Intercooler

[CnoTataymo]

Since I'm going to be having some money in the next few months, I was thinking of a custom front mount set-up. I was wondering if this size intercooler is good for stock to 10 psi? I was considering this size because its almost the size of the BEGI.

http://www.cxracing.com/mm5/merchant.mvc?Screen=PROD&Store_Code=CXR&Product_Code=AU-IC0017&Category_Code=INCO

[Matrix]

I'd personally go with something a little bit taller to fill out the bumper opening a bit better. I don't know if there would be much of a performance difference, but I think it would look better.

[03promaz]

I'd personally go with something a little bit taller to fill out the bumper opening a bit better. I don't know if there would be much of a performance difference, but I think it would look better.

http://mazda3online.web.aplus.net/product_info.php?cPath=183_275&products_id=660

Im gonna be using that one. I havent mounted it yet but I have held it up behind the bumper and its fills the hole really nice.

[Matrix]

http://mazda3online.web.aplus.net/product_info.php?cPath=183_275&products_id=660

Yeah, 6.5" sounds about right.

[kamon8404]

Yeah, look at the price difference in the 2. It good to keep the front grill on the car to protect the fmic as well. Might not look as good but if you plan on having the car around for awhile i would keep it on for good measure.

[03promaz]

Yeah, look at the price difference in the 2. It good to keep the front grill on the car to protect the fmic as well. Might not look as good but if you plan on having the car around for awhile i would keep it on for good measure.

Yeah Im not gonna have a lower grill so i wanted something to fill the hole

[CnoTataymo]

I measured how much it would fill the bottom grill and it would fill most of it actually. The height of the intercooler would be perfect from the bumper support to where the bottom of the grill. So basically all of the core would face air and not some being blow from the lower bumper.

[justa4banger]

Umm Gentlemen bare with me.

Theres alot more to a IC then just its size and shape and looking cool. that IC might work well for 5-6 psi, but i bet the Pressure drop is HUGE once you get to 10-15 psi +

I personally would opt for something that had more core in it. Theres a thing called frontal area of an IC. you take the measurements of the ic on the END tank size and multiply length x height x .45 (equals 45% ) and that gives you frontal area.WHY 45% well if you look into an IC you'll notice the aircharge can only pass through less than half the IC cause of the fin area. the reason this is important is it helps you balance the system and not over work the turbo. With that IC you may have to run as much as 15psi Before the IC to get 10 psi on the manifold. Well the more you compress air the more heat. IC cool the temp but only so far. the frontal area of the above IC is 6 Sq inches. Very small. you should run somewhere around 30sq inches of frontal area on the IC, to make 330flywheel hp.

Long story short i used an IC with these dimensions 18Lx6Hx3W it had end tanks like the IC posted above.
frontal area was 8.1 sq inches. i made 322 whp and 346 wtrq at 26psi boost and 31* total timing.
Later i switch to IC that had the SAME core dimensions as above but it had the end tanks on the top and bottom (like a procharger IC)(this also has the tubes running verticly not horizontal). the forntal area increased to 24.3 sq inches. Now i make 324 whp and 379Wtrq on 24psi of boost and 4* less timing.

WHY? less pressure drop= less heat and kept the turbo in its effciency range. Also too much PD cause the compressor to struggle which is directly connected to the turbine. this slows the turbine down and chokes the exhaust. the exhaust wheel could keep some expent gases in the chamber allowing for more timing due to the excess amount of inhert gas in the chamber. this explain why i could run so much MORE timing.

i suggest getting a corky bell book and educate yourself. save you time and would help you make the most of your setup.

Besides the above IC is whimpy looking :D

If you want some ideas/pics or are confused, PM me and i'll send you pics of what i had and Dyno NUMBERS to prove what i'm talking about.

[yashooa]

I have the Perrin 28" X 9.25" X 3.5"

http://item.slide.com/i/uid=sdWMjX8LeuUxWkUEg3Poaq23k8JGrqlPDvV4ifvgKisVKq-ggVTxFzPz_ZWtiSO_vvUcpKXgv4o

[justa4banger]

I thought i post some pics of what i mean about top/bottom endtank IC's vs side tank IC's
this is a top/bottom. this IC flows Well but isn't as good about coolinghttp://i93.photobucket.com/albums/l51/justa4banger/topbottomic-1.jpg

This IC is a side tank IC. Great cooling but not so good in reference to pressure drop PD. http://i93.photobucket.com/albums/l51/justa4banger/sidetankIC-1.jpg

Now if the IC is big enough like what Yashooa posted then for 10-15psi it will work great.

Keep this though in mind. go as big as you can and not so big in one area, meaning get a IC thats almost as tall if not taller then it is WIDE. this gives you good cooling and less PD.

[justa4banger]

OPPS a double

[justa4banger]

Oh last thing......... the more boost you run the more PD becomes an issue. so if you plan on running HIGH boost (over 15psi) then you might wan to look at IC design more carefully.

Also i wuldn't worry about lag too much. piping size does matter but for most apps 2-2.5 " pipes is suffice. besides you can always change where the turbo kicks in with cam timing.
On the SVO i can adjust the power band by as much as 600rpm just adv/retarding the cam timing. I will say though my expeience is limited to SOHC, the DOHC could have more room to play with.

If you guys needs more education on selecting the right IC for your app, read this thread
http://www.turboford.net/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=2;t=043825

Theres a good amount of info on why IC's are important and how the proper IC will give you the most from your motor. Especially in HIGH boost apps

Also heres a link to my album/IC setups (in mustangs) for reference and dyno charts to show differnce in HP ratings. http://s93.photobucket.com/albums/l51/justa4banger/

[nazgul350r]

I thought i post some pics of what i mean about top/bottom endtank IC's vs side tank IC's
this is a top/bottom. this IC flows Well but isn't as good about coolinghttp://i93.photobucket.com/albums/l51/justa4banger/topbottomic-1.jpg

This IC is a side tank IC. Great cooling but not so good in reference to pressure drop PD. http://i93.photobucket.com/albums/l51/justa4banger/sidetankIC-1.jpg

Well sine I just pm'ed you on another thread I might as ask about this one.

Why does the bottom IC have more pressure drop? Is it bc the air has to travel longer when compared to the IC in the top picture? Both of these designs are what I was looking to fab up for my car.