Title: Fan Clutch Selection
Post by: GrannysBird on July 29, 2014, 04:05:53 PM
Post by: GrannysBird on July 29, 2014, 04:05:53 PM
After staring at my engine bay for a long time and in the spirit of ever simplifying my automobile I'm taking the plunge back to a mechanical fan setup. Now while Hayden recommends the use of their HD fan clutch for cars with ac (which I plan on always retaining) I'm curious as to whether or not any of y'all are running either an SD or HD fan clutch in your foxes? I'm wondering if an SD can keep up with the AC or if I should just commit to a little fan roar with the HD clutch if it means rock hard nipple temperatures in the bird.
The final straw that broke this camel's back was my 2nd fan controller taking a dive while driving in the middle of traffic on a warm July day...
Thoughts and opinions are welcome.
The final straw that broke this camel's back was my 2nd fan controller taking a dive while driving in the middle of traffic on a warm July day...
Thoughts and opinions are welcome.
Title: Fan Clutch Selection
Post by: Aerocoupe on July 29, 2014, 05:21:58 PM
Post by: Aerocoupe on July 29, 2014, 05:21:58 PM
Get a DCC Controller and call it a day. I have had mine on the Coupe for over six years and still keeping it cool in Houston and Oklahoma heat in the summer. They are not the cheapest but not the most expensive either.
http://www.dccontrol.com/selector.htm
Darren
http://www.dccontrol.com/selector.htm
Darren
Title: Fan Clutch Selection
Post by: mcb82gt on July 29, 2014, 06:32:00 PM
Post by: mcb82gt on July 29, 2014, 06:32:00 PM
I have used the DCC piece on my old 2.3Turbo stang. Great piece, never let me down. I plan on using one again with my Mark/Taurus fan with my current car.
My fan clutch went to and I replaced it with a standard duty(wanted the cheapest because I planned on going E fan later). I has cooled my car well and the AC is very cold, and it gets hot and humid in KS, heat index 110+. It will keep me as cool or cooler than my 06 Silverado HD, which will freeze my arse off.
My fan clutch went to and I replaced it with a standard duty(wanted the cheapest because I planned on going E fan later). I has cooled my car well and the AC is very cold, and it gets hot and humid in KS, heat index 110+. It will keep me as cool or cooler than my 06 Silverado HD, which will freeze my arse off.
Title: Fan Clutch Selection
Post by: TOM Renzo on July 29, 2014, 06:41:37 PM
Post by: TOM Renzo on July 29, 2014, 06:41:37 PM
Build a fan system with redundancy. Never run a single fan setup and wire them to come on at different temps. Use 2 75AMP bosch relays one for each fan and a temp, sender for each fan and you problems are over. Clutch FANS are garbage and by the way can also fail. Especially aftermarket ones. No one uses clutch fans anymore. that is unless you have a 100 point car. Have a great evening.
Here is a setup i just finished for an early Camaro. I even made custom brackets to eliminate the ugly stock upper radiator plate. And whipped up some fancy mounting brackets as well. JR as usual painted them PORSCHE GRAY. The kid is impossible
(http://i28.photobucket.com/albums/c209/tfalconier/313AFA68-67DB-4910-AC10-66CFBCFFB337_zpsz3rh4oa6.jpg) (http://s28.photobucket.com/user/tfalconier/media/313AFA68-67DB-4910-AC10-66CFBCFFB337_zpsz3rh4oa6.jpg.html)
(http://i28.photobucket.com/albums/c209/tfalconier/D51E044E-4A2C-4361-BED6-11819CA0454F_zpsjm8uapox.jpg) (http://s28.photobucket.com/user/tfalconier/media/D51E044E-4A2C-4361-BED6-11819CA0454F_zpsjm8uapox.jpg.html)
(http://i28.photobucket.com/albums/c209/tfalconier/7C74DC70-064E-4599-88C3-D203A22CA147_zpscntlizwk.jpg) (http://s28.photobucket.com/user/tfalconier/media/7C74DC70-064E-4599-88C3-D203A22CA147_zpscntlizwk.jpg.html)
Here is a setup i just finished for an early Camaro. I even made custom brackets to eliminate the ugly stock upper radiator plate. And whipped up some fancy mounting brackets as well. JR as usual painted them PORSCHE GRAY. The kid is impossible
(http://i28.photobucket.com/albums/c209/tfalconier/313AFA68-67DB-4910-AC10-66CFBCFFB337_zpsz3rh4oa6.jpg) (http://s28.photobucket.com/user/tfalconier/media/313AFA68-67DB-4910-AC10-66CFBCFFB337_zpsz3rh4oa6.jpg.html)
(http://i28.photobucket.com/albums/c209/tfalconier/D51E044E-4A2C-4361-BED6-11819CA0454F_zpsjm8uapox.jpg) (http://s28.photobucket.com/user/tfalconier/media/D51E044E-4A2C-4361-BED6-11819CA0454F_zpsjm8uapox.jpg.html)
(http://i28.photobucket.com/albums/c209/tfalconier/7C74DC70-064E-4599-88C3-D203A22CA147_zpscntlizwk.jpg) (http://s28.photobucket.com/user/tfalconier/media/7C74DC70-064E-4599-88C3-D203A22CA147_zpscntlizwk.jpg.html)
Title: Fan Clutch Selection
Post by: GrannysBird on July 29, 2014, 07:34:36 PM
Post by: GrannysBird on July 29, 2014, 07:34:36 PM
Quote from: Aerocoupe;436550
Get a DCC Controller and call it a day. I have had mine on the Coupe for over six years and still keeping it cool in Houston and Oklahoma heat in the summer. They are not the cheapest but not the most expensive either.
http://www.dccontrol.com/selector.htm
Darren
Well I'm still not sure if I can fit a clutch fan, but if I can't that controller seem many times better than what I'm running.
Quote from: mcb82gt;436555
I have used the DCC piece on my old 2.3Turbo stang. Great piece, never let me down. I plan on using one again with my Mark/Taurus fan with my current car.
My fan clutch went to and I replaced it with a standard duty(wanted the cheapest because I planned on going E fan later). I has cooled my car well and the AC is very cold, and it gets hot and humid in KS, heat index 110+. It will keep me as cool or cooler than my 06 Silverado HD, which will freeze my arse off.
Yes, this is exactly what I wanted to find out! The biggest benefit to the mechanical fan to me at least is having cooler a/c, with my current electrical it's lackluster at best which is especially apparent when driving my 00 silverado (which has a mechanical fan ;) )
Quote from: TOM Renzo;436557
Build a fan system with redundancy. Never run a single fan setup and wire them to come on at different temps. Use 2 75AMP bosch relays one for each fan and a temp, sender for each fan and you problems are over. Clutch FANS are garbage and by the way can also fail. Especially aftermarket ones. No one uses clutch fans anymore. that is unless you have a 100 point car. Have a great evening.
Here is a setup i just finished for an early Camaro. I even made custom brackets to eliminate the ugly stock upper radiator plate. And whipped up some fancy mounting brackets as well. JR as usual painted them PORSCHE GRAY. The kid is impossible
But, that's soo much more money Tom! There are so many places where that money could be better spent! And the wiring, at this point in time if I get rid of the E fan I would only have ~5 wires in my engine bay (discounting headlight wiring and windshield wiper motor)! Down with the wires!
At this point though it's all academic as I'm pretty sure I'm going to have to do something about the radiator support if I want to add a mechanical fan. Still, now that I know that a standard duty will work just fine with my a/c I can at least gather parts or dimensions and head out from there.
Mike where did you buy your clutch? It seems like Hayden is the only name in the game so that's what I'll be going with when I do order one.
P.S. Those are some beautiful brackets and overall a very nice install Tom.
Title: Fan Clutch Selection
Post by: mcb82gt on July 29, 2014, 07:38:22 PM
Post by: mcb82gt on July 29, 2014, 07:38:22 PM
Tom, that looks really nice. How did you tap those mounts to the fans, is it a metal case?
Title: Fan Clutch Selection
Post by: mcb82gt on July 29, 2014, 07:44:33 PM
Post by: mcb82gt on July 29, 2014, 07:44:33 PM
Quote from: GrannysBird;436562
.
Mike where did you buy your clutch? It seems like Hayden is the only name in the game so that's what I'll be going with when I do order one.
I just bought the standard duty fan from Oreilly auto parts. Not sure if you have them there?
Just a standard duty replacement. Looked it up online, looks like it was the Hayden part http://www.oreillyauto.com/site/c/detail/HDN0/2723/03389.oap?year=1988&make=Mercury&model=Cougar&vi=1198605&ck=Search_03389_1198605_826&pt=03389&ppt=C0331
Title: Fan Clutch Selection
Post by: GrannysBird on July 29, 2014, 08:44:43 PM
Post by: GrannysBird on July 29, 2014, 08:44:43 PM
Quote from: mcb82gt;436565
I just bought the standard duty fan from Oreilly auto parts. Not sure if you have them there?
Just a standard duty replacement. Looked it up online, looks like it was the Hayden part http://www.oreillyauto.com/site/c/detail/HDN0/2723/03389.oap?year=1988&make=Mercury&model=Cougar&vi=1198605&ck=Search_03389_1198605_826&pt=03389&ppt=C0331
Yup I've got an oreilly's just down the block, but I tend to go to napa if I can help it. For my application though I'll be going with hayden 2705 or 2765 since my car will soon be standard rotation. First though I need to find a 20 inch fan.
Title: Fan Clutch Selection
Post by: TOM Renzo on July 29, 2014, 10:37:42 PM
Post by: TOM Renzo on July 29, 2014, 10:37:42 PM
NOPE they came with nut-certs built right in to the housing and they are 1/4 20 threads. Jegs the fans were actually cheap and work great. The secret is not to use a garbage controller and in my experience they are all garbage. Those 75 Amp Bosch relays are the ticket. They hold up very nicely and those fans do not draw anywhere near 75 amps. remember removing a clutch fan will gain you 15 Ponies. remember there are all kinds of clutch fan assemblies. Thermatic viscus and friction. Make sure you get a thermatic and that will set you back a bunch of coin. And if you have a working AC system better get the one recommended or you will be chasing down an issue of running hot in traffic. If you want to go cheap and dirty get a standard fan and dump the clutch completely. Once again no one uses a clutch fan anymore . It robs to much HP. Have a great evening guys.
Question?? You must already have an electric fan so why change it if it works for you. All you need is a good BOSCH relay and a thermal switch.
Question?? You must already have an electric fan so why change it if it works for you. All you need is a good BOSCH relay and a thermal switch.
Title: Fan Clutch Selection
Post by: thunderjet302 on July 29, 2014, 11:05:55 PM
Post by: thunderjet302 on July 29, 2014, 11:05:55 PM
I've got a Mustang police interceptor fan clutch, a 9 blade Mustang HO fan, 180* thermostat, and a two row aluminum radiator (1 inch tubes). The car runs 185*-190* all the time no matter the outside temp or if the A/C is on.
Title: Fan Clutch Selection
Post by: Haystack on July 30, 2014, 12:05:16 AM
Post by: Haystack on July 30, 2014, 12:05:16 AM
My stock tbird did fine with a single row aluminium rad, stock fan/shroud/everything and a bad clutch on the fan... i did only run it one summer though. my broken motor mounts took out the ac lines.
i plan on going.with a taurus fan and volvo fan controller with a bmw tempeture switch. i like the fact that its oem and is basically just two relays, but it will only work for a single fan.
i plan on going.with a taurus fan and volvo fan controller with a bmw tempeture switch. i like the fact that its oem and is basically just two relays, but it will only work for a single fan.
Title: Fan Clutch Selection
Post by: TOM Renzo on July 30, 2014, 06:52:03 AM
Post by: TOM Renzo on July 30, 2014, 06:52:03 AM
Bottom line anything that is powered by the engine costs you HP and fuel mileage. The mustang gained 14 HP by ford installing an electric fan from the factory. have a great day guys.
Title: Fan Clutch Selection
Post by: TOM Renzo on July 30, 2014, 06:56:38 AM
Post by: TOM Renzo on July 30, 2014, 06:56:38 AM
Quote from: thunderjet302;436583
I've got a Mustang police interceptor fan clutch, a 9 blade Mustang HO fan, 180* thermostat, and a two row aluminum radiator (1 inch tubes). The car runs 185*-190* all the time no matter the outside temp or if the A/C is on.
I see by your build you are increasing HP so why would you give up app 14 ponies by dragging around an obsolete old school clutch fan and blade when you can install an electric one and pick up some PONIES. Just a thought.
Title: Fan Clutch Selection
Post by: thunderjet302 on August 04, 2014, 06:24:58 PM
Post by: thunderjet302 on August 04, 2014, 06:24:58 PM
Quote from: TOM Renzo;436605
I see by your build you are increasing HP so why would you give up app 14 ponies by dragging around an obsolete old school clutch fan and blade when you can install an electric one and pick up some PONIES. Just a thought.
I may upgrade one day but I would have to upgrade the electrical system first. For now the fan and clutch work fine.
Title: Fan Clutch Selection
Post by: TheFoeYouKnow on August 05, 2014, 05:04:44 AM
Post by: TheFoeYouKnow on August 05, 2014, 05:04:44 AM
Build your own controller. Only way to get a reliable one. This is a simple diagram of mine, It's been dead nuts reliable for me.
Title: Fan Clutch Selection
Post by: TOM Renzo on August 05, 2014, 08:52:03 PM
Post by: TOM Renzo on August 05, 2014, 08:52:03 PM
I agree those 75 AMP Bosch relays are tried and true.
Title: Fan Clutch Selection
Post by: TheFoeYouKnow on August 07, 2014, 04:55:45 AM
Post by: TheFoeYouKnow on August 07, 2014, 04:55:45 AM
Pic before tpuppies the tabs off the sides and fitting to the rad.
Title: Fan Clutch Selection
Post by: Aerocoupe on August 07, 2014, 10:59:50 AM
Post by: Aerocoupe on August 07, 2014, 10:59:50 AM
Please pay attention to the wiring diagram Foe posted as the resistor is very important. For a Lincoln Mark VIII fan you will need to run a diode or the high inrush when it first starts will kill the fan motor in about a year or so. That nugget of info is from personal experience of wiring it without the diode.
I wired something similar back in the day and for the cost savings versus a DCC Controller I would not mess with it ever again. The DCC Controller has been flawless and can compensate for underdrive pulleys, comes with a temperature probe that is installed in-between the fins on the radiator near the outlet to the motor, an input for A/C if the car is equiped, and a cool down function can be wired (one wire from the ignition) which keeps the fan running for a couple of minutes after the car is shut off. Some people will say that they have had issues with either customer service or the unit itself but I have bought three units for myself and one for a buddy's wife to give him for a present and all have been easy transactions and worked great.
To each is their own and I do understand the satisfaction of doing it yourself and saving money in the process.
This website has basically been the one everyone else has ripped of over the years and reposted on other sites. Basically the bible for Fox Mustang owners with regards to the 3G upgrade as well as electric fans. He has some other good stuff on there too:
http://www.geocities.ws/smithmonte/Auto/MarkVIII_Fan.htm
Darren
I wired something similar back in the day and for the cost savings versus a DCC Controller I would not mess with it ever again. The DCC Controller has been flawless and can compensate for underdrive pulleys, comes with a temperature probe that is installed in-between the fins on the radiator near the outlet to the motor, an input for A/C if the car is equiped, and a cool down function can be wired (one wire from the ignition) which keeps the fan running for a couple of minutes after the car is shut off. Some people will say that they have had issues with either customer service or the unit itself but I have bought three units for myself and one for a buddy's wife to give him for a present and all have been easy transactions and worked great.
To each is their own and I do understand the satisfaction of doing it yourself and saving money in the process.
This website has basically been the one everyone else has ripped of over the years and reposted on other sites. Basically the bible for Fox Mustang owners with regards to the 3G upgrade as well as electric fans. He has some other good stuff on there too:
http://www.geocities.ws/smithmonte/Auto/MarkVIII_Fan.htm
Darren
Title: Fan Clutch Selection
Post by: TheFoeYouKnow on August 07, 2014, 11:39:38 AM
Post by: TheFoeYouKnow on August 07, 2014, 11:39:38 AM
I don't know what my resistor is going to have to do with inrush, I use it to limit current for low speed only. If the air isn't on when the high speed kicks up, the resistor isn't even a part of the conversation. I also don't know what a diode is going to do about inrush, only a soft-start or a large capacitor would be of any use.
My first electric fan had a dryer capacitor wired to it to soft-start the fan, because it was 1-speed and the motor was already bad when I salvaged the fan. The fan would draw so hard on it's startup that sometimes the engine would stall. I canned that POS, and built my own 2-speed setup, and it's been trouble-free for over a year.
My first electric fan had a dryer capacitor wired to it to soft-start the fan, because it was 1-speed and the motor was already bad when I salvaged the fan. The fan would draw so hard on it's startup that sometimes the engine would stall. I canned that POS, and built my own 2-speed setup, and it's been trouble-free for over a year.
Title: Fan Clutch Selection
Post by: Haystack on August 07, 2014, 06:41:01 PM
Post by: Haystack on August 07, 2014, 06:41:01 PM
I think the mark8 fan is way overkill for most of us. it pulls over 60amps under continuous duty. the bigblock offroad chevy guys run the taraus fan with no issue. i also like the two speeds and dual temps of the volvo controller because it will turn the fan on with less then 30 amps start and pull lesss then 30amps when the high speed kicks on.
Title: Fan Clutch Selection
Post by: Aerocoupe on August 08, 2014, 12:04:12 PM
Post by: Aerocoupe on August 08, 2014, 12:04:12 PM
Just want to clear up amperage draw with the Mark VIII and Taurus fans with regards to start up amperage and running amperage. Lots of folks have heard of the huge start up and running amperage draws of these fans with the Mark VIII being the monster. It is all just simply not true. Here is a YouTube video of a gentleman showing the amperages on a Taurus fan:
https://www.youtube.com/watch?v=gWJFzAMsIlc
Here is a writeup on these two fans:
http://www.thehollisterroadcompany.com/TaurusMarkVIIIrelay.html
Just wanted to clear that up and shed some light on this as they are not the power hungry monsters everyone swears up and down that they are. The biggest problem with most electric fan installations on cars that never had them is the lack of electrical knowledge and not using the right wire, relays, etc.
Darren
https://www.youtube.com/watch?v=gWJFzAMsIlc
Here is a writeup on these two fans:
http://www.thehollisterroadcompany.com/TaurusMarkVIIIrelay.html
Just wanted to clear that up and shed some light on this as they are not the power hungry monsters everyone swears up and down that they are. The biggest problem with most electric fan installations on cars that never had them is the lack of electrical knowledge and not using the right wire, relays, etc.
Darren
Title: Fan Clutch Selection
Post by: Aerocoupe on August 08, 2014, 12:10:12 PM
Post by: Aerocoupe on August 08, 2014, 12:10:12 PM
Foe,
With regards to my comment on the diode, I should have elaborated much more on this and thank you for calling me out on it as it was in no way complete. I was not writing down all the things I was thinking when I saw the resistor. It basically reminded me to say something about the freewheeling diode that one should install if you are using relays to run the fan. I pulled this right off of Monte's website which explains it better than I can:
FREEWHEELING DIODE
Since the motor is an inductive load and an inductor is an energy storage device, when the contacts of the relay open, the energy that is stored in the motor has no place to go. The voltage increases (negatively) and a spark is created across the relay contacts, greatly reducing the contact service life. If a diode is placed (reverse biased) across the motor, it will not conduct in normal operation but will conduct when the relay contacts are opened, thereby supressing the spark. The current is said to "freewheel" through the diode and the motor after the supply current from the battery is interrupted. This voltage spike can get unbelievably high, hundreds of volts for a 12V system. Use a 1N5404 which is rated at 3A, 400PIV.
Darren
With regards to my comment on the diode, I should have elaborated much more on this and thank you for calling me out on it as it was in no way complete. I was not writing down all the things I was thinking when I saw the resistor. It basically reminded me to say something about the freewheeling diode that one should install if you are using relays to run the fan. I pulled this right off of Monte's website which explains it better than I can:
FREEWHEELING DIODE
Since the motor is an inductive load and an inductor is an energy storage device, when the contacts of the relay open, the energy that is stored in the motor has no place to go. The voltage increases (negatively) and a spark is created across the relay contacts, greatly reducing the contact service life. If a diode is placed (reverse biased) across the motor, it will not conduct in normal operation but will conduct when the relay contacts are opened, thereby supressing the spark. The current is said to "freewheel" through the diode and the motor after the supply current from the battery is interrupted. This voltage spike can get unbelievably high, hundreds of volts for a 12V system. Use a 1N5404 which is rated at 3A, 400PIV.
Darren
Title: Fan Clutch Selection
Post by: ZondaC12 on August 08, 2014, 03:42:28 PM
Post by: ZondaC12 on August 08, 2014, 03:42:28 PM
Quote from: thunderjet302;436807
I may upgrade one day but I would have to upgrade the electrical system first. For now the fan and clutch work fine.
I shoulda stopped bitching and bought another one before the guy actually ran out of them. I want one for the black cougar too....though I may swap it from the red car, that one just doesn't come out much anymore. The black one needs to be able to do good burnouts and it has 100 more ponies. It does good but the fan doesn't come on much below 180. I run a 160 stat in both cars. Clutch is obviously intended for 180 / 195 degree stats. However, with the PI clutch in the red car, three bars all the time, and when it's hot outside, I HEAR that thing. Then it cools down and goes silent once more.
One time I tested the red cougar without any fan on and compared to having the PI clutch on in cool conditions. Seemed the same to me. I believe the claim: it cools better when needed, and when not needed, doesn't drag the engine down much. Hopefully someone will uncover another load of 'em somewhere, sometime...
Title: Fan Clutch Selection
Post by: TheFoeYouKnow on August 08, 2014, 04:54:22 PM
Post by: TheFoeYouKnow on August 08, 2014, 04:54:22 PM
Quote from: Aerocoupe;436924
Foe,
With regards to my comment on the diode, I should have elaborated much more on this and thank you for calling me out on it as it was in no way complete. I was not writing down all the things I was thinking when I saw the resistor. It basically reminded me to say something about the freewheeling diode that one should install if you are using relays to run the fan. I pulled this right off of Monte's website which explains it better than I can:
FREEWHEELING DIODE
Since the motor is an inductive load and an inductor is an energy storage device, when the contacts of the relay open, the energy that is stored in the motor has no place to go. The voltage increases (negatively) and a spark is created across the relay contacts, greatly reducing the contact service life. If a diode is placed (reverse biased) across the motor, it will not conduct in normal operation but will conduct when the relay contacts are opened, thereby supressing the spark. The current is said to "freewheel" through the diode and the motor after the supply current from the battery is interrupted. This voltage spike can get unbelievably high, hundreds of volts for a 12V system. Use a 1N5404 which is rated at 3A, 400PIV.
Darren
My first setup would ground both sides of the fan motor when everything was off, but the limitations of the setup would have made it very complex to do that AND have soft-start AND a low speed like I have now. If I damage the relays with the kickback I'll just replace them. I have a nearly endless supply as a side benefit of my job.
Title: Fan Clutch Selection
Post by: mcb82gt on August 08, 2014, 06:17:27 PM
Post by: mcb82gt on August 08, 2014, 06:17:27 PM
Quote from: Aerocoupe;436924
This voltage spike can get unbelievably high, hundreds of volts for a 12V system. Use a 1N5404 which is rated at 3A, 400PIV.
Darren
Any know a source, or where to buy something like this??
Title: Fan Clutch Selection
Post by: GrannysBird on August 09, 2014, 12:25:52 PM
Post by: GrannysBird on August 09, 2014, 12:25:52 PM
So a little information for yall: A mustang fan is much smaller in diameter than whatever came on our cars as can be seen in the photo below.
So yup. At this point in time I guess I'm either waiting to grab my other fan shroud sitting at my buddies out of town or grabbing a 20 inch fan off of another vehicle.
Also, I know this is a small community, but I feel like this forum would benefit from either some moderation or some guidelines. If someone wanted to search for information about fan clutches they'd have to sift through 2 pages of irrelevant content just to follow the actual thread. Maybe it's just irksome to me, sigh...
So yup. At this point in time I guess I'm either waiting to grab my other fan shroud sitting at my buddies out of town or grabbing a 20 inch fan off of another vehicle.
Also, I know this is a small community, but I feel like this forum would benefit from either some moderation or some guidelines. If someone wanted to search for information about fan clutches they'd have to sift through 2 pages of irrelevant content just to follow the actual thread. Maybe it's just irksome to me, sigh...
Title: Fan Clutch Selection
Post by: ZondaC12 on August 09, 2014, 02:10:24 PM
Post by: ZondaC12 on August 09, 2014, 02:10:24 PM
That wavy "flower" shape in the middle of that fan hub doesn't look right.
I bought a 9-blade Mustang fan for my black cougar, I also thought initially it was small...but I'm pretty sure it fits inside the shroud the same way the one I had did.
I'm out of town now but I'll look at it when I get home. I swear I thought it was small when it came in the mail but then I stacked it on top of my stock 7-blade and it was the same circle...
I bought a 9-blade Mustang fan for my black cougar, I also thought initially it was small...but I'm pretty sure it fits inside the shroud the same way the one I had did.
I'm out of town now but I'll look at it when I get home. I swear I thought it was small when it came in the mail but then I stacked it on top of my stock 7-blade and it was the same circle...
Title: Fan Clutch Selection
Post by: JeremyB on August 09, 2014, 04:10:59 PM
Post by: JeremyB on August 09, 2014, 04:10:59 PM
Quote from: mcb82gt;436935
Any know a source, or where to buy something like this??
http://www.radioshack.com/product/index.jsp?productId=2062579
Digikey, and Mouser are what I use for most stuff that I don't need right now.
http://www.digikey.com/product-search/en?vendor=0&keywords=1N5404
http://www.mouser.com/Search/Refine.aspx?Keyword=1N5404
Digikey and Mouser carry so many parts, sometimes it is hard to decide on what to buy. Want a 450 ohm 1/4 watt thru-hole resistor? Digikey has 25 options!
Title: Fan Clutch Selection
Post by: QUICKSHIFT on August 09, 2014, 07:34:18 PM
Post by: QUICKSHIFT on August 09, 2014, 07:34:18 PM
I've been working on my 71 Comet and experimenting with different cooling methods as I no longer race and want it for street only. I looked through my stash and found a couple of items one of which was a 88 LX HO fan. I couldn't use it due to REV rotation. I measured it and it is 18", 9 blade which looks nothing like what grannysbird posted.
On a side note, I went with a Taurus wagon fan and modified the shroud. Using a down flow rad leaves few options.
One other thing, a 35amp alt won't cut it......ask me how I know.:giggle:
On a side note, I went with a Taurus wagon fan and modified the shroud. Using a down flow rad leaves few options.
One other thing, a 35amp alt won't cut it......ask me how I know.:giggle:
Title: Fan Clutch Selection
Post by: TOM Renzo on August 09, 2014, 08:27:53 PM
Post by: TOM Renzo on August 09, 2014, 08:27:53 PM
WOW what do you know the guy uses a Bosch 75 AMP relay. Where have we heard that before?? Anyway a clamping diode is very useful no question about it. But not needed. I have been running those relays for many many years with no issues whatsoever. Never burned out a fan motor either. And never seen a car company use a clamping diode either. But it is possible some manufacturers do. The reverse EMF is a real thing but not an issue as i said could be wrong. . Never had a relay go south. But the instillation on that mustang is as crude as it comes. never mount a relay or anything close to the battery when it can corrode the electronics. I personally never use a sensor that is not physically in the coolant. And the car companies also do not do it. That is risky and can cause a false reading. Basically what is going on here is complicating a simple fan circuit and beating it to death. FAN RELAY AND SENSOR IN THE COOLANT STREAM. Done Finished and over. just me and my opinion. Have a great day guys.
Title: Fan Clutch Selection
Post by: GrannysBird on August 20, 2014, 03:28:48 PM
Post by: GrannysBird on August 20, 2014, 03:28:48 PM
So to update after installation: Holy shiznit, why did I ever use an electric fan? My A/C is colder and the car can idle with ease without the load from the e-fan. YMMV but I have a fairly aggressive cam and even with a 130 amp alternator the load of the A/C and fan both kicking on forced me to run an excessively high idle speed or alternatively enriching the A/F ratio to keep the car from stumbling. Temperature wise the engine stays at 195 which just so happens to coincide with the temperature rating of the thermostat, so I'm pretty happy as well there. If you're not drag racing, or racing, and want to retain your A/C (especially if you're running 134a) I'd highly recommend using this setup or something similar. I'm not running an automatic transmission so the standard duty clutch seems to work fine for me, but YMMV if you've got some high stall non-lockup AOD and are running A/C.
I'll be doing a longer road test later tonight and tomorrow so if anything goes awry I'll be sure to let you all know.
In case anyone wishes to duplicate my setup and retain a traditional clutch fan, here are the parts I used:
9 Bladed reverse rotation fan from a 1999 to 2004 Chevy Silverado
Hayden Standard Duty clutch 2739* (*I think) for a 1995 Chevy Blazer 4.3
87-88 Thunderbird/Cougar Fan shroud
I'll be doing a longer road test later tonight and tomorrow so if anything goes awry I'll be sure to let you all know.
In case anyone wishes to duplicate my setup and retain a traditional clutch fan, here are the parts I used:
9 Bladed reverse rotation fan from a 1999 to 2004 Chevy Silverado
Hayden Standard Duty clutch 2739* (*I think) for a 1995 Chevy Blazer 4.3
87-88 Thunderbird/Cougar Fan shroud
Title: Fan Clutch Selection
Post by: thunderjet302 on August 20, 2014, 05:52:34 PM
Post by: thunderjet302 on August 20, 2014, 05:52:34 PM
Quote from: GrannysBird;436950
So a little information for yall: A mustang fan is much smaller in diameter than whatever came on our cars as can be seen in the photo below.
So yup. At this point in time I guess I'm either waiting to grab my other fan shroud sitting at my buddies out of town or grabbing a 20 inch fan off of another vehicle.
Also, I know this is a small community, but I feel like this forum would benefit from either some moderation or some guidelines. If someone wanted to search for information about fan clutches they'd have to sift through 2 pages of irrelevant content just to follow the actual thread. Maybe it's just irksome to me, sigh...
Quote from: ZondaC12;436953
That wavy "flower" shape in the middle of that fan hub doesn't look right.
I bought a 9-blade Mustang fan for my black cougar, I also thought initially it was small...but I'm pretty sure it fits inside the shroud the same way the one I had did.
I'm out of town now but I'll look at it when I get home. I swear I thought it was small when it came in the mail but then I stacked it on top of my stock 7-blade and it was the same circle...
I've got a Mustang 9 blade fan I ordered from Mustangs Unlimited in my car. It was the same size as the stock 7 blade fan. You can see it in this picture.
(http://i198.photobucket.com/albums/aa33/thunderjet302/Thunderbird%20web/20140805_210237_resized_zpse783385b.jpg) (http://s198.photobucket.com/user/thunderjet302/media/Thunderbird%20web/20140805_210237_resized_zpse783385b.jpg.html)
With this setup (180* thermostat, Police Interceptor fan clutch, 9 blade HO fan, aluminum radiator with 2 1" rows) the car runs 180-185* all the time. Doesn't matter what outside temperature or if the A/C is on.
Title: Fan Clutch Selection
Post by: TOM Renzo on August 20, 2014, 08:50:34 PM
Post by: TOM Renzo on August 20, 2014, 08:50:34 PM
Hay if anyone wants a 4.3 clutch let me know. I have a couple of HD AC ones in stock. I never use them and i have brand new ones. I am willing to let them go CHEAP. If a clutch fan is your thing the 4.3 clutch is the one that is why i used to stock them. But i have not used one in years. Have a great evening.
Title: Fan Clutch Selection
Post by: V8Demon on August 26, 2014, 07:39:30 PM
Post by: V8Demon on August 26, 2014, 07:39:30 PM
The Mustang fan has a smaller diameter overall, however the blades themselves measure the same size. It's the center section that is larger. That being said, the 9 blade I put in wasn't Too much smaller than the stock 7 blade. Observe:
(http://www.foxtbirdcougarforums.com/attachment.php?attachmentid=33789&d=1393426939)
(http://www.foxtbirdcougarforums.com/attachment.php?attachmentid=33789&d=1393426939)