Mschneid

Is the pad under the hood for sound deadening or paint protection from the heat?

I'm thinking of a "vented" hood, should I put this back on after the install? I'm not worried about sound but I want to make sure the paint is protected and I want lowest under hood temperature. Is there anything else I should do to lower under hood temps?

Sierra141

Mine didn't come with a blanket, and its fine I live in the southwest desert and it gets hot over here!
No hood paint damage at all. I added the daystar hood vents and they work well.
Here's a picture

ade

Put mine back in after venting, thought it looked better. Pictures on build thread if you want to see.

Waldo_88

I'm not sure, but I know that the TJ's didn't come with it. I haven't seen any paint issues on TJ hoods caused by heat

jstikel3

Took mine off when I installed the Poison Spyder hood louvre and haven't had any issues. Save yourself some $$ and consider adding that verses replacing the whole hood. I can see the heat venting out at stop lights and on the trail.

Waldo_88

I'm not meaning to hijack.... But a free option to help with the heat in the engine bay is to remove the inner fender liner. Yea, it keeps some mud out of there if you decide to play in the mud, but its free and it helps

Mschneid

Let me see pics of vents that you have done. I'm sure it will be cheaper plus the body shop wants $400-$500 to paint so $1,100 is too much just for a 14% temp drop.

Tooadvanced

Sound deadening is what it's for. Lower models don't have it

GJeep

It's for sound damping. Try parking (warm engine) for a few hrs under direct sun, in real hot weather, then touch the hood... with the pad, you can still fry on it. The paint stays OK.

If you want true hot air venting, go for an efficient cooling hood rather than for advertising blah-blah.
The vents should be located near the firewall, and not forward.

ronjenx

The thing wrong with vents near the back of the hood is when on the road, there is a high pressure area in front of the windshield. The high pressure will make air go into the engine bay, causing less air to go through the radiator.

Removing the fender liners will force air from the wheel wells into the engine bay when driving on the road, also diminishing the amount of air through the radiator.

The best thing you can do to improve under-hood cooling is increase the air flow through the grill.
See this thread: https://www.jk-forum.com/forums/modi...trofit-235132/

All of my under-hood temps on-road and off-road are way down from where they were before the addition of the mechanical fan.