Intercooler setups

[tyottsoarer]

The larger the diameter of the pipe the more volume the piping will have, so more air will be moved so you have the capacity for more power but at a cost. You need to move the air to fill the larger space so in the case of a turbo you will have lag if the piping is too big. You need to mach the cooler piping to suit you aplication. The delta fins sounds as though it is designed to maybe accomidate a V mount setup?

EDIT*

[VeeP]

imagine picking up an intercooler and looking at it from the inlet to the outlet. . . but look at the surface of core only (nothing to the with the inside. . just the outside) and the left side of the pictures is where the outside air is coming from.

the black represents the tubes where the charge air passes through (imagin the charge air is flowing in and out of your screen through the black tubes - im basically showing a cross-section diagram), the grey area represents the fin section (where the ambient air passes through)

http://www.filefactory.com/file/0c539c/
and
http://www.filefactory.com/file/be6b44/

the only difference im pretty sure between the delta fin and ordinary bar and plate is that the shape as view from the outside is more aerodynamic. So instead of air "crashing" into the intercooler and being turbulated as it flows past the cooler and thourh the fins, it is guided past the charge air tubes and smoothly flows through the cooling fins. Is it a lil clearer now? If not, il make a much clearer picture in 3D and that way you will definately understand - now i just gotta find 3dsmax

i just realized how crap i am at explaining shit. . . alas. . off to make 3d drawings

[mic*]

The following graph has been adapted from imperical measurements. It is taken from "Maximum Boost - Corky Bell, 1997"

Its a bit of an indicator of the area for charge air face you would chase for an efficient FMIC.

area for charge air face = length of channel X width of channel (core thickness) X no of channels.

The graph shows flow area which is stated as typically 45% of the above figure.

Ie. based on your engines peak L/min, take the given area from the graph, and this repesents 45% of the charge air face area as above.

Turbulators are the little wavy things that ensure the charge (or cooling) air flow is turbulent not laminar.

[IMG][/IMG]
EDIT:had low & high density round the wrong way, but it has been changed now.

Note that thicker cores have less frontal area for the same charge face area, and are therefore generally less efficient. Cores with longer channels have less charge face area than those with shorter channels, when fraontal area remains constant. They therefore cause more pressure loss and are less efficient.

[kingmick]

your pics dont work! i havnt seen a close up of one but a assume that exacly that! nothing to do with the inside of the cooler, it allow air to pass threw smoothly. As i said with looking at them up close its hard to tell how affect it is done and have it still retain the same heat exchange per inch etc.

[VeeP]

argh. . .somebody direct me to a pic posting help page or something

[mic*]

argh. . .somebody direct me to a pic posting help page or something

imageshack.us

[kingmick]

yes mic* and they also increase surfuce area. What you have to do is compromise, because the turbulance creates drag which increases the the back pressure so you loose boost. If you could have a very very long cooler your could have it smooth all the way threw and get the cooling needed, but the cars body isnt that wide. The turbulence increase effency but also increase back pressure.
Like all things in cars its a compromise. The ultimate cooler has the smoothest flow with the maximum heat exchange in the smallest package.
So you dont want maximum turbulance, but minum that will do the job!

p.s i browsed your post mic, but its all pretty basic to understand! in car intercoolers on cars, it dosnt need to complex for a street car.

[kingmick]

argh. . .somebody direct me to a pic posting help page or something

http://www.imageshack.us/ lol sorry for the echo.

[BlackSupra]

If you have a 7MGTE and use 60mm pipe your head gasket will blow, if you have a 1JZGTE, the 60mm piping will cause your turbos to fall apart...

i have 70mm on my 7m...... I better go check to see if it's gone BHG!

[brett_celicacoupe]

Talk about try to make simple things complex without knowing, but im happy to help your understanding.

cmon.....he isnt too far off

how about you help my understanding (and others) and demonstrate your broad knowledge and use this formula to calculate the pressure drop across a chinese cooler vs a brand type cooler



here is your units

where is:

Dp - pressure drop
rho - fluid density view table
Q - volumetric flow rate
D - pipe diameter
lambda - friction coefficient
L - pipe lenght
sum ksi - the sum of minor losses coefficient

from this site

note; i can only assume this is right formula as these types of calculations are above me right now..... im sure KM can work it out though

[kingmick]

hahahaha what are the inputs? i dont use chinese cores and i dont know of anyone that does! ahahahahahahah

[horse]

here's VeeP's image for you guys...i put the two into one to save uploading 2 pics

[benjamin]

^^^ Delta Fin FTW!!!

[progkamol]

Does it really safe to buy machanical parts from ebay??? I'm still not daring to buy from ebay. Earlier on this year my work mate bought defi guage from ebay and it turn out to be fake guage in defi box. But silly him anyway coz he didn't see the actual guage just seen the box and it described as genuine defi guage ...

For intercooler stuff, I don't know much about intercooler as well. My new engine do have a small intercooler mount on top of the engine. My knowledge about intercooler is IT COOLS AIR? thats all. So rep for people up there for posting up useful info, I learn alot from this

[Skip]

i have 70mm on my 7m...... I better go check to see if it's gone BHG!

No no 70mm will be fine as long as the run of piping is less than 2 metres

brett_celicacoupe: You really can't use Bernoulli equation on gases such as air as air is compressible, bernoulli assumes the fluid flowing is incompressible. Having said that the flow of air can be considered incompressible if the mach number of the gas is less than 0.3, which corresponds to 102 m/s. Sow work out how fast the air is flowing into the engine