Clutch fan? - Team Camaro Tech
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post #1 of 8 (permalink) Old Mar 27th, 10, 11:52 PM Thread Starter
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mike
 
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Clutch fan?

looking to get a clutch fan "standard duty" or "heavy duty" ?
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post #2 of 8 (permalink) Old Mar 28th, 10, 10:58 AM
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Steiner
 
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Re: Clutch fan?

Heavy duty gives you more more air flow. You must use a heavy duty fan if using a heavy duty clutch. A heavy duty clutch lets the fan spin faster.

Standard duty clutch spins fan at around 60-70% of engine speed and most standard duty fans are rated for 4000 RPM, or around 6500 RPM engine speed max.

Heavy duty clutch spins fan 80-90% of engine speed. A heavy duty clutch with a standard duty fan is a recipe for disaster.

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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Last edited by Steiner; Mar 28th, 10 at 12:01 PM.
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post #3 of 8 (permalink) Old Mar 28th, 10, 11:09 AM
DT
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Re: Clutch fan?

Use a Flex fan from Flex -O-Light
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post #4 of 8 (permalink) Old Mar 28th, 10, 11:55 AM
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Steps
 
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Re: Clutch fan?

Srick with the clutch...match to your fan and engine as suggested above.
Run a forum search on the the subject, the factory clutches/fans are very effient and trouble free.

My Spelling is not incorrect...it is creative

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post #5 of 8 (permalink) Old Mar 28th, 10, 01:09 PM Thread Starter
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mike
 
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Re: Clutch fan?

Quote:
Originally Posted by Steiner View Post
Heavy duty gives you more more air flow. You must use a heavy duty fan if using a heavy duty clutch. A heavy duty clutch lets the fan spin faster.

Standard duty clutch spins fan at around 60-70% of engine speed and most standard duty fans are rated for 4000 RPM, or around 6500 RPM engine speed max.

Heavy duty clutch spins fan 80-90% of engine speed. A heavy duty clutch with a standard duty fan is a recipe for disaster.
im looking to put 7 blade 18"
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post #6 of 8 (permalink) Old Mar 28th, 10, 04:29 PM
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Re: Clutch fan?

Quote:
Originally Posted by DT View Post
Use a Flex fan from Flex -O-Light
yeah, who needs to have the best cooling setup as designed by the factory engineers when you can have a flimsy thing that flattens out at high rpm and impedes airflow thru the radiator core..

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #7 of 8 (permalink) Old Mar 28th, 10, 09:17 PM
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Steps
 
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Re: Clutch fan?

Flex fans will not pass many track scruteenering over here
and above post...
They are Bs .

Mike there is no need to go overboard on the fan...
the stock radiator is way over built if all the cores are clear
The fan is only needed at low very rpms/speeds
And the std fan moves way more air than is needed.

My Spelling is not incorrect...it is creative

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post #8 of 8 (permalink) Old Mar 28th, 10, 10:43 PM Thread Starter
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mike
 
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Re: Clutch fan?

the fan i have is stock (3947772) 7blade 18" i just wanted to know for the clucth "standard duty" or "heavy duty" ?
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