Addicted to anything HONDA
HOOD TILT
First of all, one may ask;
Q: "what is the purpose of this? and has it been proven? "
i'll tell you why first.
A: There's been a lot of debate over the actual function of this mod...One argument is that it keeps the temps in your engine bay down, because people think the hot air flows out through the gap. In actuality there is cool air flowing in. Think about it this way...if you have a sunroof in your CIVIC, and you pop it up without sliding it back, what happens? You get a small amount of outside air coming in through the crack, kinda like a vacuum.
This is where the mod becomes a little more functional...for those with a B or D series, and ITB's. The vacuum created by the hood being propped and the suction of the throttle bodies means greater airflow straight into the engine. I've heard of as much of a 8-10whp gain from doing this and tuning accordingly, but I've still seen no dyno charts to prove it. Theoretically it makes sense, but whether or not the gains are noticable is debatable.
It also becomes somewhat functional for those lucky enough to have K-swaps, where the header sits right up against the firewall. The whole rear section of the engine bay tends to get much hotter, and the cool air being sucked in may lower that temperature, and the air then flows out the bottom of the engine bay, kinda like an even bigger vacuum.
These are the only 2 'real' scenarios where I've seen it functional for our honda's. As for most of the people that do this, about 95% of them OVER DO IT & don't know what it's for and they just think its a m4d tYte JDM thing....where in actuality, it just makes their cars look that much more ridiculous, and the mod originally began in the american muscle car era.
Now, for the details:
-Go to Home Depot, Lowe's, or any local hardware store (I went to AutoZone)
-buy some 10mm washers and new, longer bolts with the proper thread pitch and size
-take the hood and hinges off
-stack up the washers (UNDER THE FOOT/FEET OF THE HINGES) and put in the longer bolts...voila, youre done....you could bring the tools with you and do it in the parking lot...lol.
It takes about 10 mins (took me longer, i have OCD and went crazy about how aligned and perfect it looked)
tip: BUY MORE WASHERS THEN YOU REALLY THINK YOU"LL NEED... 'cause you will need them! i had to go back to get some more because it did not pop it up enough. 2 packs (a total of 32 washers) barely lifted it enough to notice.
If any of you get ITB's or go K-series, do a before and after dyno of the hood originally and then propped up, so we can see if there really is a noticable difference. I think it would work more when the car is in motion cuz the low pressure under the hood and highpressure above the hood and windshield will push cold air in through the gap so on the dyno the results wont be as significant. but I can't think of any other way to try and measure a difference....I guess we'll be debating over this forever then, huh?
Q: "what is the purpose of this? and has it been proven? "
i'll tell you why first.
A: There's been a lot of debate over the actual function of this mod...One argument is that it keeps the temps in your engine bay down, because people think the hot air flows out through the gap. In actuality there is cool air flowing in. Think about it this way...if you have a sunroof in your CIVIC, and you pop it up without sliding it back, what happens? You get a small amount of outside air coming in through the crack, kinda like a vacuum.
This is where the mod becomes a little more functional...for those with a B or D series, and ITB's. The vacuum created by the hood being propped and the suction of the throttle bodies means greater airflow straight into the engine. I've heard of as much of a 8-10whp gain from doing this and tuning accordingly, but I've still seen no dyno charts to prove it. Theoretically it makes sense, but whether or not the gains are noticable is debatable.
It also becomes somewhat functional for those lucky enough to have K-swaps, where the header sits right up against the firewall. The whole rear section of the engine bay tends to get much hotter, and the cool air being sucked in may lower that temperature, and the air then flows out the bottom of the engine bay, kinda like an even bigger vacuum.
These are the only 2 'real' scenarios where I've seen it functional for our honda's. As for most of the people that do this, about 95% of them OVER DO IT & don't know what it's for and they just think its a m4d tYte JDM thing....where in actuality, it just makes their cars look that much more ridiculous, and the mod originally began in the american muscle car era.
Now, for the details:
-Go to Home Depot, Lowe's, or any local hardware store (I went to AutoZone)
-buy some 10mm washers and new, longer bolts with the proper thread pitch and size
-take the hood and hinges off
-stack up the washers (UNDER THE FOOT/FEET OF THE HINGES) and put in the longer bolts...voila, youre done....you could bring the tools with you and do it in the parking lot...lol.
It takes about 10 mins (took me longer, i have OCD and went crazy about how aligned and perfect it looked)
tip: BUY MORE WASHERS THEN YOU REALLY THINK YOU"LL NEED... 'cause you will need them! i had to go back to get some more because it did not pop it up enough. 2 packs (a total of 32 washers) barely lifted it enough to notice.
If any of you get ITB's or go K-series, do a before and after dyno of the hood originally and then propped up, so we can see if there really is a noticable difference. I think it would work more when the car is in motion cuz the low pressure under the hood and highpressure above the hood and windshield will push cold air in through the gap so on the dyno the results wont be as significant. but I can't think of any other way to try and measure a difference....I guess we'll be debating over this forever then, huh?
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Replies to This Discussion
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Permalink Reply by Acid X on -
I've actually heard this is bad for your engine bay. What happens is the air flows up over the hood and hits the windshield, going up the windshield and over the car.
When you raise the hood it causes an empty space between the hoot and the windshield, almost like a void. Sure, you open the hood and expect air to flow through, but what actually happens is air gets trapped in the space and whirls around in circles before slowly flowing up the windshield.. It causes hot air to stay in the engine bay every more. The engine bay is designed to flow air out certain areas, and if you mess up that flow then hot air will actually get trapped in the engine bay.
*Maybe* if you have ITB's that are angled towards the crack it can cause a vacuum to get slightly cooler air into them, but i highly doubt it will make much of an effect on performance.. If anything, it will make your car more prone to overheating.
Not to mention it totally messes up the body lines and doesnt look very good. lol
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Permalink Reply by <B18> Beast On The Street on -
it really dont help out cooling engine bay temps at all..... the only real reason people do it is because the hood hitting the motor when they shut it.... mainly only on the b-series.... my buddy had to do it to his coupe....
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