Push Or Pull
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Originally Posted by SPIKESDAD
Thinking Of Changing Out The Fan On My 78-currently Has A Push Fan With Clutch {that Rattles Until Its Warmed Up A Bit}
Any Suggestions ??
Any Suggestions ??
Rich
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by SPIKESDAD
Thinking Of Changing Out The Fan On My 78-currently Has A Push Fan With Clutch {that Rattles Until Its Warmed Up A Bit}
Any Suggestions ??
Any Suggestions ??
Suggestion-replace the clutch(and the pump)
Racer
Joined: Dec 2005
Posts: 325
Likes: 0
From: Partlow VA
Originally Posted by DWncchs
You must mean a pull fan with a clutch-that rattles
Suggestion-replace the clutch(and the pump)
Suggestion-replace the clutch(and the pump)
If it's a stock 78 fan than it is a pull fan, and you will need to replace both the water pump and fan clutch. Also while you have it apart check the fan blades for cracks. Replace the fan if you find any cracks!!
Thread Starter
Instructor
Joined: Sep 2006
Posts: 100
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From: MISSOULA MONTANA
The Fan Thats On It Is A Push Fan ! The Noise {rattle} I Hear Is Only Heard When Its First Started. After Its Run For A Minute Or Two It Goes Away. It Only Does It When Its First Started And Never When The Engine Is Warm.
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Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by SPIKESDAD
The Fan Thats On It Is A Push Fan ! The Noise {rattle} I Hear Is Only Heard When Its First Started. After Its Run For A Minute Or Two It Goes Away. It Only Does It When Its First Started And Never When The Engine Is Warm.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by SPIKESDAD
The Fan Thats On It Is A Push Fan ! The Noise {rattle} I Hear Is Only Heard When Its First Started. After Its Run For A Minute Or Two It Goes Away. It Only Does It When Its First Started And Never When The Engine Is Warm.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Originally Posted by SPIKESDAD
Thinking Of Changing Out The Fan On My 78-currently Has A Push Fan With Clutch {that Rattles Until Its Warmed Up A Bit}
Any Suggestions ??
Any Suggestions ??
I never heard of a mechanical push fan. All mechanical fans pull the air through the rad. If it is electric it wouldn't have a clutch.
If you are going electric you want a puller, They are more efficient and you will run into problems with a fan infront of the rad. When you open the hood it will hit the fan.
That said I run both. A puller behind the rad and an electric pusher in front
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Why is everyone yelling? I don't know what we're yelling about.
ORIGINAL POSTER - You're a cig smoker. You're saying, with you leaning over the fender, and smokeing, that the second hand stuff that's giving me lung cancer is being pushed through the rad towards the nose of the car?
If this is true, you have two problems, and not just one. The clutch is bad, and may have damaged the water pump. The other problem is fan pitch. Can you take a few pictures of the fan while it's NOT moving? We can tell you if the blades are incorrect or not.
ORIGINAL POSTER - You're a cig smoker. You're saying, with you leaning over the fender, and smokeing, that the second hand stuff that's giving me lung cancer is being pushed through the rad towards the nose of the car?
If this is true, you have two problems, and not just one. The clutch is bad, and may have damaged the water pump. The other problem is fan pitch. Can you take a few pictures of the fan while it's NOT moving? We can tell you if the blades are incorrect or not.
Thread Starter
Instructor
Joined: Sep 2006
Posts: 100
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From: MISSOULA MONTANA
That Right Don't Stand In Front--cause Thats Where It Goes-its Apparent That At Sometime The Front End Has Had Some Damage And Had Been Repaired. And The Old Farmer Who Owned This Car Could Have Done Anything--so I Will Go To A Pull Fan,the Way It Should Be.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Spikesdad:
Within the last coupla weeks ... there was a post from a fellow who put up pics of very nice looking engine bay ... and then someone noticed that the fan blades had wrong pitch (WAY wrong) ... sure enough, he had an aftermarket Vbelt-driven, waterpump-mounted fan on it and the blades were made for reverse rotation. The Vbelt-driven, waterpump-mounted fan on a vette is designed to pull air from front of car through rad and into engine bay. If yours ain't doing that, it's wrong and it cannot efficiently cool.
Within the last coupla weeks ... there was a post from a fellow who put up pics of very nice looking engine bay ... and then someone noticed that the fan blades had wrong pitch (WAY wrong) ... sure enough, he had an aftermarket Vbelt-driven, waterpump-mounted fan on it and the blades were made for reverse rotation. The Vbelt-driven, waterpump-mounted fan on a vette is designed to pull air from front of car through rad and into engine bay. If yours ain't doing that, it's wrong and it cannot efficiently cool.