Wow, great idea. This doesn't have any negative effects does it?
Any other free mods to reduce under-hood temperatures?

 

I have never heard of this before... But there has to be a reason the insulation is there... I would be interested in hearing more about this.

 

There is more noise without the insulation cover, but if you take it off carefully, you can always reinstall it if you don't like the change. Personally I like being able to hear the motor and SC better.

 

As would I. What I meant by negative effects would be something like the hood fading. How does this allow more air in anyway?

 

Yea... Wouldn't this warp the hood because so much heat?

 

The paint will crack/fade a lot faster without that insulation. I've had many friends tell me I'm wrong, but guess what happens a few years down the road when my hood paint is still looking perfect

 

I haven't had mine removed long enough to be sure, but so far the hood doesn't get any warmer than it does when the car is parked in the sun on a summer day. I expect more heat in the summer, and that can't be good for the paint. Never seen a hood warp from lack of insulation, but I guess it might be possible.

I've had the insulation removed from the Miata for 16 years and the paint on the hood looks the same as the rest of the painted metal (but the plastic bumpers are more faded). The S2000 probably generates a lot more heat, so long term paint issues are an unknown at this point.

 

Yeah, it seems like sunlight would do more to fading paint than heat from underneath. Again, how does removing the insulator allow more air into the engine bay.

 

[QUOTE=Jakup,Feb 1 2006, 09:36 PM]Yeah, it seems like sunlight would do more to fading paint than heat from underneath.

 

That would be me; it certainly does allow for air to flow more under the hood, if you have taken your cover out then you would see why.

The OEM insulation sheet is mainly a 2-3mm sheet with 24mm blocks of insulation that fill the inserts in the bonnet. Remove the insulation you now have that 2-3mm gap all over the engine bay plus the 25mm inserts of space in each of the sections of the bonnet...

I think its fair to say this is spare air space

As to bonnet heat and cracking the heat that is generated is no where near enough to cause cracking. It gets warm but that again is not a bad thing as its taking the heat away , by removing the under insulation you are allowing the air to pass out of the bay rather than become a huge heated pad of insulation which is what it does from stock.

So you could argue that in hotter environments this is only a good thing as the stock insulation keeps the heat in and its sitting over the engine

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