Yesterday I installed a JDM TypeS air chamber into the car. It is replacing an AEM Cold Air Intake for now, previous to that I had an AEM short ram. These are the pictures I took while comparing them.
The diameter of an AEM Cold Air Intake
AEM Short Ram diameter
Stock intake tube diameter (note the inner diameter is less than the ruler shows)
The TypeS Air Chamber has three parts to it (see picture below list)
A box that goes over the stock intake's lower half
A rectangular box follows this
A rubber elbow then follows this to the throttle body
JDM TypeS Air Chamber for #1 Opening
JDM TypeS Air Chamber for #1 Circumference
JDM TypeS Air Chamber for #1 Diameter 1
JDM TypeS Air Chamber for #1 Diameter 2
JDM TypeS Air Chamber for #2 Opening
JDM TypeS Air Chamber for #2 Width
JDM TypeS Air Chamber for #2 Outlet
JDM TypeS Air Chamber for #3 "in" side
JDM TypeS Air Chamber for #3 "out" side (goes to the throttle body)
JDM TypeS Air Chamber with AEM Cold Air Intake inside of #1
JDM TypeS Air Chamber with AEM Cold Air Intake mated to one end of #2
This is my engine bay
I'm going to try to dyno this against the AEM Cold Air Intake later this year. I know alphajesse has dyno'd his but I want to get another one up. I basically want to see for what reason the JUN Hyper Lemon Prelude uses the STOCK INTAKE CHAMBER. Also I've noticed that Mugen, Comptech and other tuners like ARC all use a box under the hood with a cold air tube. Kind of curious to see what happens.
neve knew the Type S intake had such a large difference to the USDM intake how much did that cost?
I'd like to see a comparison of aem's v2 intake vs the jdm type s intake; should be interesting....but too bad aem hasn't come out with the prelude one yet
i ghetto rigged a cold air enclosure on my lude using the battery as one side, and lots of chipboard and 1/4" black foam rubber everywhere else. it sealed up pretty well around the iceman intake tube and the hood, but had a few small areas up front where hot air could conceivably creep in.
i datalogged a relatively significant difference in IAT vs. a short ram intake (as much as 25 degrees iirc), but frankly couldn't tell any difference between this setup and the iceman CAI version, despite the extra inches of tubing on the latter. i would guess the volume of the "tub" i made was around the same as the one in the S2k.
eventually i ripped it out because it was soooo ugly and i never got around to building a proper replacement out of more permanent / aesthetically pleasing materials.
Quote:
Originally posted by marcucci Now, when is someone going to transplant a cold-air tub like the S2k's into a Prelude?
that will be great to see how it stacks up against the AEM on the same car. The type-s should kick it's butt in TQ below vtec, but I'm sure that the CAI will produce more power overall.
Originally posted by schwett i ghetto rigged a cold air enclosure on my lude using the battery as one side, and lots of chipboard and 1/4" black foam rubber everywhere else. it sealed up pretty well around the iceman intake tube and the hood, but had a few small areas up front where hot air could conceivably creep in.
i datalogged a relatively significant difference in IAT vs. a short ram intake (as much as 25 degrees iirc), but frankly couldn't tell any difference between this setup and the iceman CAI version, despite the extra inches of tubing on the latter. i would guess the volume of the "tub" i made was around the same as the one in the S2k.
eventually i ripped it out because it was soooo ugly and i never got around to building a proper replacement out of more permanent / aesthetically pleasing materials.
the trade-off in intake design is often that to achieve a source of COLD air (i.e. outside the engine bay) the piping has to be too long from the throttle body.
long intake runners and long intake piping are generally good for top end power but bad for low and midrange torque. (correct me if i've mixed this up?)
one solution to this is to run a relatively short pipe from the throttle body to a cone filter. then, you build a large insulated (or plastic at least) box around the filter, and duct the box to a source of cold air. this way when you hit the throttle, the intake is drawing air from the box immediately, helping throttle response and overall flow compared to a very long pipe outside the car, and helping power and resistance to detonation compared to a short ram sucking in hot air.
Quote:
Originally posted by nuro
todd, could you please explain what you're talking about. im not familiar with s2000's.
Originally posted by nmehta211 Just out of curiousity, how does the s2000 intake differ from the Type S? Could it be retrofitted, as I believe it has a conical filter design.
totally different, no way you could get it in there. it does have a conical filter, but the throttle body is quite close to the air box (remember that the engine is mounted longitudinally, with the intake side in the front) and the air box itself is too big to put anywhere under the hood of a prelude.
you'd be better off using a well designed short ram with a homemade cold air tub. that would be the setup to beat imo.
I am gonna get the Type-S intake some time this year. Late European Preludes have 200 BHP H22A8 engines, which have the "Type-S" intake, so I should have any worries importing a JDM part.
Schwett, you do have it mixed up. All things considered, a short pipe is good for top-end power and a long one is good for torque. Diameter is equally important and usually confuses the issue.
My comment about retrofitting the box was more a joke than anything else, schwett's "project" is about as close as you can get. I would love to see someone come out with something like this, a short-ram with a pipe sized properly (so many intakes are too large) with a cold-air tub surrounding the filter and an inlet to bring in fresh air. I have a suspicion that the fender well that most CAI's draw air from in the 'lude is actually a low pressure area at speed, but there's really no good way to get air under the hood. At least not with some serious modification.
Originally posted by marcucci My comment about retrofitting the box was more a joke than anything else, schwett's "project" is about as close as you can get. I would love to see someone come out with something like this, a short-ram with a pipe sized properly (so many intakes are too large) with a cold-air tub surrounding the filter and an inlet to bring in fresh air. I have a suspicion that the fender well that most CAI's draw air from in the 'lude is actually a low pressure area at speed, but there's really no good way to get air under the hood. At least not with some serious modification.
I've actually been giving this some thought. I have the materials to construct such a box and I MAY be able to get a duct to draw in fresh air but I have to talk to the guy who will fabricate it first as well as show him pictures of the engine bay.
The biggest problem with this is the amount of money it takes to dyno this set up as well as the cost of constructing the tub (the price for the tub is actually minimal in my case). I'm already taking a monetary hit by voluntarily dyno'ing my TypeS with the AEM Cold Air Intake.
Does anyone know what size diameter would be best to use in an experiment such as this with the stock throttle body? I have both the AEM Short Ram as well as the Cold Air Intake shown in the pictures above to use at my disposal.
Originally posted by marcucci Schwett, you do have it mixed up. All things considered, a short pipe is good for top-end power and a long one is good for torque.
Awesome thread! I've been thinking on what type of intake to get recently(cai,type-s,short ram). I know i'm not gettin a cai(the risk is just not worth the benefits imo)
Short ram, seems counter-productive to me, as it just sucks in hot air. I'm leaning towards the type s, it seems to be the best all around intake.
I just learned about the "cold air tub" idea today. Let me see if i understand it right. You put an insulated "tub" in your engine bay, and find some way to get cold air into it, then a pipe brings it into your engine. Is that right?
The Cold Air Tub/Short ram sounds like an awesome idea, like the best of both worlds. The benefits of a c.a.i. w/o any of the risks. I am familiar with the "if its to good to be true..." thing, so are there any downsides to making such a cold air tub/short ram intake?
Thanks,
-Greg P
how much did that cost?
