Anybody know the intercooler dimensions of all the turbo kits out there for the VQ?? from end tank to end tank length, core length/ and height



to name a few brands....

greddy

APS

Turbonetics

Ultimate Racing

Power Enterprise

thanks

 

bump

 

Accordfreak, the dimensions of the dual entry intercooler used on the APS Intercooled Twin Turbo are below.



There is also a good deal of information on the intercooler itself at http://www.**************/350z/interco...ntercooler.htm You might find it useful.

George

APS

 

Great picture, I love the wide boost aspect , low drag design.

 

This is out of the 2004 Greddy Production Guide.


Length: 600mm (23in)
Heigth: 292mm (11.5in)
Width: 115mm (4.5in)


1198 cubic inches total volume
264.5 square inches surface area

Using the APS numbers here's their info,

787.5 cubic inches total volume
225 square inches surface area

I can't find information on the other kits.
Gary

 

Something significant to note is the direction of boost flow.

WRT Greddy it flows horizontally, OEM bumper beam removal:

cross section: 11.4" x 4.5" = 51.3 (smaller)
and a drag length of 23" (very long).

WRT APS if flows vertically, OEM bumper beam retained:

cross section : 25.4 x3.5 = 88.9 square inches (larger)
drag length : 9" (very short)

What this implies is that the APS design is mor optimally designed to reduce psi loss thru the FMIC and shouod have less effect upon the OEM radiator air flow. A more balanced design IMO.

 

Good point G3po. The following diagrams better explain the difference in flow through the intercooler core.


The horizontal flow configuration shown above forces the charge air to flow through very few internal intercooler passages. In addition, each internal passage is very long, causing further restriction to charge airflow - resulting in a high pressure drop.



The vertical flow configuration as specified by APS spreads the charge air flow evenly over a far greater number of internal passages and results in significantly less restriction. The path length of each internal passage is also shorter, with a smaller fraction of total charge air through each passage, thus further improving air flow over a horizontal design. The net effect is massive charge air reduction but with improved air flow and less restriction over a cheap horizontal core configuration intercooler.

I suppose that it should also be noted that the APS core is a custom bar and plate configuration, not tube and fin. The advantages are, stronger and more durable construction, high thermal inertia (for low air flow conditions - such as warming the tyres prior to staging a 1/4 mile pass), low restriction, high efficiency etc.

In short, I believe the APS approach results in the optimum intercooler configuration for the Z - particularly in high horsepower applications.

George

APS

 

I agree completely that the larger charge flow area of the vertical design will result in lower losses due to restriction. I always wonder why so many intercoolers are packaged with the horizontal flow path vs. the vertical one.

The reasons I can guess are packaging, cost and maybe other factors that out weight the gain of the vertical design.

I'd love to see a total flow loss done with a Greddy core and the APS core. Just to see if the(2) 90 degree turns that the vertical design requires significantly affect the loss vs. the straight thru method of Greddy offset by the smaller charge flow area.

Of course unless you actually do that this is just bench racing. To many variables to guess about i.e. turbulator density, end plate restriction (Bar and plate have higher mass and strength but more restriction entering the core due to the squared ends vs. tube and fin is lighter,has less strength and better flow all other things equal) Not to mention one may be better than another at different power (flow) levels
Just fun to chew on.
Gary

 

Gary the technical issues are very complex if you wish to delve deeply, however in general terms (and keeping it specific to the 350Z – because it has unique requirements), I’ll give it a shot.

From a manufacturing point of view, the vertical stack is more demanding because of the greater number of bars and plates and at the end of the day this translates to higher cost.


As far as air flow is concerned, the velocity vectors turn once over a very wide distance on entry (up to half the width of the core = 25/2 = 12.5 inches) on entry. This allows the air to turn very gradually – a good thing. Air flow is momentum based and the end tanks on the APS intercooler are designed so that an equal mass of air reaches each internal passage. On exit, a similar situation exists however this time, the air velocity vector turns 90 degrees over a smaller distance (essentially the height of the exit end tank. This is one reason why the exit end tank is taller than the entry tanks.


With a horizontal flow core, the velocity vector turns 90 degrees twice on entry and again twice on exit. In addition, both turns must take place inside the hight of the end tank.

As far as internal flow is concerned, it comes down to the internal air passage cross sectional area and fin arrangement. The tube and fin core has a 5mm edge boundary so for say a 3.5” thick core, you lose half an inch in internal thickness which impacts on passage cross sectional area. In addition, the fins are extruded so they are essential in a straight line and parallel to flow. This means that the internal surface area presented to the charge air is nowhere near as great as that on a traditional bar and plate – which has an alternating offset internal fin arrangement. The result is the bar and plate core used in the APS intercooler flows better and removes far more temperature than the traditional horizontal flow tube and fin. These are just some of the reasons for APS specifying this vertical flow bar and plate core on the 350Z.

That said, for other vehicles, other configurations may be applicable, which is why taking a general purpose core from one vehicle and using it in another different type of vehicle is often fraught with problems – even though the cores may be of similar size.

Enough for now. It’s time to go home….

George

APS

 

thanks for answering the question and adding a little technical aspect to it.

it seems like nobody knows simple dimensions to the intercoolers that come with these kits except for you 3.

 

Don't know the dimensions of others all I can add is that "all"
kits other than APS use off the shelf horizontal flow designs.
APS is the only kit vendor for Z to date that has designed and deployed a low drag vertical FMIC.

 

You forgot all about me (Ultimate Racing TT)

Az

 

Sorry, doe sthe UR FMIC mandate reoval of the bumper beam?
Kinda looks like it does.

 

No, it does not and that why I like it.

 

looks good aalzuhair.

is yours the same dimensions as APS?

 

I have listed the dimensions as I remember them, but I will double check it.

Az

Length: 24in
Heigth: 9in
Width: 3.5in