I removed my hood liner last night in an attempt to lower hoat soak and underhood temps. As tested with my NASA ceritifed BBG temp gauge, my underhood temps are 15 degrees cooler at idle in traffic and about 5 degrees cooler at roll. Heatsoak doesn't seem to be as dramatic or last as long. All testing done in 90 degree heat with 65% humidity.

No real increase is engine noise except a slightly louder intake growl.

BTW, the hood liner weighs 2 lbs


Dave

 

What is the point in the liner then?

 

in cold weather you may wan't it on there

 

Purpose is probably noise suppression and maybe to protect the hood from engine heat(ie.. prevent heat related paint problems). Just a guess though. I doubt heat would really damage the hood.

 

I believe it would be noise suppression more than anything else. Also prevents you from cutting yourself on those sharp areas when the hood is open.

 

I would also think that protecting the paint on the hood from all that heat would be a considerable factor, too.

DW

 

has ne1 else done this?

 

As soon as i get my check for this ecu, ill effectively be trading it in for a hood-liner-less carbon fiber hood.

PAINT? WHAT PAINT!?!?!

 

I don't think it's there to shield heat. Having a black hood bake in the sun on a 90 degree produces for more heat than a hot engine at night. I believe the Nissan did this to reduce as much noise as possible. Since I've got a Y-pipe, intake, B-pipe, wider tires, and stiffer suspension, my car is much louder than stock and it's hard to tell the difference with and without the liner. The only way to prove this would be to get a stock Max and test it.

So far it works.


Dave

 

Zam has this done to his 95 as well. I think I might do it to. The liner scrapes against my Courtesy FSTB.

 

Alot of cars don't actually have the liner. Thank you for investigating this, Dave B.

 

also, most insulation products have a fire retardent in them. that might help keep your engine fire under control, when it blows up from using to much nitrous. ha , like on the fast and the furious.

 

I was told by the dealer when I purchased the car, that the hood liner was designed primarily in case of engine fires. The plastic studs that hold the liner in place are supposed to melt and the liner is to fall on the engine and smother the flames.

 

Actually the hood liner is there in case of FIRE. If the engine caught on fire, the hood liner will fall apart onto the engine and put out the fire in theory. That is what its actually for.

 

I agree with that theory. I would think its a heat shield for the hood itself. The engine should get all of the cooling it needs traveling at speed.

 

I guess all the Hondas are ****-outa-luck. LOL!

 

Good call. I think you're very right. I've got no real worries about a fire because I've got a fire extingushier in the trunk.


Dave

 

You have the idea correct sorta but not completely. When a fire happens, the plastic buttons that hold it on melt, dropping the liner on the engine. This smothers the fire and puts it out.

 

When my old Explorer lit on fire the Hood Liner came down and smuthered the flames.

 

Do you really think this is going to happen? If your engine is on fire, obviously it is burning gas, so I dont think this shield is going to put out the fire.

Personally, I am going to get a Fiberglass hood eventally (Not CF because CF cant be painted as easily, and weight diff is negligible), and if I had a fire on my engine it would melt it for sure.

 

Yes I remember that too when the dealer showed my features of the car. I was told the same when I test drove the other makes that I forgot which one.

 

LOL the paint already sucks, so what's it matter?