spinning.

great fans though - IMHO, they're the best out there, if you can fit them in. the later (same as you have) pull around 4200 CFM, and the earlier, (louder, harder to find, and more expensive) pull around 6000 CFM.

Originally posted by kincade b


no problem - i didn't realize that they drew so much at startup - at that instant when the power hits... but the fan is still stopped... it acts like a dead short... until the fan starts spinning.

great fans though - IMHO, they're the best out there, if you can fit them in. the later (same as you have) pull around 4200 CFM, and the earlier, (louder, harder to find, and more expensive) pull around 6000 CFM.

do you have any stats on my taurus fan pictured above?

Originally posted by Nobody


do you have any stats on my taurus fan pictured above?

unfortunately, no - i know both the taurus and SN95 fans are supposed to work well, but i don't have any specs on either...

sn95?

Originally posted by Nobody
sn95?

'94 and later mustangs are internally called the SN95 platform

Originally posted by Nobody
sn95?

sorry - 94-95 mustangs.

ahh, so there's yet another good fan out there. Is it 2 speed as well?

Originally posted by Nobody
ahh, so there's yet another good fan out there. Is it 2 speed as well?

i believe so, but i'm not positive. supposed to be a good fan though, usually cheaper than the markvii, and easier to find.

Looking at the fan that I have, it is easy to see that Ford put a lot of effort into making it quiet and efficient.
From the webbing that suspends the motor to the blade its self, it's all well thought out.
Do you know if it is still possible to buy the older style, mark 7 fan new? (6000 cfm :eek: )

Originally posted by JR
Looking at the fan that I have, it is easy to see that Ford put a lot of effort into making it quiet and efficient.
From the webbing that suspends the motor to the blade its self, it's all well thought out.
Do you know if it is still possible to buy the older style, mark 7 fan new? (6000 cfm :eek: )

i'm not sure - every time i've checked the dealer, they've been out of stock w/ no ETA of having it in stock - it's also VERY expensive around here - ~$500ish.

OK Here they are

93-96 MARK VIII F3LY 8C607 A LISTS FOR $284.80
97 MARK VIII F7LZ 8C607 AB LISTS FOR $221.33
98 MARK VIII F8LZ 8C607 AA LISTS FOR $233.76

I got the early one for $160 at action auto wreakers on hillcap ave in san jose.

sn95 F5ZZ 8C607 A LISTS FOR $249.07

The Taurus fan looks to be out of a 92-95 and actually they show 6 different fans for these cars dep. on engine and year. all of witch are priced MORE than the mark VIII(shocked me too).
:D

oh yah those are what the dealer would charge you so you might be able to get them cheaper new. but why just get a used one. save mass $$$$$.

Thanks for the info., 67FLAT4 :)
I'm waiting for a Bosch 75a relay so that I don't have to use my fire extinguisher.
These fans kick ass!

What do you guys think about using a starter solenoid for a fan relay?