to noisy 4 me
Thread Starter
Racer
Joined: Dec 2012
Posts: 487
Likes: 66
From: Rhode Island
to noisy 4 me
HI- every 1 I have a 70 small block with ac and the heater blower/fan died so I punched a new one after I installed it very noisy.how do I get it to be more quiet.thanks 4 the help
Pro
Joined: Aug 2010
Posts: 651
Likes: 452
From: Napa, CA
Can you describe “too noisy” a little better? Is it rattling, buzzing, squealing, whistling? At what speed setting is it exhibiting the noise? Is it louder than the original was? Is the new blower actually new or a known good used unit? Did you test it before you installed it and the noise intensity has changed after it was installed? In short, help us help you. How about some pics of the install?
Pro
Joined: Aug 2010
Posts: 651
Likes: 452
From: Napa, CA
I’d check for loose blend door or Ill fitting ducting that’s literally behaving like a reed when air flows over or past it. Plug the gaps, tape down any loose parts, tighten any loose hardware. Also, are you sure the rattle is emitting from the blower and or case? Investigate transient noise that may be coming from a component or nearby material that is being stimulated/excited by the airflow. Welcome to the sleuthing side of NVH/Buzz, squeak & rattle reduction engineering.
PS, or you could just install side pipes to drown it out 👍🏻
Ken
PS, or you could just install side pipes to drown it out 👍🏻
Ken
Thread Starter
Racer
Joined: Dec 2012
Posts: 487
Likes: 66
From: Rhode Island
I rebuilt the ac and every thing else I played with the new fan and I had to find a sweet spot for the fan and fixed it good for now will get it better when I can get the car running and try it with vacuum thanks 4 your help
