Hood Insulation Experiences
 

The insulation under the hood is sagging badly, and I am wondering what approaches other people have taken to fix it.

First, should I just get some adhesive and stick it back on? Second, replace with a new piece? or buy some sound and heat insulation from JC Whitney or others and replace the original material?

I am leaning towards replacing it with some aftermarket heat shield. Seems like it may do a better job than what is on there.

good question as mine is starting as well. is it a good idea to just remove it? or will it bake the paint on the hood?

It's a fire blanket. There is no harm done in removing it if you want.

discos catch fire much? lol

i only ask because in my xr4ti the hood insulation was a known fire hazzard as it would fall onto the turbo. lol

I have always ripped it out and put it in the trash.

Catching fire is the least of your worries with the Disco.....if it does catch fire it is just paying homage to the Rover Gods and the Thor Motor.

I thought that blanket was to keep paint from baking off from below. if it doesn't do that, I will trash mine too..

Some good responses here. I will get it out of there.

Is it loud not having it there?

This is a good topic. I'm guessing it wouldn't hurt to replace it with a different type of heat shield.

I'm looking for some free time to replace the windshield wash sprayers on the hood. If I could tear out the insulation, that would probably help.

Didn't think of the noise aspect. Damn fan is loud enough. I'm wondering also if getting rid of it will help lower under hood temps at all. Mine lays on the plenum.

I did not loose any paint

I did not notice any noise difference

added to the rover do list.

Cmon guys, do you think Rover or any other auto manufacturer would spend the money on such a thing if it didn't serve a purpose? The bean counters would have tossed that thing a long time ago.

Every modern vehicle has the insulation under the hood. It serves two important (debatable) purposes, each can decide just how important they are:

a) injector tick -- you'll notice this insulation started appearing as fuel injection became commonplace. Many injectors, especially high-impedance "saturated" type injectors make loud clicks that are quite audible, and in some cases sound like dry lifters. This is the most distracting noise that manufacturers try to hide-- other engine noise is quiet in comparison.

[i.e sound insulation]

b) heat insulation - Underhood temps are far higher in modern vehicles with smaller engine bays, higher coolant temps for emissions. Sure, the engine heat won't peel paint, I think that's pretty obvious. But go park your rover in the southern Arizona sunshine after the engine got good and hot, shut it off and let it have a nice long heat soak. You might not notice anything initially, but try that day in and day out, and let me know how your hood paint holds up. It's simply insurance against the worst.

The "fire blanket" idea has some merit, but it's not the primary reason they fit these. There's no automobile safety standard in effect that says you have to have this-- some materials used in automobile manufacture have to resist flame / temperatures, but that's about it.

Replaced the hood liner today. Used Bonded Logic Insulation and Aluminum Tape, Permatex Heavy Duty Adhesive.

I put it on, cut it out, and got the clips in before spraying. Worked well, but you really have to push it into place. Use books or something heavy to hold it there. Once the adhesive is on she is sticking in place. I will keep pressure on it over night and reinstall tomorrow.Put the aluminum tape around any insulation that was showing.

If there is a sound benefit from this I will know it. It is much thicker and substantial than the OEM material. Hopefully a little quieter, we will see. only negative I can think of is the ice may not melt off my hood in winter.

Tell us how the noise is when you get her all finished. My brother has a 100' roll of dynamat sitting in the garage he'd let me use. I'd like to mask the sound of my engine knocks. :)

Come on dane... The knocks let you know it's running! :0

My ADD got the best of me, and we have company staying the night so hood could not rest on the dining room table all night. Reinstalled, and took her for a drive.

Both my wife and I noticed how quiet it seemed. Sounded like a "luxury vehicle" she said. Imagine that. You can hear the music better and play it a little softer.

Did make a difference, ran the same engine temps as usual. So, in short, glad I did it, and every time I open my hood it will be nice and shiny.

Lets just hope the adhesive you used will hold up to the heat from the engine.

So far so good. The adhesive is high heat, and listed engine bay as an application so it better hold up!

Denso head unit
 

Hello,

Does it work with the Denso head unit?

Regards

I can find a direct replacement made for a RRC but not anything for a Disco - the mice got to my D1 hood pad, so I did a long internet search and found a good alternative replacement.

The Mercedes Hood Insulation Pad W116 is a very close size fit for the D1 - I just took my old D1 pad off and patterned the holes where they should go and used new clips and it has been great for a couple of years. The mice do not like it as it is foam with no fiber insulation they can use for a home.

I am not sure if the D1 and D2 pads are the same ?

Mercedes Hood Insulation Pad New W116 | eBay

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