Team Chevelle banner
Cancel

Clutch Fan Noise

1065 Views 3 Replies 3 Participants Last post by  LeoP, 
A
At engine RPM's above 3000 my 5 bladed clutch fan is extremely loud. It is so loud that I do not like to exceed 3000 RPM as it very noisy. I'm not sure if the noise I hear is fan-tip speed or the clutch its self but the noise is alarming. It is a belt driven system and today I removed the clutch and fan as a unit and drove the car with the water pump and alternator only. It is quiet at higher RPM's so the noise is coming from either the fan or the clutch. I'm unable to bolt the fan only directly to the water pump pulley without the clutch so isolating one from the other is not available with the equipment I have. Has any of you experienced a noisy fan clutch? As I read about fan clutches, I see where they are supposed to slip at higher RPM's and when the engine is cold. I believe my fan clutch is engaged all of the time and perhaps the noise I hear is the clutch complaining. Can someone recommend a quality fan clutch? I have SBC with a short water pump and minimal radiator clearance. If I replace the fan clutch I need one that is less than 3" deep. Here is what I have.
Thanks
Al
Ceiling fan Material property Auto part Petal Automotive wheel system
Vehicle registration plate Car Hood Vehicle Motor vehicle
See less See more
2
Reply
Save
Like
1 - 1 of 4 Posts
billdini
Al, Hayden makes a HD and standard clutch thermo controlled. They also sell a non thermo slip clutch. I am using the same 5 blade fan as you with my L79 with thermo standard clutch . The difference between a HD and standard thermo clutch is at what temp it engages and how much slippage the clutch allows and at what temperature before it locks. Obviously a HD is louder. Mine is a standard Hayden 2710 and it’s not loud at all. You could have a thermo HD or a non thermo installed. It could also be defective. Here is a pic of mine a few years back.
Wheel Motor vehicle Automotive tire Tire Hood
See less See more
Reply
Save
Like
  • Like
Reactions: 1
1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Team Chevelle
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Bench Racing Performance Engine Body Shop Chevelle Tech
Top