I had to remove the front bumper a few weeks ago to replace IC piping clamps and do some other stuff like re install the crash bar.

I noticed that air coming in is definitely not ducted. It can spill out both sides of the IC and radiator. huge open areas there. Also there is no ducting to the oil cooler or small cooler on the drivers side ( is this a tranny /transfer case cooler ? )

Has any one constructed anything to prevent spillout or came up with ducting for the 2 coolers ?

I was thinking of using thin sheet aluminum to make the ducting for the coolers, basically rectangular, with closed cell foam seals at the front lip ( high pressure area ) and the coolers ( prevent spillout ).

To route the exit of air, i would cut a panel out of the plastic fender liners, then install louvered aluminum panels kinda like a/c registers.

For the radiator and IC, what about using 2" thick styro foam cut to shape to fill in the spillout areas, at least forcing the air to go through the intercooler and radiator? Next question would be...there is like 6-8" between the IC and radiator. Does anyone know if air stall or turbulence is a problem exiting the IC causing the radiator to run hotter that it should. Would routing the air to reduce spillout help or hurt this effect ? < road racers feel free to step in here>

The other thought i had was to install fans on the back side of the coolers and have them activate via temp sensors off power relays. But airflow is cheaper and free.

If this thread can be tied to the splitter and undertray/diffuser topics or if those people could glance in and comment that would be very nice !!

Let the discussions begin < puts flame suit on >

Milburn

 

If going to extremes, the BEST thing you can do to increase airflow through the intercooler and to radiator is to remove the A/C condensor.

All other solutions are a distant second place although your theories are on the right track.

 

i was thinkin the same thing ^

i was trying to picture his idea in my head and the condenser kept getting in the way

do some teasts and let us know!!!!

 

I plan on it. I am going to order a water temp gauge with adaptor for a radiator hose. After i install that, I will start the process, keeping track of the temps.

I know the ac condensor is right there. What I plan on doing is blocking off the areas to the side where air is free to spill out.

No comments on the ducts for the coolers? This will take high pressure air from the two smaller openings on the front bumper typically used for source air for brake ducts. In fact if someone was clever at sheet metal fab, the duct would have two exits, one for brake and one for the cooler on each side. That way you could hook up the brake duct hose ( was it Forge that sells the bolt on piece...not the Mitsubishi RS one that doesnt provide positive routing of the air directly to the caliper/rotor ).

Milburn

 

only solution i see.

 

we are actually turning our oil cooler, so the edge at the bumper is as far forward as possible, and the air exiting will go out the side of the bumper before the wheel/tire, as opposed to in the fender... where there is a lot of pressure in front of the tire... ( we are actually cutting an opening in the side of the bumper, and eqpoxying mesh into it, and making an aluminum duct to channel the air in and out

similar to what you see here on the flying lizard alms gt3rs



also switched to a tube fin PWR fmic to allow more air through and into the radiator and we will be making aluminum shrouding to seal it.

cb

 

just giving up on the idea?

 

Nope not giving up. Already bought thin sheet aluminum to use as block off for radiator.

I will be doing this when the bumper comes back off in a few weeks. Closed cell foam can be had at Home Depot .

Chad : nice shot of the Porsche. Not sure I want to slice the bumper up tho'. Need another area of low pressure to route to.

What about using kickouts to tumble the flow and create less pressure around the wheelwell?

Has anyone installed the Kamispeed undertray ? How is it mounted? Standoffs?

Milburn

 

we are actually adding strips to the leading edge of the fenders up front.

and will have a strip at the leading edge of our bumper hole on the side, i was testing it with an 8000 cfm blower yesterday.

cb