Did a few DIY'ers to my kouki..

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
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spooled240
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I did the HD lip on the kouki, and propped the back of my hood up for ventilation. The total was less than 20 bucks

I mainly did these mods for the functionality but they ended up looking pretty damn good IMO.

before

after:

the lip is still pretty flimsy, but I will get a thin steel rod and push it through that small opening at the bottom (sorry if that didn't sound right lol) and I'll see how that works..


Nacho_240
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It definitely makes it look more aggressive, but did you have to prop the hood up so high. Your bay will catch a lot of dust.

EDIT: I put my hood back down for that reason. That pic in my sig is pretty old.

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spooled240
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yeah I tripped out when i first saw how high it was then I lowered it half an inch and it's as low as it gets with the bolts I got. I don't really care for dust, my engine bay already gets dusty as hell, I mainly did it to cool my brake m/c cuz the turbo is pretty close to it.

tonynalli
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Honestly that looks horrible, and extremely ricey.

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assassin7420
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tonynalli wrote:Honestly that looks horrible, and extremely ricey.
+1 for the hood. The lip is alright...

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tramp_drift240
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i guess it kinda makes sense for the brake MC/turbo cooling...

but i think propped hood hinges are better suited for s13s.

s14s are supposed to be more clean flowing without abrupt jagged edges.

lips aiight though.

coreansurfer
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tonynalli wrote:Honestly that looks horrible, and extremely ricey.
+1

you made a potentially good looking car look like complete ***.

you fail.

and how the hell is any of that functional?

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assassin7420
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coreansurfer wrote:
+1

you made a potentially good looking car look like complete ***.

you fail.

and how the hell is any of that functional?
Shimming the hood is actually very functional. It just happens to look like total crap on the S14.

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tramp_drift240
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assassin7420 wrote: It just happens to look like total crap on the S14.
the point i was trying to make with:
tramp_drift240 wrote:but i think propped hood hinges are better suited for s13s.
coreansurfer wrote:
+1

you made a potentially good looking car look like complete ***.

you fail.

and how the hell is any of that functional?
you sound very dumb, and a little too harsh.

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DrFtKiNg180sx
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tonynalli wrote:Honestly that looks horrible, and extremely ricey.
says the guy with the 4x4. take that thing off any sweet jumps?

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assassin7420
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DrFtKiNg180sx wrote:
says the guy with the 4x4. take that thing off any sweet jumps?
Not everyone wants a "Hella tight megga sikk pot hole eating drift car".

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TrueVillan
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Hey Spooled240 what is the brand of the home depot lip???? I been looking for something like it at my local one and cant seem to find it.

IMHO Koukis look best with the OEM lip. A straight through lip looks better on the Zenki. But since you like it, thats all that matters.

KLYPH
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I need to do that hood modification. Looks good =)

got chub
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IMO i don't like either but then again it not my car and i don't have to drive it i would not have put rivets in my JDM bumper

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Morph
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coreansurfer wrote:
+1

you made a potentially good looking car look like complete ***.

you fail.

and how the hell is any of that functional?
Is it just me or has the douche level risen a lot lately?

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ca18detgabby
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well it cost you 20 bucks.......... it looks like about a 20 dollar job.

think I would have left well enough alone, but w/e its up to you.

PS I dont think the hood prop thing would look even close to go on ANYTHING. a real cowl is one thing, but that looks like you just smashed your front end into something.

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RCA
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WOW you guys can be mean!From what I read time and time again is that those "proped" hood do improve under hood temps but the rewards heavily out weight the work/matanence.

Plus better pictures of the front of the car would make for a better judgement of this lip, and ahh daylight is your friend

apollas
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rcabrita wrote:WOW you guys can be mean!From what I read time and time again is that those "proped" hood do improve under hood temps
nah not really, its not gonna do much but to show that you lifted your hood along with all the other 100000 honda guys out there. for the amount of function vs cop magnet, def not worth it. and the lip, is just cosmetics.this is a definite case of looks>function

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dickie
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ca18detgabby wrote:PS I dont think the hood prop thing would look even close to good on ANYTHING. a real cowl is one thing, but that looks like you just smashed your front end into something.

ken240sx
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I'm still confused about why people prop their hoods and how it works....There's high pressure airflow going over the car, and low pressure under. Air likes to travel from high to low pressure, not low to high. So how can air be brought through the lower part of the bumper across the engine bay and flow out the back of the hood? Would this not mean that low pressure air would be going to high pressure air?? Is this even possible? Someone fill me in on how air would flow low to high pressure.....

sommmatt
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ken240sx wrote:I'm still confused about why people prop their hoods and how it works....There's high pressure airflow going over the car, and low pressure under. Air likes to travel from high to low pressure, not low to high. So how can air be brought through the lower part of the bumper across the engine bay and flow out the back of the hood? Would this not mean that low pressure air would be going to high pressure air?? Is this even possible? Someone fill me in on how air would flow low to high pressure.....
Science... ricer's biggest foe yet!

mrmarbles
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You missed your license plate in one of your pics.

ken240sx
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just wondering if anyone has come up with how air could go from low to high pressure yet? I'm still baffled.

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Clawhammer
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ken240sx wrote:I'm still confused about why people prop their hoods and how it works....There's high pressure airflow going over the car, and low pressure under. Air likes to travel from high to low pressure, not low to high. So how can air be brought through the lower part of the bumper across the engine bay and flow out the back of the hood? Would this not mean that low pressure air would be going to high pressure air?? Is this even possible? Someone fill me in on how air would flow low to high pressure.....
About a year ago there was a huge discussion on this either here or on zilvia. In the end it seems like propping your hood like that might help a little when you're sitting at a traffic light. That functional "mod" is not helping you at all.

And why would you staple a $10 piece of molding to JDM bumper?

ken240sx
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well that makes sense, if you're gong under 10mph or stopped that it would help with cooling the engine bay, because heat rises and can escape much easier through a bigger opening like having the hood propped up in the back. But when moving the pressure is much higher on top of the car than under it and it would seem that air couldn't fight physics and go from low to high pressure.

koukicody
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Clawhammer wrote:And why would you staple a $10 piece of molding to JDM bumper?
yeah, thats what bummed me out. Drilling holes in that nicley painted JDM front bumper

you need this pronto!

http://cgi.ebay.com/ebaymotors...photo

They're even close enough that you could pick it up.

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edgartheace
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The reason the hood prop works is the same reasons that planes fly, as air meets the nose of your car it has two choices of where togo, up over your car or under. Since the bottom of you car is realativly flat the air moves relativly undisturbed, the air that goes over the car has a longer distance to travel since it has to travel across the hood and over the cabin before it meets back up with the air that travelled across the bottom. In order to do this the air has to travel faster causing a drop in air pressure, couple that with the fact that as air enters your engine bay it has few places to leave, causing the pressure in your engine bay to rise slightly, since air will take the path of least resistance as it exits it will exit out the top where the hood is proped open and air pressure is reduced. While at idle the proping of the hood helps due to the fact the hot air rises since the hot air would normaly sit at the top of bay when the hood is closed it is allowed to escape once it is proped up



http://www.boscobel.k12.wi.us/...t.htm

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diggles240
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ken240sx wrote:well that makes sense, if you're gong under 10mph or stopped that it would help with cooling the engine bay, because heat rises and can escape much easier through a bigger opening like having the hood propped up in the back. But when moving the pressure is much higher on top of the car than under it and it would seem that air couldn't fight physics and go from low to high pressure.
a cowl-induction intake system orginated during the muscle car era and was combined with an enclosed plenum from the hinge edge of the hood that included the air cleaner and increased colder/more dense air flow to the engine, thus increasing horsepower. i do not understand the venting concept, since, as ken stated above, pressure is higher above the hood than within the engine bay.

KLYPH
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How about the haters try propping the hood up and go for a ride. put your hand out the window and if you dont feel hot air coming out from under your hood(which you will) then come in here and talk ****. GTFO and STFUDay light pics pleaseI think the lip was a bad idea but w/e, its better than nothing

ken240sx
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As far as I'm aware, cowl induction works off the fact that the air will start to go downwards and swirl when you have a higher hood and a drop off before the windshield. Same effect happens after the air goes over your car and starts to swirl and meet with the lower pressure near your rear bumper. That drop-off is what I understand to be the creator of the airflow into the filter in cowl induction due to the rolling of the air caught between the back of the higher hood and the windshield. Now just propping up the hood for better shouldn't cause the air in the engine bay to exit there. The top of the car will still have much higher pressure than under the car. There shouldn't be a lot of airflow into the engine bay at all considering the air is going to take the path of least resistance as you said yourself. It's going to either go over or under the car. There is a radiator and condenser and possibly an intercooler disturbing airflow into the engine bay, along with a bumper that deflects most of the air to go around and over the vehicle. Air that goes under the vehicle will not raise up into the engine bay unless redirected by something. since the air will not really be moving much in the engine bay it should have a decently low pressure should it not?


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