The VIS invader hood has a large vent across the front. now if the engine bay gets air from underneath and it rushes up into the bay towards the top, wouldnt it continue thru the vent and out towars the back creating a good amount of downforce at higher speeds? this is what the hood looks like...

 

maybe at rediculously high speeds, or a vacuum yes, but i hardly see any downforce benefit unless you also have a front under diffuser

 

Im sure the functionality of tha tis to keep the engine bay alot cooler. I'd see a lot of benefit from the hood for someone who was running turbo

 

ahhhhhhh man!

 

Only if designed correctly. Most Honda's (besides NSX) and stock car based cars don't have the right structure for that sort of set up. The reason for the vent is to give an exit fo the parasitic drag used to help cool the car. Other alternatives would be cutting holes in the wheel well to allow the air to exit or to exit underneath the car like how Honda intended it. It's more benificial to put a front lip on the car un less you feel like strecthing the front end about 1ft.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RiceNmotioN &raquo;</TD></TR><TR><TD CLASS="quote"> Other alternatives would be cutting holes in the wheel well to allow the air to exit or to exit underneath the car like</TD></TR></TABLE>

This idea I like alot because to be honest I want to be as sleepr as possible, only reason I would consider compromising my sleeper look for this fugly hood is because I was expecting it to provide downforce giving me more top end stability. so putting holes in the wheel well would help? I know brake cooling would be enhanced.

 

I want one of these for my boosted hatchy. I would imagine it would keep the turbo much much cooler.

 

I remember reading about how the Top Secret Supra has vents on the hood for hot air to escape. Reason being, the hot air trapped in the engine bay would lift the frontend of the car; sort of like a hot air balloon effect, except without actually flying or anything. One must also keep in mind that the Top Secret Supra was designed to hit 200+ MPH.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">I want one of these for my boosted hatchy. I would imagine it would keep the turbo much much cooler. </TD></TR></TABLE>


it does keep the turbo a lot cooler...and from your manifold on back, it doesn't even get hot the only downfall is when it rains...it gets on your mani and turbo. just ceramic coat your mani and turbo and that should eliminate all worries about your turbo/mani cracking due to water.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shermanyang &raquo;</TD></TR><TR><TD CLASS="quote">


it does keep the turbo a lot cooler...and from your manifold on back, it doesn't even get hot the only downfall is when it rains...it gets on your mani and turbo. just ceramic coat your mani and turbo and that should eliminate all worries about your turbo/mani cracking due to water.</TD></TR></TABLE>

Yeah I was worried about that for a while, but I have an EK, so water comes in the front grille anyway. Any idea how detremental will a little rain hitting the turbo/mani? I have a heatshield on it already (the "stock" Greddy 14g shield) so what else would I need to help not tear my stuff up.

I KNOW putting cold water on a hot turbine can't be good for it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage &raquo;</TD></TR><TR><TD CLASS="quote">

This idea I like alot because to be honest I want to be as sleepr as possible</TD></TR></TABLE>

Just put a few washers on the bolts that hold your hod on. Same effect, and a more sleepr look. It just looks like your hood isnt bolted on right, but you get better engine cooling.

The best part is the price, $2 at the most if you buy fancy stainless steel washers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Briman2021 &raquo;</TD></TR><TR><TD CLASS="quote">

Just put a few washers on the bolts that hold your hod on. Same effect, and a more sleepr look. It just looks like your hood isnt bolted on right, but you get better engine cooling.

The best part is the price, $2 at the most if you buy fancy stainless steel washers.</TD></TR></TABLE>

Okay, me and my father were talking about this a while back and I ran into a definate problem with that idea. Since he's an old school rodder (had a 69 Camaro SS among other cars) he knows about cowl induction hoods.

The area where the cowl is, is a low pressure area, so it is a good place to have an intake, which would not be a good place to expect air to flow out of. Anybody else have any thoughts on this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">

Okay, me and my father were talking about this a while back and I ran into a definate problem with that idea. Since he's an old school rodder (had a 69 Camaro SS among other cars) he knows about cowl induction hoods.

The area where the cowl is, is a low pressure area, so it is a good place to have an intake, which would not be a good place to expect air to flow out of. Anybody else have any thoughts on this?</TD></TR></TABLE>

pretty sure the cowl is a high pressure area. but then again i'm no meteorologist.

a properly designed cowl is definitely not a good place to expect air to EXIT from, but definitely expect cool air to enter there.

sticking washers under the latches will allow a lot of hot air to escape. i seen lots of guys do it with great success.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the kid 86 &raquo;</TD></TR><TR><TD CLASS="quote">

pretty sure the cowl is a high pressure area. but then again i'm no meteorologist.

a properly designed cowl is definitely not a good place to expect air to EXIT from, but definitely expect cool air to enter there.

sticking washers under the latches will allow a lot of hot air to escape. i seen lots of guys do it with great success.</TD></TR></TABLE>

low pressure. i was researching that, and i forgot where i heard it, but im sure it's lower pressure.

 

hey ricey you and your dad take your cowl hoods and stick to redneck cars this thread was a question about downforce not cowl induction<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">

Okay, me and my father were talking about this a while back and I ran into a definate problem with that idea. Since he's an old school rodder (had a 69 Camaro SS among other cars) he knows about cowl induction hoods.

The area where the cowl is, is a low pressure area, so it is a good place to have an intake, which would not be a good place to expect air to flow out of. Anybody else have any thoughts on this?</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by brokespine &raquo;</TD></TR><TR><TD CLASS="quote">hey ricey you and your dad take your cowl hoods and stick to redneck cars this thread was a question about downforce not cowl induction </TD></TR></TABLE>

I hope you were joking.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by brokespine &raquo;</TD></TR><TR><TD CLASS="quote">hey ricey you and your dad take your cowl hoods and stick to redneck cars this thread was a question about downforce not cowl induction </TD></TR></TABLE>

Shut up. You arent contributing anything. His question was completely legitimate in this thread.

Oh, and I had that hood back in the day on my teg. I dont think the attention it drew was worth it

 

i really cant imagine it working for a down force theory, not the right kind of traveling air for down force. i think you would probably see it on some sort of race car like nascar if it were the case... dont worry , it still keeps the bay cool and most of you shouldnt be driving fast enough to create down force anyway...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage &raquo;</TD></TR><TR><TD CLASS="quote">

This idea I like alot because to be honest I want to be as sleepr as possible, only reason I would consider compromising my sleeper look for this fugly hood is because I was expecting it to provide downforce giving me more top end stability. so putting holes in the wheel well would help? I know brake cooling would be enhanced.</TD></TR></TABLE>

the hood would give you greater top end stability, but not because of downforce. the vent will release the pressure that builds up in the engine compartment at higher speeds, along with excess heat created by a turbo. cutting holes in the wheel wells would probably enhance brake cooling very slightly and release a small ammount of pressure, but i doubt it would vent hot air very well since heat rises. the optimum position for vents to release heat is on the hood. honestly that hood isn't bad at all.

i would much rather own a vented hood than do that ugly *** washer trick, which probably doesnt even work. i'd like to see a temperature comparison with that washer trick vs. stock hood.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by not you &raquo;</TD></TR><TR><TD CLASS="quote">i really cant imagine it working for a down force theory, not the right kind of traveling air for down force. i think you would probably see it on some sort of race car like nascar if it were the case... dont worry , it still keeps the bay cool and most of you shouldnt be driving fast enough to create down force anyway...

</TD></TR></TABLE>

functional downforce begins to show at around 30mph.

downforce on the front wheels isn't needed in a FF car. for one thing, FF car's are already front heavy. all you need is a front lip spoiler to redirect air from underneath the car. i'd concentrate more on avoiding front end lift and creating rear end downforce.

 

does anybody have a pics of a hatch with the washers being used to cool the bay better it seems like a great idea i just would like to know how it looks like that. thanks in advance

 

wouldnt the down force from the front be negated by the down force created by the rear spoiler?

 

hey Ricey... talking about you and your Dad old school hood, what about get your stock hood and punch in few louver line, like the old school hot rod...

 

I do not know about the down force theory, but my buddy put this hood (VIS Grade A CF) on his 95 coupe and loves it because it keeps his turbo and manifold a lot cooler.

He has a custom heat shield as well that totally protects the manifold and turbo from getting wet when it rains as well.

 

HAHAHHAHHAHAHHAHA


ohhh it hurts.. i luagh so hard