Hervey’s sound dampening kit? Get from “ken”?

[Redsquall]

I heard that Hervey simply resells the kit from somebody named Ken. The price is $129 now. Seems like a lot for some rubber. Does anybody know who Ken is?

[Michael]

I heard that Hervey simply resells the kit from somebody named Ken. The price is $129 now. Seems like a lot for some rubber. Does anybody know who Ken is?

Hervey pretty much resells everything.

Check out post #19 of this thread and tell me you want to give any business to that POS

http://dmctalk.org/showthread.php?14716-John-Hervey-Strikes-again/page2&highlight=Specialt

[DMC-81]

Here's a product that was recommended in post 56 of the following thread:

https://www.fatmat.com/shop/50-sq-ft-mega-mat-butyl-bulk-pack-install-kit-included-23297

Price:$129.00

http://dmctalk.org/showthread.php?439-New-carpet-soundproofing-and-dynamat-any-tips

Ken K. (legendary Koncelik presumably) was mentioned in post 44


As for Hervey:
There are so many stories about Hervey and his business that I've heard and or experienced myself. Here a quote that sums it up:

"The bitterness of poor quality remains long after the sweetness of low price is forgotten."
- Benjamin Franklin

I still have a box of his (uninstalled) crap somewhere that I bought before learning about this vendor.

I just literally heard another story from a DCS club member that bought a part from Hervey, and soon after he installed it, it failed. Of course, when called, Hervey accused the customer (a talented, meticulous and experienced restorer of multiple cars) of damaging it somehow. Rather than arguing against Hervey's ridulous claims on what happened to the brand new part, the club member bought another part from a different vendor.

How audacious of him to claim a "3 year limited warranty", on his website and then bully a non-confrontational person so that he doesn't have to honor it. Apparently the warranty is "limited" to a customer willing and able to defeat Hervey in a debate. I guess John Hervey's business philosophy makes sense after you read post 19 that Michael linked to.

It's your car, but I'd recommend finding your sound dampening kit elsewhere.

[Redsquall]

That’s pretty crazy. Thanks guys. That kid looks pretty good.

[David T]

For all of the complaints about John H, he has many happy customers. As with any vendor you have to pick and choose what you want and some are better at certain parts and service than others. As for a "sound deadening kit" go buy some pads at a local store and save the shipping. You can make it custom fit the car with a pair of scissors. Just be aware the good stuff is HEAVY so don't over do it.

[Redsquall]

For all of the complaints about John H, he has many happy customers. As with any vendor you have to pick and choose what you want and some are better at certain parts and service than others. As for a "sound deadening kit" go buy some pads at a local store and save the shipping. You can make it custom fit the car with a pair of scissors. Just be aware the good stuff is HEAVY so don't over do it.

Thanks Dave. When you say pads – are you saying you can just go buy a big sheet of thick rubber to cut up? Where do you get that? Thank you

[opethmike]

Mustaches must stick together!

[David T]

You can buy it in squares about 2 feet square or some places sell it in rolls. Some of it is backed with aluminum foil and some of it has adhesive applied so they are "peel and stick". Check out your local auto store or Eastwood.com.

[Lwanmtr]

I used the Fatmat myself and did the whole of my interior for pretty cheap.

[DMC-81]

You can buy it in squares about 2 feet square or some places sell it in rolls. Some of it is backed with aluminum foil and some of it has adhesive applied so they are "peel and stick". Check out your local auto store or Eastwood.com.

Yes, you can get products at auto parts stores (like Thermo-Tech # 14720 for $56 at Auto Zone), but I would check reviews on these.

Eastwood just resells Dynamat Extreme , 36 sq ft for $229 plus shipping. If you want to get the same product (#11675), and save the shipping (get it shipped to your local store), you can buy it from Walmart.com for $150, item # 554223413. I find Eastwood has some good products but they are somewhat pricey. I would see what value you're getting for the extra $79 plus shipping on the identical item.

Of course, The Fatmat option is 50 sqft for $129, free shipping direct from the manufacturer in Ohio. I see that there are at least a couple members (like Rob ^ ) that have used it that you can ask for reviews of the product.

Some good recommendations are what I'd be looking for on this solution as its a fair amount of work and hard to remove.

[FABombjoy]

Butyl tapes are great for killing panel resonance. There is a lot of panel resonance in this car, so this is helpful.

There is a lot written on the subject of sound dampening / damping / deadening but these are helpful:
https://www.sounddeadenershowdown.com/products
https://knowledge.sonicelectronix.com/car-audio-and-video/accessories-and-installation/sound-dampening-guide/

Exclusively using butyl sheets tapes may not the optimal strategy. Butyl to limit fiberglass panel resonance but use a foam/vinyl combo on top to really block sound. The factory carpet foam with rubber top in the firewall area was on the right track. I rebuilt the "foam triangle" between the fusepanel / ECU tray with carpet pad & dense rubber mat - this matched the height of the original piece. Then installed some closed-cell foam / mass load vinyl along the firewall and the engine noise is noticeably reduced. I'll be pulling the old carpet pad from under the seats and replacing with MLV/CCF, too, so see if further reductions in wind/road noise are possible.

[dn010]

Butyl tapes are great for killing panel resonance. There is a lot of panel resonance in this car, so this is helpful.

There is a lot written on the subject of sound dampening / damping / deadening but these are helpful:
https://www.sounddeadenershowdown.com/products
https://knowledge.sonicelectronix.com/car-audio-and-video/accessories-and-installation/sound-dampening-guide/

Exclusively using butyl sheets tapes may not the optimal strategy. Butyl to limit fiberglass panel resonance but use a foam/vinyl combo on top to really block sound. The factory carpet foam with rubber top in the firewall area was on the right track. I rebuilt the "foam triangle" between the fusepanel / ECU tray with carpet pad & dense rubber mat - this matched the height of the original piece. Then installed some closed-cell foam / mass load vinyl along the firewall and the engine noise is noticeably reduced. I'll be pulling the old carpet pad from under the seats and replacing with MLV/CCF, too, so see if further reductions in wind/road noise are possible.

Thanks for posting that, the engine noise is so loud in my car I'm dying to find a way to quiet it down. And to think 15 years ago I actually enjoyed all the noise...

[FABombjoy]

I do have a "before" recording - I'll try to get an "after" as well.

Unfortunately the before-recording has the sounds of an open wastegate dump and is on my old tires / wheels. There may be enough cruising for a reasonable comparison. The sound goal is "civilized touring performance" so I've been happy to add some weight in exchange for pleasant long-distance cruising. Having stock manifolds -> turbo -> muffler will almost always be a much quieter than any header setup.

I have a huge roll of MLV/CCF for the interior. This is the side profile.
58055

A layer cut to fit the rear parcel panel.
58056

Old -vs- new engine/trans "triangle" pad under the parcel shelf carpet
58054

The triangle is just this:
https://www.homedepot.com/p/TrafficMASTER-2-ft-x-10-ft-Black-Rubber-Flooring-20-sq-ft-roll-MT4000113/301153300
contact cemented to:
https://www.homedepot.com/p/StepAhead-7-16-in-Thick-Green-8-lb-Density-Rebond-Carpet-Pad-150553408-33/202616234

And then another layer of MLV/CCF cut to the same size as the loose parcel carpet over top.

The hollow areas behind the parcel are also stuffed with odds and ends of loose carpet foam

I could have used MLV/CCF exclusively for the triangle pad, but I tend to use the parcel area a lot. With the amount of foam needed to level-out the surface relative to the ECU and fuse covers I was concerned about heavy items causing a Tempur-Pedic effect and leaving dents/divots in the surface :D

[David T]

One way to install sound deadening is to use strips of the rubber to add mass to the panel so it won't resonate. Cover with closed cell foam. Could take some experimentation to get it optimized but you can wind up with a better, cheaper job with less weight. You should also use metal foil to help insulate and reduce thermal conduction. As long as you are dong this, anything you can do to help the A/C is a good thing! Make sure any openings are well sealed so sound can't get in easily. If the motor is very noisy maybe you need exhaust manifold gaskets?

[iflights]

Agreed on doing some heat reduction work while you are at it. I found this site which has some interesting solutions for our heat challenges.

Have not used any of their products, but seriously thinking about it.

https://www.heatshieldproducts.com/automotive