Mopar Viscous fan??

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It moves ALOT more air than a standard fan, this, I have no doubt.

Been there done that love it.
 
So moves more air which is good, any freed up HP? Are they noisy/loud?

I use one on my car, it's quiet as the regular stock one. I picked it up at a swap meet and replaced the clutch with a new unit. I also use a shroud and that car stays cool!! It's a 9 to 1, 318 with a Comp cam..HM 260. It fit well but is a little close to the radiator. As far as HP, the car does run well but is no 13 second car. I built for the street.
 
That particular fan frees up HP over other fans. Mopar sez it's good for 15 HP.

I read 2 different mags dyno results that comfirm it. How would it be nosiey? You'll never know it's there, it's a flippin fan in the engine compartment like any other fan?

I don't understand the question on how it could be loud. How does a mech. fan like that be loud to begin with?
Flex fans are nosiey.
 
i hear great things about them. gonna put one on my car one of these days. they are quiet and free up hp.
 
That particular fan frees up HP over other fans. Mopar sez it's good for 15 HP.

I read 2 different mags dyno results that comfirm it. How would it be nosiey? You'll never know it's there, it's a flippin fan in the engine compartment like any other fan?

I don't understand the question on how it could be loud. How does a mech. fan like that be loud to begin with?
Flex fans are nosiey.

yes, noisy like a flex fan, lol...thanks for all the info rumblefish, and everyone else...cheers!
 
That particular fan frees up HP over other fans. Mopar sez it's good for 15 HP.

I read 2 different mags dyno results that comfirm it. How would it be nosiey? You'll never know it's there, it's a flippin fan in the engine compartment like any other fan?

I don't understand the question on how it could be loud. How does a mech. fan like that be loud to begin with?
Flex fans are nosiey.

If I remember right, there are 2 types. One uses silicon based liquid sort of like a torque convertor, the other uses a thermostatic control built into the hub. That might have a whirring sound as it grabs. I used the silicon based hub.
 
If MoPar changed the fluid, they never said anything. The Viscous fluid can be many types of fluid and which one they )MoPar) uses may be different than what other manufactures use.

Not all viscous drive clutchs are equal. Just because they say it is a viscous fluid clutch like MoPars, doesn't mean jack. They all act differently and cost HP.
 
I run the Mopar Performance Visous Fan Package on my car. Totally quiet and does a great job keeping it cool. Not cheap but money well spent.

I am on my second one. The first one last over 20 years then the clutch started to slip (yes they had them all the way back then). I liked it so much I bought another one.
 
I was having ovrheating issues and added a MOPAR Viscous Fan along with a shroud, new water pump, and re-cored 3x radiator...
Car never goes over 165 with a 160 thermostat... gonna bump it up to 180 degrees to let engine run tad hotter.
Never thought Id have a problem with engine being too cool! :burnout:
 
Very cool! Guess I'll pick one up next week! I still need to convert my 68 cuda 318 over to the newer style 70 & up aluminum water pump...Do they take a different pulley set? Also will I need to change the outlet on my radiator to the passenger side?
 
Very cool! Guess I'll pick one up next week! I still need to convert my 68 cuda 318 over to the newer style 70 & up aluminum water pump...Do they take a different pulley set? Also will I need to change the outlet on my radiator to the passenger side?


The pulleys and alternator brackets are different because the '70 and up aluminum water pump is longer and places the fan further from the engine and closer to the radiator. You need to watch out for radiator to fan clutch clearance with that set up. Pulleys for the '70 and up are reproduced; '69 and earlier pulleys are not:

http://www.bouchillonperformance.com/BPEpulleys.asp

Yes radiator must be changed or have a local radiator shop move the outlet to passengers side. You won't be able to see you timing marks unless you already have the later style timing cover and damper.
 
The difference between the thermostatic and non is the non has a fixed amount of slip where the thermostatic the slippage is variable by temp. Neither of them lock up.
I pieced a system together for my car. Purchased a thermostatic clutch at the local parts store for about $40 and picked up a fan from the junkyard for a couple of bucks. If I recall the fan came from an 80's GM, Cutlass I think.

It was a simple bolt on and didn't require any changes to pulleys or brackets.
 
The fan clutch will lock up when things get too hot and will sound like a B-17 on a take-off roll. As soon as the temp comes down it will gradually drop down to a coast.
And Mother Mopar did not put them on just to be different--they work!

15-20 hp over a direct drive fan.
 
The fan clutch will lock up when things get too hot and will sound like a B-17 on a take-off roll. As soon as the temp comes down it will gradually drop down to a coast.
And Mother Mopar did not put them on just to be different--they work!

15-20 hp over a direct drive fan.

Neither the thermostatic or non thermostatic clutch fans lock up. The amount of viscous coupling varies in the themostatic clutch but it never fully locks up.
 
I don't know squat about the lock-up question but I do know the reason summit and everybody else has had them marked down in price for the last year or so is because Mopar has been selling them off cheap, I got mine from the local dealership and saved both on the price compared to the aftermarket parts guy's but there was no shipping charge either{ think I paid @ 50 bucks Canadian },just look up the part # on the Mopar Performance site and call your local parts department -easy and cheap just way i like my ladies .Now if they would only slash the price on a 440 smallblock crate I would have something worth cooling eh!8)
 
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