Jaygnar

I've noticed that there are a lot of people on the boards that have made cold air intakes for their gen 2 legend sedans. I have already put a K&N filter in the stock airbox and to be quite honest, I did'nt realy notice a difference where performance is concerned. I have no problem with the fact that I upgraded the filter however, due to the fact that my engine is now getting more air that is cleaner than it was with a paper filter.
Now for my question.
I was wondering how many of the 2nd generation owners here who have fabricated a cold air intake noticed a difference that was worth the time and money they invested. I'm thinking that I could build a C A I out of some basic autozone crap like a 4 inch elbow and a 30 dollar filter for like next to nothing.
I know some people spend a crapload like over $100 on their C A I systems but I'm interested in building something dirt cheap if at all. I'm not saying that I expect to gain anything substantial in HP but if there isn't a "feelable" difference, then I just didn't want to waste time and money that I could spend on other mods and repairs on something that wasn't worth it.
I am interested in opinions. I don't need hard dyno results but I do want honesty. The goal for my car is to improve the overall charachteristics (sp?) of the car. I'm not trying to make the car into something it's not, but I want to improve what it already is.
And to be honest, I just like playing with my car.
Also, any advice that will help me build this thing if I decide to is welcome.
Remember, Cheap is the important part, but It's gotta be functional as well.
THanx in advance.
J.

 

GreekPower

its 60 bucks for piping and a k&n varies in cost... so just do it

93LegendSedan

I say yes go for it. I have one and I think you will be very happy with it.

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acc-unit

yes, it's worth it if done right

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1990 Legend sedan - RIP
1995 6 spd coupe

Jaygnar

I was thinking about this project and I was wondering if I were to connect a 12 volt fan to the side of the air box so that the fan would help to actively draw air into the airbox and thereby supply colder fresh air into the box, where the air could then be picked up by the intake, would there be benefits?
I'm not talking any sort of ghetto forced induction. Just thinking that it would be a way to pull more cooler air through the stock air intake openings in the fender and thereby supply the engine with colder air.
My concern is that if this is done, the fan would have to be blowing into the airbox so that the fan and the intake are not working against eachother. But if I were to create a bypass hole in the airbox so that any sort of positive pressure in the airbox was minimized I think that much cooler air could be drawn in. I'm gonna prototype one of these systems and see what works out.
If all else fails the fan can simply be disconnected and the efficiency of the airbox will return to normal.
Anyone have any feedback on this idea?
Will it just create turbulence?
Will it be the hot new mod for '07?
Time will tell, But what are your opinions?

GreekPower

jaygnar in lameterms no its pointless

tnelson

He said in lameterms. I think the word you are looking for is in LAYMAN'S terms. I will refrain any futher reference to this because making fun of you would be way to easy.


To break it down. Even using a dremel motor, and hooking a fan to it, the most you will move is around 80 cfm. An engine draws WAY more than that. You will gain a 1/2 a horsepower for around 300 rpm, that is, if you actually seal the fan in. an aux fan like you propose will not draw enough air to matter, and will actually be putting a restriction in front of the intake area, creating a slowdown as well as turbulence.

Plus, you are then pulling air past fragile fan blades, which could easily end up cutting through your filter and getting sucked up into your engine. BAD IDEA. Safe yourself the time, money, and embarasment and never mention this again, or people will make fun of you. Especially me.

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http://www.youtube.com/watch?v=feLqz1udhtY

GreekPower

and i ment lameterms go ahead poke fun just how we say it up here

Jaygnar

Yeah, I did the math and you guys are right, I couldnt get any increase in airflow with a fan. It was just an idea and so what if it was a bad one. At least I did'nt actualy build it yet.
Anyway, does anybody have any hints and or tips for building a custom air intake box?
I'm thinking I'm gonna make it similar to the stock air intake box but as large as possible to allow as much airflow as possible. Probably gonna build the thing to rip off the design of one of those weapon-r intake boxes. Just gonna make it myself outa some sheetmetal and pop rivets. I got time to spend but not money.
As far as the intake itself goes, is there realy any advantage to buying a metal tube to run from the engine to the filter box or can I achieve the same results using the stock rubber tube? I mean if I can save money, I need to. I'm on a realy tight budget.
Opinions?

bl420

i just finished a modular CAI for our cars...

what i used is an ebay intake tube for our cars

and the modular parts at pepboys..

list:

2- 1 1/2" Extension
1- 90 Degree elbow
1- 4" Straight tube
1- 3" diameter silicon coupler

first connect the 4" straight tube to the air filter
then you connect the two 1 1/2" tubes together and then onto the 90 degree elbow... to the end thats going onto the ebay SR tube

then feed the pipe up the hole that goes to the front bumper
and connect the 90 degree elbow to the 4" extension tube

after that you use a silicone coupler to attach the tubes between the modules and the ebay SR

filter>4" extension tube>90degree tube>1 1/2" tube>1 1/2"tube>ebay SR.

http://www.powerflowracing.com/spect...sp?PG=2&PSG=32

it uses its own style of clamps that have rubber orings that fit in between their tubes..

you can probably take out all of their clamps and replace them with silicone couplers

or use them but only to connect between modules..

for example from the modules connecting to the ebay SR i used a silicone coupler instead

and for the modules to the filter i used a silicone coupler also.

thats it...

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**Anti Alpine Type-R Thread**

tnelson

That may be how you say it, but it doesnt make it any less wrong. http://dictionary.reference.com/search?q=layman&x=0&y=0 Its laymans terms. That refers to someone who in this case is not a professional mechanic and has no specialized knowledge. Makes sense.



To bl420. Been done, your method is as good as any. Not bad work


To jaygnar. Adding a straight pipe from the throttle body to the airbox might look tacky. Might get what you are looking for, a home brewed intake, but there are quite a few intakes out on ebay that fit perfectly.

Jaygnar

Okay, I'm going to go with an ebay shortram and a K&N filter with the Cold Air Box that is a clone of Weapon-R. I'm removing the resonator from the fenderwell but instead of putting the filter down inside the empty fenderwell, I was thinking of running some kind of a duct from the hole that is in the bottom of the airbox to the front lower area of the cars grille. I'm thinking that this will provide the engine with a lot of cold air but it shouldn't have any possibility of hydrolocking.
I'm still working out how to get the ducting in place between the cold air box and the front of the car. It's basicly building a cowl induction system. Anybody see any problems with this idea?
I'm still brainstorming so don't be afraid to shoot me down if this is stupid.
I just like kicking around ideas with others before I commit to one design.
Thanks for all your help here guys.

tnelson

Good design, lots of people have done it. Realistically, once you get in there, you will see there is a hole there. If you build a box to go over the filter, you avoid hydrolocking, and still give yourself colder air. Search this forum for the username stalker, and the phrase cold air box and you will see some great pics.

Jaygnar

tnelson, are you still using that setup where your filter is up in the foglight hole at the front of the car?
Did you drive in the rain with that installation or was that strictly a fair weather thing?
It just looked like the filter would be getting wet and dirty from road grime.
Just curious,
Thanks for all your help and input on this project.

tnelson

Drove with it everywhere for 2+ years. No fender liner either. But i cut my cold air off RIGHT AT the hole where it drops into the fender well, so it sat much higher than most, and it wasnt hanging down real far. I also used an 8 inch K&N which allowed me to still pull air from down lower, with less chance of a hydrolock. But you do have to clean the filter more often. I dont really recommend this.