Raising the back of the hood OR removing the rubber seal under the back of the hood will probably reduce cooling efficiency through the radiator, since the base of the winshield is a HIGH PRESSURE ZONE. Air will most likely flow IN through the gap, which will reduce flow through the radialtor. It would be great for heat soak in stop and go traffic, but would suck big harry balls on a track.

 

im not even sure i took a pic of the car with the hood spacers on it.

right now i have a silver oem hood with the vent cuts. gonna bring it to a body shop and get it painted.

 

Why not just take off your hood instead...probably gain like 500hp

 

gernby has it right. BTW, taking off the heat/sound insulating pad under the hood helps a little.

 

Not saying I approve, but spacing up the back of the hood doesn't only give a gap at the back of the hood (high pressure zone), it gives openings along the sides of the hoods (low pressure zones, particularly towards the front of the car). Also, the high pressure region at the base of the windshield/back of the hood will stil be lower pressure than the air inlet at the front of the car feeding the radiator. Not saying that it for sure would increase airflow through the radiator and engine compartment, but I wouldn't be surprised if it did.

Regarding downforce, some guys did a TON of configurations on a 240Z in a wind tunnel, and the mod that had the most beneficial effect on reducing front end lift was when the hood release unintentionally released at the start of the run (hood opens backward on the 240, fortunately).

Not that a 240z's aero is necessarily similar to an S2000's. For one thing the back of the hood is maybe 4-6" in front of the base of the windshield.

 

That pad is a fire blanket. Removing it might not be a good tradeoff

 

i had those on my turboed Miata.
not a slick looks indeed.
every traffic light stop somebody told "man, your hood is open".

but instead of paiyng 500$ for vented hood (and paying at least 700$ more for everseas shipping and customs) or cutting stock one to pieces - 20$ for risers incl shipping did amazing job for lowering engine compartment temperature.

 

We have that on our car?

I know my old civic had one, but I don't recall my S every having one...

 

it did at some point. All but the CR's

 

hood off, stickers on, wing as high as it will go...

who wants to race?