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Has anyone had any success dampening some of the sewing machine noise you get with a cam and head package. Maybe some dampening material on top of the valve covers? I love the added power but the valve train noise is getting out dated very quickly.
The only problem with that is how would you mount the coil brackets?
Check out your headers by the head. They let a lot of noise out too. Mine sound like somebody is tapping them lightly with a hammer. I wonder if wrapping them would help.
I've got the sewing machine sound at certain rpm's in certain gears. I've never heard it standing outside of my car though. Only inside at low rpm's. Its really not that obnoxious for me though.
I have heard that dual v/springs are much quieter because they have combined tension instead of being a stiff single coil.Not sure if this will help.
I've got dual valve springs. I hear the sewing machine noise going on, but, like I said earlier, it's not too obnoxious. I still hear it though at certain rpm's.
From: Sunny Earthquake Country, USA On the Left Coast (which is becoming more Right!)
Adjustables...
Originally Posted by TomsZ06
Has anyone had any success dampening some of the sewing machine noise you get with a cam and head package. Maybe some dampening material on top of the valve covers? I love the added power but the valve train noise is getting out dated very quickly.
I had the same problem and Andy installed Comp Pro Magnum roller rockers that are adjustable-That got rid of 75% of the racket!