will a V8 fan blade work on a 300 TDI - Defender Source
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  #1  
Old January 18th, 2011, 11:12 AM
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Clark Bowen
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will a V8 fan blade work on a 300 TDI

before I spend the money to buy another one
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  #2  
Old January 18th, 2011, 11:29 AM
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jim pendleton
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No the blades are backwards. The older V-belt fan has blades the correct pitch but it is a smaller diameter. Get a new one for 300tdi from Rovers North if you need one in a hurry.

I may have a used one if you are in a bind. Or I have flex fans with adapters.
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  #3  
Old January 18th, 2011, 11:51 AM
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Clark Bowen
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Pendy...

A used one would be fine.
Can I PayPal you?
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  #4  
Old January 18th, 2011, 02:26 PM
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jim pendleton
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Do you need the blade and clutch?

Paypal is fine Let me lay my hands on it first.
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  #5  
Old January 19th, 2011, 06:07 PM
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Clark Bowen
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Jim....

Would you call me or vice versa. I want to discuss using a Taurus fan vs. your no-clutch setup on my 300 TDI.
My number is 541-708-1943

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  #6  
Old January 19th, 2011, 06:48 PM
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What is a no-clutch setup? Is it locked some way and on all the time?
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  #7  
Old January 19th, 2011, 07:21 PM
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jim pendleton
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Quote:
Originally Posted by DD90 View Post
What is a no-clutch setup? Is it locked some way and on all the time?
Have a hub made to run a flex fan

I am not a believer in an electric fan for the diesel. No redundancy and does not push enough air when in a heavy load situation. Be nice for winter time if a person were willing to switch it out when ambient temps changed.
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  #8  
Old January 19th, 2011, 07:39 PM
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That looks nice.

What's the advantage of that over standard setup with a clutch?

How will that run better in the winter?
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  #9  
Old January 19th, 2011, 08:44 PM
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jim pendleton
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Sorry for the confusion. I meant the electric fan would be nice to run in the winter time. It would allow the engine to make temperature quicker. But I believe they are all not up to the task of cooling the engine in North America summer temps. Even the taurus fan.

The flex fan moves more air then the Land Rover setup with a clutch. Seems to be needed on trucks that have been "optimized"

Quote:
Originally Posted by DD90 View Post
That looks nice.

What's the advantage of that over standard setup with a clutch?

How will that run better in the winter?
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  #10  
Old January 19th, 2011, 09:11 PM
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Someone correct me if I'm wrong...........

I think most of the clutch/belt driven fans are designed to do most of their work at "low RPM", ie idle/traffic. This is obviously when you have less "pushed" air from traveling at speed. This is because the clutch engages at these times and essentially "freewheels" at higher RPM's (over 2,400), and essentially maintains a fairly constant RPM irregardless the engines RPM. "At speed" however I don't think these types of fans do much.

It's possible the clutch/belt fans pull as much air as the electric fans when they are both engaged. I'm not arguing over "efficiency", ie HP, as this is debatable. I'm just talking CFM. The question is "does the electric fan help when the truck is "at speed" over the clutch/belt fan???????

I believe the flex fan may be better than the clutch/belt fan as it essentially is "on" all the time. At higher RPM the blades deflect to decrease drag on the fan, ie better efficiency. Similar to a "clutch" but without the clutch.

I think the more interesting question I may post separately is what is best for the diesel?? Especially in winter??

These run so cold I almost feel that removing the fan altogether would likely be fine. At idle/traffic the diesel generates little heat. It's only under load that it gets hot. This is when the fan is really needed and may involve times where there is higher loads and/or RPM's but little "velocity", off-roading. Now you need a fan to really pull a fair amount of air. Here I think is where the belt and flex fans are best over the electrics.

Ideally it would be nice to have a belt driven fan but with a clutch that can be electrically operated. Is there such a thing??????
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  #11  
Old January 19th, 2011, 09:17 PM
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Clark Bowen
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