how much does underhood pad do?

[Soundguy]

another report.

diesel smell is 100% gone inside the vehicle.

outside it.. there is a faint hint of diesel.. that i'll call normal around a 13yr old diesel truck.

last hting I did was spray some of that odor neutralizing spray in and around the intake vents with air turned on.. then over to max and around the interior vents.

got rid of the diesel AND the cocunut attack smell.

noise is barely noticeably different.

I may be finally good to go..

 

[schmism]

lets us know how the paint fairs in the following FL summers :thumbsup:

 

[dodge man]

Yeah, the dyna mat stuff probably won't really "soak up" the sound, it probably has to be kind of fuzzy.

 

[Soundguy]

lets us know how the paint fairs in the following FL summers :thumbsup:

will do.. however looking at my 250 work truck with 6.0psd.. it has no matting... and no paint issues.

 

[clemsonfor]

I always thought the hood pad was to keep noise down and protect the paint on the hood. It was my understanding that the hood would get hot enough to bake the paint off the hood from underneath.

The later cant be true if all these folks who have a bit newver powerstroke have no hood pad, and the motor actually makes more power!

 

[boatyard]

I thought it was interesting that the pad under the hood of my Volvo is designed as a sound barrier, but I read that it is also designed to drop off the hood during a fire, and slump down onto the fire and help to suppress it. True for other brands? Not true?

 

[Soundguy]

The later cant be true if all these folks who have a bit newver powerstroke have no hood pad, and the motor actually makes more power!

yep.. when this all started i looked at both my 99 7.3's and didn't even think about the 04 6.0.. sure enough.. no pad under it's hood.. just metal... and it makes more hp as mentioned. more hp must mean more heat I'd think...

in any case.. I'm experience no ill effects without the pad so far. at highway speed.. no diference in sound.

maybee a slight tonal change at startup when it catches after rolling over a second..e tc.

I have some oil eater a friend sent me and will try to see if it cleans the pad.. otherwise i'm calling this chapter closed.


truck no longer smells and ac and vent are clear and clean..

 

[sparc]

How about using some Dynamat, never used their product under the hood but I have used it in the cab/interior. Works well for me.

Hoodliner

Dave

I was going to sugest Dynamat as I know a few friends who used it on their Hummers and were pleased with the results.
They did it more for sound deadening though.

The Hummer H1 with the GM 6.5L diesel is very noisey, at least my 95 was. They added some sound deadening in the 97 model year IIRC.

 

[Soundguy]

seems could be more spendy than the oem pad? if used over their backing pad as reccomended?

 

[HHR]

I thought it was interesting that the pad under the hood of my Volvo is designed as a sound barrier, but I read that it is also designed to drop off the hood during a fire, and slump down onto the fire and help to suppress it. True for other brands? Not true?

True for all brands I have seen. The fasteners are made of plastic that melts in the case of a fire. They should melt even faster if the hood pad is saturated in diesel fuel.