Project Danger Cart
Thread Starter
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
i also drive mine 45 miles minimum every day with a flowmaster 40 howling below the floorboards
CF Veteran
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
Good point.
My exhaust dumped into my cargo area for a few months, it sucked ***.
CF Veteran
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
No, I don't lick fish.



Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
Dukie do you have a link for you sound deadening mats? Also are they water resistant/proof? I'm curious about doing this for mine too. Even with the piece of carpet that I cut out and thre in the back cargo area, when I have my A/C on and turn my head, it's cool on one side of my face and roasting on the other side.
Thread Starter
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
This is the sound deadener i bought - 2 layers of foil and a 50mil butyl substrate
SD7 Super Sound Deadener Double No Smell Aluminum 100 Butyl Dynamat Sample | eBay
Everywhere I researched said that Butyl is the material you want for this - it doesn't smell like asphalt-based products, and more importantly it doesn't melt. It also is a viscoelastic material (unlike asphalt), which makes it a much better vibration dampener - or more accurately it's a "constrained layer viscoelastic vibration damper" (CLD).
SD7 Super Sound Deadener Double No Smell Aluminum 100 Butyl Dynamat Sample | eBay
Everywhere I researched said that Butyl is the material you want for this - it doesn't smell like asphalt-based products, and more importantly it doesn't melt. It also is a viscoelastic material (unlike asphalt), which makes it a much better vibration dampener - or more accurately it's a "constrained layer viscoelastic vibration damper" (CLD).
Last edited by dukie564; Sep 20, 2013 at 08:14 AM.
CF Veteran
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
This is the sound deadener i bought - 2 layers of foil and a 50mil butyl substrate
SD7 Super Sound Deadener Double No Smell Aluminum 100 Butyl Dynamat Sample | eBay
Everywhere I researched said that Butyl is the material you want for this - it doesn't smell like asphalt-based products, and more importantly it doesn't melt. It also is a viscoelastic material (unlike asphalt), which makes it a much better vibration dampener - or more accurately it's a "constrained layer viscoelastic vibration damper" (CLD).
SD7 Super Sound Deadener Double No Smell Aluminum 100 Butyl Dynamat Sample | eBay
Everywhere I researched said that Butyl is the material you want for this - it doesn't smell like asphalt-based products, and more importantly it doesn't melt. It also is a viscoelastic material (unlike asphalt), which makes it a much better vibration dampener - or more accurately it's a "constrained layer viscoelastic vibration damper" (CLD).
Thread Starter
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
i'll be roughening it up and using epoxy primer before the bedliner. I doubt it would stick to it well without doing the epoxy primer first.
CF Veteran
Joined: Feb 2012
Posts: 2,961
Likes: 0
From: Sykesville, Md
Year: 2000
Model: Cherokee
Engine: 4.0
Thread Starter
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
yea - except the rep for monstaliner specifically forbids the use of self-etching primer
CF Veteran
Joined: Feb 2012
Posts: 2,961
Likes: 0
From: Sykesville, Md
Year: 2000
Model: Cherokee
Engine: 4.0
based on what? fear of out gassing? full cure then locked in with a 2K epoxy there will be no out gassing. and we can then ensure anchor to the substrate. That foil is pretty slick... stuff might not mechanically adhere
Thread Starter
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
testing from what i understand, supposedly they have had adhesion issues - i guess the coating doesn't like phosphic acid.
With 2K epoxy over top though you're probably right it'll be fine...i'll send him an email to ask for his recommendation.
With 2K epoxy over top though you're probably right it'll be fine...i'll send him an email to ask for his recommendation.
CF Veteran
Joined: Feb 2012
Posts: 2,961
Likes: 0
From: Sykesville, Md
Year: 2000
Model: Cherokee
Engine: 4.0
We have had problems with some coating breakdown sue to the etch, so we do exactly that and use the etch as an adhesion promoter then lock it down with the epoxy and shoot top coat... I have some MIL-DTL-53022 we can lock it down with.


