Do you think that if you dynamatted the hood, and the firewall, that the engine would be quieter from outside the car, and in the passenger area? That might be a dumb question, I have no experience with dynamat.

 

I don't know about any of you 3.slow guys, but my motor gets pretty damn hot at times. I plan on keeping mine on until the day it falls off on its own. I'll worry about it then...

 

depends on the material you use. my wife's camry has a fair amount of form fitted sound absorption material inside the engine bay (on the firewall). that camry is pretty quiet. on the other hand, my 4runner does not and it is noisy. granted, my engine is louder but since i did my sound deadening mod, my cabin is much quieter

bob

 

Not much...Its paper, thats all it is..

 

If its true that aint any on the truck trucks than it's only there to make soccer moms and families happy. One who would own's a SC who like to let people know would probally would take it off. hahah

 

What was your sound deadening mod?

 

You bet I do.

About a week ago we had an old bronco light up right in an intersection. Nothing a hundred gallons of afff through a piercing nozzle couldn't put out though.

Oh if only I had a camera to get the look on that guys face when we blasted the nozzle straight through the fender. It was a gonner anyway.

-Brotherhood-
Lamm

 

I thought it was a fire retardant material that would extinguish a fire in the engine by smothering it.

 

It's intended both for heat insulation to protect the paint and sound deadener, mostly sound deadener.
After a number of years the stuff generally gets a nice coating of oily grime, and in the case of an engine fire, burns quite well...

 

my 98 trd has it but my 98 2.7ltr doesn't have it. I believe it is more of a sound proofing option...

 

I decided to rip mine out. I know for a fact is shure as hell won't help in any fire. I may put in some vents this summer too now.

Lamm

 

it's main function is to act as a fire inhibitor. should an engine fire break out, the heat causes the mesh like material to drop first smothering the fire. I have one on my 00 Taco but it is starting to sag.

 

My hood insulation was removed last year when putting in a new radiator. Now my hood is fading, BADLY! What's good to replace it with other than that nasty yellow stuff?

 

Mine's been missing for over three years now, since the paint job was done. No issues with the paint from heat. So far.
On the other hand, the paint on the hood of my 85 looking dry and crackly at about 13 years, and the pad was still under that hood.
I don't know what conclusions could be drawn from that small a sampling, just sharing.

They do make a nice non-absorbent heat and sound insulating material. I remember seeing diesel pickups done with it in magazines a few years back. If I remember right it looked a lot like that foil bubble plastic they wrap water heaters with, but was heavier stuff. You might look for that.

 

It is a good Idea to have the Insulator pad. I just wish they were cheaper!!!!!

http://www.trademotion.com/partlocat...=2&catalogid=2

 

On my '89, I sprayed the inside of the hood with some ceramic sound absorbing material. (I also filled in the grooves in the bed with it) Been a long time - sorry I don't remember the name.

Then I got some of that common auto soundproofing stuff that looks like carpet mat with a foil surface, cut it to fit and used regular body panel clips into the factory holes. It drooped a bit but never caused any problems. It also helped keep the inside of the hood clean - I would drop the foil part for shows.

I have also seen A LOT of people use the foil backed Dynamat cut to fit in between the stiffening ribs. Looks really sharp, but a major PITA to do well, and if you dont do it well, it looks like a$$.

 

My stock hood didn't have it and I most certainly don't have it on my fiberglass hood.

 

It's available and it's not expensive. I found it in Summit's catalog for example, 4'x5' sheets.
They also have a neat spray-on stuff - just like bedliner but it's sound and heat insulation.

 

I took mine off, put down 4 layers of sound deadening and then replaced the insulation, AMAZINGLY more quiet I was very impressed...did that on my 2nd gen, I'll probably just leave it on the 3rd gen.

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