Intercooler options - need opinions

Started by m1tch, February 24, 2010, 07:01:37 PM

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bumpstart

Quote from: turbotoaster;675030thats a really funky design, never seen anything like that before, does the air bounce off the rad and up to the intercooler, or just travel through once the high pressure has reached a certain point infront of the rad that it has to find somewhere else to travel, as i cant see how the cooler gets a direct path to fast moving air

the I/C is sealed either end with stick on foam cushion seal
so forms an area between the headlights that is isolated from the air in front of the radiator
- but linked to the engine compartment behind the radiator  by the 20 mm or so between it and the bonnet

and so works on the principle that air building up in front of the radiator is pressurised,, and pressure acts in all directions
 the top of the IC is linked to the engine compartment behind the radiator
 where the pressure is the same as the rear of the radiator
( and hence there is pressure drop across either side of the I/C and radiator cores = flow )

similarly the bottom stock tray is removed and the oil cooler projects forwards as the bottom lip of the airbox
( that is effectively made up on three sides by oil cooler, I/C and rad , and on 2 other sides by sheet metal )

removing the bottom tray increases the open frontal area that feeds the box
( so its much more than the air just from between bumper and stone tray lip )

to boot, the flat mounted oil cooler has its exit surface ( bottom ) subject to fast moving right angled air
- thus forming a venturi and more of a pressure drop than what would normally be achieved while vertical

( the flat oil cooler idea was used by mazda sponsored racers for many years, data showing 10 C ( 18 F ) improvement over the vertical install in sa22 racers )

QuoteI do like that semi V mount idea  can I use the idea?

The problem being is that my radiator is MUCH MUCH bigger than that so might have to route pipes slightly wider but then again, I won\'t have an PS pulley in the way, what turbo is that btw?

be my guest,, take what you need ,, leave what you don\'t

the stock FC radiator sits in exactly this position
( the radiator frame was in fact built for my previous FMIC with stock s4 FC radiator )
i have the radiator on the same angle as stock,, merely pushed back so far as to provide the minimum of clearance from front pulley to the fan
the bottom outlet of stock radiator will nestle in the bump that is in that corner of the sway bar

turbo is a home built special,,equiv to a stage 2 highflow s5 turbo
-not quite a t88 but takes my fuel system, to its max at 18 psi

i use a custom rear dump plate ( 76 mm exit moved towards the wastegate)
modded wastegate flap with trust adjustable wastegate can
with stock mazda /hitachi turbine wheel and shaft
knightsports s320 0.6 compressor cover
 t04b V trim 8 bladed compressor wheel
( 56 x 70 mm , 48 pounds per minute )

bonnet is stock turbo bonnet, although i know of a recently installed system that is similar and using the NA bonnet AOK

turbotoaster

thanks for the great description, thats a pretty new idea to me.

I has seen flat mounted intercoolers where the flow of air would be passed down underneath the car through a cutout in the undertray(bit like a traditional v mount but roles swapped and the cooler being horizontal instead of 30-40 degrees.

my new cooler arrived today and im trying to decided how im gonna mount it myself