• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
351C 4V - 72 Mach 1 Engine fan
#1
hi, just wanted confirmation from anyone with a 72 Mach 1 that the below is aftermarket and not an original Ford part. I don't see a Ford or Fomoco logo anywhere.

That said, were originals 6 finned like below, or 5 ? I've seen some and can't tell.

If it is not an original, I may be interested in replacing it with an original as part of the engine rebuild so if anyone has one going let me know. thanks.

Ps - i put some rust removing gel on the center casting in case you noticed....

[Image: u-WJzub-Kl-RCmi4-NCbp-M8-QIg.jpg]

[Image: b0-WH2-USu-TOSEE40z-Cjzd-Og.jpg]
  Reply
#2
No that's not an original fan blade looks like a flex a lite or derale.
  Reply
#3
Sorry, but that's a piece of sh*t, don't use it!!
My 72 Q code had a solid 4 blade fan on it, but to be honest, it did not have the original block in it so I can't be totally sure the 4 blade was "correct"
The '73 had a Fram made 5 blade flex fan, but I still would never use one, I've seen the damage they can do first hand when they blow up.
Buy an original solid 4 blade or a good clutch fan. Also, don't buy those aftermarket aluminum P'sOS.

I learn something new every day!
  Reply
#4
Agree that is an aftermarket fan.
However original Ford mustang flex fans commonly exploded. I had one disintegrate and luckily only took out the shroud and a small dent in the hood.
This is one time where a reproduction fan or good aftermarket would be better choice.
I think Ford had a recall back in the 70’s and there may be an updated part number if originality is important.

Good luck

[Image: mustangnight010.jpg]
1972 Mustang Convertible 351C 4V
1966 Ford Galaxie 7 litre-4speed

Jorge
  Reply
#5
Aftermarket junk - toss into the nearest bin.

Factory would be an 18 1/2" diameter 5 blade flex fan for the '72 351CJ. If your car is automatic with standard cooling, you'd use the D0AE-A or D1AE-CA, Otherwise, its the D2SE-AA fan.

http://www.mustangtek.com/fan/D0AE-A.html

http://www.mustangtek.com/fan/D2SE-8600-AA.html

Either way, I would never use factory Ford flex fan. Beside the disintegration issue, they are noisy as all hell. Switch the fan to a thermostatic clutch fan unit and enjoy not having to listen that fan thrashing away under the hood, free up some HP and get extra fuel mileage to boot.

The clutch you need is the Hayden 2710. The fan blade is Derale 18" 17118, online for about $40.


  Reply
#6
(02-19-2019, 05:11 PM)baz70 Wrote: hi, just wanted confirmation from anyone with a 72 Mach 1 that the below is aftermarket and not an original Ford part. I don't see a Ford or Fomoco logo anywhere.

That said, were originals 6 finned like below, or 5 ? I've seen some and can't tell.

If it is not an original, I may be interested in replacing it with an original as part of the engine rebuild so if anyone has one going let me know. thanks.

Ps - i put some rust removing gel on the center casting in case you noticed....

[Image: u-WJzub-Kl-RCmi4-NCbp-M8-QIg.jpg]

[Image: b0-WH2-USu-TOSEE40z-Cjzd-Og.jpg]
I have an original 5 blade fan from a 72 CJ motor.50 bucks plus shipping.
  Reply
#7
So this is good information for me as well. I have the original fan from my '72 351 CJ w/AC and from what I'm reading here I should not use that ever again?? I did have to get a new fan shroud due to a big hole at the top. Would that have been from a previous flex fan failure or would the damage have been much more substantial than that?

Stang Life!

[Image: Stangs.jpg]






  Reply
#8
(02-20-2019, 10:07 AM)ITMike5.0 Wrote: So this is good information for me as well.  I have the original fan from my '72 351 CJ w/AC and from what I'm reading here I should not use that ever again??  I did have to get a new fan shroud due to a big hole at the top.  Would that have been from a previous flex fan failure or would the damage have been much more substantial than that?

 Way more substantial. If one of those blows up and your head is/was in the way, its gone!! I have seen where these blades have exploded in the test rig an buried pieces well into 4 inches of oak. Fram (and other companies) made thousands of these type flex fans back in the 70's. Most will never be an issue, but after many miles of use, some failed due to stress or incorrect handling. The chances of one blowing up on your car are slim. but would you really want to take that gamble? Not me!!
Geoff.

I learn something new every day!
  Reply
#9
I took the original one off and replaced it with a clutch fan. Mine was missing a blade! I really don’t know how it happened but one blade was broken off where it is riveted. The flex part was completely gone but I had absolutely no damage from it. It must have been put back on by the previous owner and I never noticed it? I can’t believe I never saw that it was missing but there’s no way it broke off and didn’t cause any damage.
So anyway I would really think twice about putting one of those back on.

run_horse Run Horse Run!
John 72 Q Code
  Reply
#10
As has been stated there was a recall on the fans. I got the letter but never took mine in. It did kill some people even a Ford tech. I would expect it to happen to high mileage or high reeving engines.
You should be able to inspect the fan and see any cracks starting to form. It is not just a boom and it breaks it starts slowly. I am not going to change mine.
I use to design cutter heads for machining viscous drive clutch fans. Pretty simple design has a bunch of grooves with a silicone based oil sealed in it that varies the amount of rotational force with heat.
To machine one of them took I think 3 seconds. Every feature on the casting was cut at one time not a single point tool. The equipment that Borg Warner used here was originally designed to machine projectiles for large military cannons. When CNC came out they switched to the latest and greatest CNC and soon found the the old was way faster and better so went back to them, lol.
Just keep check on the fan you can magnaflux to be sure. It is a harmonic thing that causes the issue. That is one reason the fan blades are not equally space on them. That helps kill the harmonics. Sort of like breaking a glass with a constant sound wave does the same to steel at the right harmonic rate.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
  Reply
Share Thread:  


Possibly Related Threads…
Thread Author Replies Views Last Post
  351c fan don blanchard 9 255 08-20-2019, 09:52 AM
Last Post: don blanchard
  351C 4V "quirks" Mystic Fish 11 1,502 08-18-2019, 06:22 PM
Last Post: Spike Morelli
  Correct 351C Power Steering Hoses? street rod mach 1 12 862 08-18-2019, 03:25 PM
Last Post: Don C
  351 engine tear down Manu Mach1 84 12,982 08-18-2019, 02:41 PM
Last Post: Spike Morelli
  Need a Canadian engine rebuilder AcesArneson 2 126 08-18-2019, 12:01 PM
Last Post: AcesArneson
  99 mountaineer 5.0 into 72 mach 1 72mach12019 31 950 08-12-2019, 10:34 AM
Last Post: Hemikiller
  351C 4V Exhaust system kcmash 14 2,882 08-09-2019, 04:57 PM
Last Post: goodnigh
  Engine running lean mustangandy 9 386 07-17-2019, 08:07 AM
Last Post: mustangandy



Users browsing this thread: 1 Guest(s)