Carbon fiber hood
#142
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So which would be optimal: 1) Cut a couple of "H" shapes into the hood with the cross-bar of the "H" closer to the nose of the car. Bend the shorter tab up above the line of the hood and bend the longer tab down into the engine bay. or 2) Cut slim rectangles transversely into the hood without cutting a half inch in the middle which would make the downward plane of one louver the upward plane of the next (I think this is what genesplicer did). I guess I'm wondering whether a big opening is better than a few little ones. It's probably not that big a deal, but I was wondering.
#148
So which would be optimal: 1) Cut a couple of "H" shapes into the hood with the cross-bar of the "H" closer to the nose of the car. Bend the shorter tab up above the line of the hood and bend the longer tab down into the engine bay. or 2) Cut slim rectangles transversely into the hood without cutting a half inch in the middle which would make the downward plane of one louver the upward plane of the next (I think this is what genesplicer did). I guess I'm wondering whether a big opening is better than a few little ones. It's probably not that big a deal, but I was wondering.
#150
Do you guys think if this mod is effective?
Hood holders: if the hood flies up, you’re going to have a bad time. | TheTurtleBuild
Hood holders: if the hood flies up, you’re going to have a bad time. | TheTurtleBuild
#152
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Total opening area on that hood is only ~50% of ideal. Placement of the vents is OK for the front two slots, not so great for the rear two - figure the rear two slots will only be marginally effective, reducing overall performance further below that 50%. That will also dump water on top of the valve cover when it rains.
Carbon Miata parts are nicely made though, good fit and finish.
-Ryan
#157
Not necessarily. The rear openings will see positive pressure, potentially negating any gains from the front two. TBH it sounds like you're rationalizing the poor vent configuration because it's pretty. OEM hoods are really light. Only lighter hood I've ever seen are teh two vacuum formed dry carbon skins I got from Lightyear. Anything clamshell, wet layup like this one tends to be about the same weight as OEM or usually heavier.
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#160
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OE vents are usually full of compromise, and it gets worse when they are grafted onto a car which has different airflow than the car they were intended for. The Ford GT500 vent in a Miata hood we tested? Our hood louvers doubled the performance over those. The Mini Cooper scoop in a Miata hood, same story.
We have an Evo coming in soon for venting improvements. Even the C7 Corvette - a car with some very good function-focused development behind it - we've improved the main hood vent by 30% on that car.
-Ryan
We have an Evo coming in soon for venting improvements. Even the C7 Corvette - a car with some very good function-focused development behind it - we've improved the main hood vent by 30% on that car.
-Ryan