hood spacers?

ok I'm guessing you would call them hood spacers.. can you put spacers where the hood connects(by front window) to leave a gap for heat to be released? someone told me that you can on most cars but not an rx-7... something about they connected them different or something... I don't know I was just wondering if they knew what they were talking about

yeah theres a company that makes them but i dont remember what they are called.

just try with washers and some kind of blanket so you dont fuck your paint

Just so you know the base of the windsheild is a high pressure area, air will not go out the newly made "cowl induction" scoop unless the car isn't moving.

Just so you know the base of the windsheild is a high pressure area, air will not go out the newly made "cowl induction" scoop unless the car isn't moving.

you are partially correct in respect to the base of the winsheild being a high pressure area. however, if the entire width of the hood is elevated air from the gap under the hood will be drawn out like a vaccum because of the air coming across the top of the hood, then hitting the windsheild.


if the gap was more narrow, and taller than the rest of the hood (say in a cowl induction hood from a 70-72 Chevelle SS) then the increased air pressure would have a tendency to flow backwards.... especially since these cowl hoods were sealed and did not have air from the rest of the engine bay around it... and you had 454 C.I.C sucking this air towards the cars boat anchor.

so a half inch to inch space would release heat?

and do I need to buy from some company or can I just use washers?

No, this has been documented many times on SF because this is an ancient SOGI mod (spacing the hood and removing the rubber seal). The base of the windsheild is high pressure, all the way across, the width of the vent will has little effect on how air will flow around it, only how much air it will flow. If you want to vent air out then cut a reverse vent into the hood, not opening a hole in a high pressure area.

isn't the whole hood a high pressure are too then?

Most all of the hood is + pressure of coarse, since it slopes upward but it's highest at the front (by the bumper) and back (by the windsheild) of the hood. Just incase anybody still wants to argue for some reason, here are the results from the man himself, Shawndude...
http://www.supraforums.com/forum/showthread.php?threadid=128226&perpage=25&highlight=hood%20space&pagenumber=3
On top of the negative effects to aero and cooling you'll be purposly making your car look like it was wrecked, jacking the back of the hood up 1/2" above the fenders. Looks aren't the most important thing to me but you have to take them into account :p :biggrin:

I swear i've seen this mod on a jdm FC.

I've seen it on a few... someone just told me it was more complicated on a 7 than other cars because of the way the hood connected or somethign and I was totally confused as to what the difference was

I doubt it would mess up the aero that much, and I don't plan on racing at 140hp either so I'm not that worried... I'm more worried about my engine staying cool so it lasts longer

Two pieces of 1/8th inch thick aluminum about three inches by one and a half inch. Drill four holes spaced to match the bolts on the hood. Two bolts go through the top two holes and attach to the hood. The other two holes attach to the hood hinge. You will need two new bolts, washers and nuts. The whole thing mounts at an angle, this is what makes it different than most cars. The distance between the top and bottom holes will control how much rise there is to the back of the hood.
I have seen them for sale on E-Bay from a company in Japan. If I remember they wanted about thirty dollars plus shipping. You can make your own for five. Just make certain you use thich enough aluminum to hold the hood secure in case of a wreck.
Try it. If you don't like the results you can always take them off. You could try thin plywood for a mock up.
It really could not be easier.