Everyone with an AEM CAI, could you please do me a huge favor,
would you measure the length of the piping from end to end, just run a string along the length of the pipe.

also what car and model is it on?

Thank you in advance.

 

lol

 

Why?

 

LOL. i wonder.

 

The one i am currently using was measured at 6feet 8 3/4inches.

That is off of my Freightliner 18 wheeler truck

Arno-who does not konw the lenght of his AEM




[Modified by 98itR484, 8:20 PM 1/1/2003]

 

Phat, Do you have a 5 lug conversion on that too?

 

I'd like to know why before I go and stick my clean hands under the hood

BUT seriously, WHY?

 

Probably wants to make his own.

 

Well if he did a search on CAI he would see that none of the home-made ones produce more power.

 

I will do it tomorrow, no prob.

 

jamie, you are such a nice duuuude

 

bah......tell us why first then you'll maybe start recieving some answers! Mine's off my car right now so its no big deal to measure it.....just dont have any string

 

This guy had too much or

 

He needs to know how much dryer t00bing to get y0!

 

some of you had it figured out, i'm tryin to make my own, AEM is the best CAI on the market across the board, they are for a reason, not just making some piping from the intake manifold to a spot in the fender well and sticking a filter on it and boom 8 hp, the length is tuned for the rpm band where you want the power, thats why AEM has a good broad increase of power in the midrange, thats why i want to know how long they are so i can calculate how long mine needs to be, theoretically anyways, to get it perfect i'd have find some dyno time and test with varying lengths, math will only get you so far, ballpark atleast

thanks

 

It doesn't matter how long it is. You know the approximate shape, do your own calculations.
Us telling you the exact length of the AEM piping will accomplish what?

If you really are making your own, you'll have to take a good number of measurements AND angles so you'll know how to 'bend' your piping.

 

have you thought of...

...buying one? Instead of spending all the money on making it and dyno'ing it?

Are you bored out of your mind?

 

actually, the length of the piping is what makes the AEM the most effective, yeah the bends are good and yeah its powdercoated, but the length is what gives it the advantage over others, they actually put some engineering behind it, the length times the air waves so that the air is under pressure and hits the intake valve when it opens, if the piping is not the right length, the air comes and smacks the intake valve when its closed or when its already open,

the only problem with bends is that you want as few as possible, as smooth as possible(ie mandrel bent), and as wide a radius as possible, ideally you want a straight pipe but thats not really possible

 

The bends are the key to the piping on the AEM.
Due to the fact that they must bend the piping to fit, they spend engineering money and time to make an ideal unit.

Again, the length doesn't matter, because if you follow the same path as the AEM, you will arrive at the same length. Three bends will take you all the way out of the engine bay and into the fenderwell directly in front of the passenger's front tire. If you make measurements in your engine bay following the path you would have to take with 3" piping... I'd bet that length will be VERY close to the AEM's length.


[Modified by Chris N, 11:33 AM 1/2/2003]

 

If your 18 wheeler hasn't been upgraded w/ 5 lug conversion, I'll trade you my ITR 5 lug conversion for your Freightliner 10 lug conversion

 

a close measurement through estimation of where the piping might be is not close enough,

if aem's bends are so greatly important and better then everyone else's, why is it that every other intake fits under the hood using the same size piping,

there engineering dollar is spent on determining the length, the length is the key, why do you think so many car manufacturers are coming out with variable length intakes, so the air comes rushing in when the intake valve opens giving positive pressure in the intake tract, pushing more air in, making....., yyu guessed it, more power

 

i don't understand the science behind the length theory....

 

I'm sorry to say, but the length has nothing to do with it.

If it did, then your filter would be as short as possible, because a short ram is proven to make more torque over a wider rpm band. They make it only long enough to reach the fenderwell, and not end up on the ground or touching the fender itself.

ALSO, if length were such an issue as you claim it to be, the filter would be a fixed length, and not be allowed to move in or out.

PLUS, every intake would have to be dyno tested to every car, and if any mods were done to the engine, the length of the intake would have to change to accomodate the new HP levels.

Just make your own, and don't worry about how long it is. Or buy a AEM or Iceman.

 

I'm holding steadfast to my opinion that the exact length is not important.

Neglecting air temperature, the shorter the intake arm the better. Since there is a tradeoff between short intake arms and getting cold intake air, AEM did what they could to have a path of least resistance with their miles of piping from the fenderwell. They say that the sound waves resonate in such a way that it increases the air flow and velocity. I doubt that it does that, although the intake does make good power.

Question: Can you make one for less than $200?? If not, you are just wasting money and time. I AGREE that it would be fun to fabricate parts for an engine, but it does get expensive unless you are making stuff from cheap hardware store parts.

If you are going to fabricate something, why not make a Mugen-style cold air intake duct to fit over a filter attached to the stock intake arm?? That intake makes the most power of any, and uses the stock intake arm. That would be a better way to spend your money, since the break-even point is ~$600, not $200 and since the mugen intake is proven to perform better than the AEM CAI.

 

http://www.mercurycapri.com/technica...intake/pt.html
read and educate yourself, if the shorter the intake the better, then why not put the filter on the throttle body, sheild it from engine temps and run a duct to a cooler part of the engine,