The insulation under my hood is really falling apart now and seems to get my hair caught in it.

What i want to know is:

if i remove it and do nothing - How much does it weigh and what will be affected?

If i remove it and spray a couple coats of truck-bed liner spray (the rubber-like spray that dampens sound and adds texture) and then a couple layers of a high temperature paint or temperature insulating paint, what would the pros and cons be of this?

My guess is removing it will maybe take 5lbs at most from the car. Sound from the engine will be more audible and the heat from the engine could possibly cause my hood paint or wax used to discolor or otherwise. If i sprayed it with a rubberized liner after giving a good coarse sanding and then a layer of heat resistant /ceramic spray paint, it would reduce noise levels once again, reduce heat transference to the hoods paint and generally just look better when the hood was lifted. Am i close?

 

I bought a replacement insulation pad from Fbodystore (around $40). I don't recall that it weighed more than a pound or two, so I don't think you'll save much weight. It's your call if you want to go with a liner-type spray, but it's also reasonably cheap and an easy swap to put in a stock replacement.

 

A lot of people don't know it, but the hood liner is actually a flame retardant. Replace it.

 

Take it off & obviously it won't do anything for you weight-wise & you won't see any damage to your paint, unless it is REALLY crappy paint.

I've pulled every one off every car I've ever had, & had zero bad things happen from it being gone.

 

while i was doing the under carpet area, i had enough of this stuff for under the hood. much cleaner, nicer, i think it looks great being metallic. its held up surprisingly well for under the hood, looks new.
http://www.lobucrod.com/

 

from what I have understood was the reason it was there was if there ever was and engine fire the plastic clips that hold it on would melt and the insulation would fall on the engine and choke the fire out. Other than that I can't see any other purpose for it I guess it's up to you.

 

It's primary purpose was for noise. That's it. It insulated the engine sound to meet noise concerns. The auto manufacturers still do this. My 2006 Silverado air intake tube isn't just a straight tube, but has side chambers to disrupt the airflow. That's why adding in a CAI makes the car seem louder.