skyavonee

To those that have removed the hood liner - Did you notice any increase in engine noise from inside the cabin?

This is apparently one of its intended effects, but I haven't found any comments that state directly whether or not a change in cabin noise was noticeable. Thanks.

P.S. - I'm not at all interested in underhood bling, so don't bother posting pictures of your sweet underhood paint job... I'm just curious about the noise issue.

ZeeOSix

Why remove it? ... the underside of the hood is probably pretty ugly without it.

skyavonee

If it doesn't serve a useful purpose, I think I'd prefer the gritty race car look of a bare underhood. Different strokes for different folks.


Plus, it would remove a couple pounds from the front of the car. And, my air bridge currently rubs against it.

striper

It actually weighs practically nothing.

HotrodZ06

Last month I removed the hood liner on my Z06, filled all the holes and seams, and re-finished the underside of the stock hood in polyurethane satin black. I really do not notice any increase in engine noise inside the cabin when driving. As mentioned above, the hood liner is very lightweight but it was starting to look worn and the Halltech power duct did rub on the liner. Without the liner, the power duct has about 1/8" clearance from the underside of the hood, which was one of the main reasons I removed it.

Rod

3sACROWD

The hood liner has two functions. 1) Insulate the hood from the engine heat in order to protect the paint. 2) Noise reduction.

AU N EGL

Just like taking the carpet and insulation out of the cabin ( Race cars ) there is more noise.

skyavonee

Based on my limited research, #1 is complete baloney. There are a LOT of guys running without hood liners (on both the stock hood and aftermarket ones) and I haven't heard of anyone ever reporting paint damage. Fire retardant is apparently the other purpose of the liner besides noise reduction.

skyavonee

It's easy to make generalizations like this, but I'm looking for direct experience from users who have actually removed the liner.


Anyone else besides HotrodZ06 have an opinion?

hotwheels57

Fire retardant is "complete baloney". Maybe back when cars had carburetors and manual timing abilities and frequent engine backfires. Then the insulator protected the hood from fire damage to a limited degree. In today's cars it about reducing engine compartment noises into the cabin so people can talk on their cellphones, text w/o interruption and listen to their megawatt stereos.

When was the last time you heard of an engine bay fire with fuel injection and computer timing?

But if you don't like it for whatever reason, take it off.

Everyone will have a different sense of whether it's more noisy. Report back with your opinion.

Scooter70

Many new cars don't include a hood blanket. Sometimes we even delete them as a cost savings a year or two after a vehicle is released. It's purpose is purely NVH.

3sACROWD

If you seach a little more, you can find opinions going both ways. I for one have had two cars over the years that the paint heat checked several years after the liner was removed. The paint checked directly above the exhaust manifolds. Doesn't matter to me if you believe it or not. If the car has one installed when I buy it, I'll keep it in place. If it is there just for noise reduction; so be it. Do whatever make you happy.

vettemanZ06eb

I took mine off 2 years ago because it was fraying on outside edge did not notice a big diff in sound and no paint issues at all.

skyavonee

Thanks all for the responses. I'll probably remove it one of these next couple weekends, and I'll be sure to update this thread with my reactions.

Evil Oil Apologist

All the drama.

The engine bay is rather warm environment (non-debatable factoid). Probably a purpose for the liner that is marginal, but done for a reason.

Think I'll beta test taking the hood off. Probably ruin the airflow and dynamics, but the enginee will be cooler. Just say'n.

skyavonee

Well I took it off yesterday and have since taken a round trip drive to my office for work. There might be a slight noise increase at idle but I can't say for sure. There's no noticeable increase while actually driving, though, at least as far as I can discern.

arkus

leave it on