Technical Lakester headers noise control: baffles vs baffles with fiberglass wrap comparison

So I just broke in my cam on my warmed up flatty (60 over, 3/8 potvin cam etc etc etc). It was real loud but sounded great with the lakester headers. After a few weeks of pulling it in and out of the garage to get everything finished for it’s maiden ride I’ve come to thinking it’s way too loud to enjoy a long drive. So I bought some fiberglass packing and strapped it on the baffles. Here’s what I found and figured I’d share.
Here’s the decibel info when sitting in the drivers seat.
OPEN HEADER……..BAFFLES………..WRAPPED BAFFLES


I’ll post videos next.

 

BAFFLES ONLY
https://youtube.com/shorts/nO-O2Nr7a5M?feature=shared
BAFFLES WITH FIBERGLASS WRAP
https://youtube.com/shorts/Cq2AzMpoPf0?feature=shared

 

I love it when people post results-or even solutions to a problem previously posted. Really good video!

1. It sounds like maybe the idle was a bit slower with the wraps? Maybe that's just the high frequency sounds being muffled?

2. Can you please do a vid with either a drive by a stationary camera, or an in-cockpit view? To get an idea of how the system sounds at cruise? (even if you only do the wrapped one. I wouldn't ask you to take the wrap back off again unless it's super easy)

-rick

 

Yes the ear piercing highs were removed with the wrap. I’ll get a driving video when I take it on its maiden voyage.
I thought the idle was slower also but the tach was around 900 on both.

 

That's awesome. A 15dB decrease in the driver's seat is significant.

 

Great car....love the color....thanks for taking the time for this.

 

Can't wait to see it out on the road here!

 

I like the deeper, throaty sound with the wrap best.

Not just because of noise reduction but because of the richer deeper sound.

.

 

Thanks for posting this. Sounds great with both. The baffle/wrap version is a bit too tame for me, but I didn't hear the open version (if you have one) I just got mine installed and running. Red's headers and short open pipe to '35 driveshaft. It's really loud, but that's inside the garage. I think I'm going to need to add baffles for at least the early morning drives.

Can you provide links on where you got the baffles?
Thanks!

 

Baffles were with pipes. just regular ones you can get from speedway. this is the link to the fiberglass matting.
Amazon.com: P1Tools Motorcycle Fiberglass Exhaust Muffler Mat for 2-Stroke 4-Stroke ATV Motorcycle Dirt Bike Repack Exhaust Pipe Muffler Silencer Universal Wrap : Automotive

 

I'd like to run over to your shop sometime. Either with the roadster or the chopped Merc.