EG-EK Civic half size radiator into CC GSR/EVO

[Cranked]

Hey guys,

So after much stuffing around at nearly finishing my setup with an MR2 radiator to sit under the radiator support, decided it was too much of a headache with changing water pipes around to suit a cross flow radiator. I thought I'd try the half size Civic 2 core alloy trick, sweet, found a trick one shrouded and 12" fan on the back, great!.... Until I attempt to fit it into the car, BOM BOM! Rear fan fan fouls the compressor housing of the turbo. F%#K!

So I have a couple of thoughts.

One: Reccess the fan into the shroud so as the fan will sit on the back of the radiator and then the shroud fits over/around the fan. My concern is this will effectively render the shroud pointless or even detrimental to the cooling of the radiator. Thoughts anyone?

Two: Fit the 12" fan as a pusher on the front and call it a day.

Three: Fit the 12" fan on the front and fab up a tapered inward air dam.

Four: Refit the shroud and fan to the front and also make a tapered air dam onto the shroud.

Two is the obvious easy option, but I want to attempt the get the best cooling as possible., It's really a trial thing and I'm open to suggestion and advice would be greatly appreciated.

Cheers all.

Sean

 

[bitza]

I would cut the shroud off and run the 12 inch in front (as a pusher).........has worked well with my copper core.....even though it's on a cordia.

As seen here......but I run 2 12 inch slim line fans:

 

[Cranked]

You mean like one push, one pull? The pic above is what it would look like with shroud on the front, it's removable and the fan bolts to it.

 

[Rockabilly]

Make it a pushing fan. Put a return air airconditioning grill about 3mm off the radiator core. Mount the fan with shoud about 3mm off the 12mm x 12mm x 12mm deep mesh grill.
The pushing fan will now continuously be forcing air into the 12mm cube pockets, rather than the air just splattering sideways. A return air grill in front of a front mount intercooler
will concentrate more air into the fins instead of just splattering sideways also. Not too hard for you to fabricate.
Cheers

 

[evo-gsr]

http://www.4gtuner.com/topic/4528-my-new-toy-evo-iii-rs/page__st__40

86psi has the same setup on his car...the fan looks like its almost touching his comp housing too.
Go the pusher on the front...if you look at his pics the radiator is copping heaps of air flow with no condensor in front of it...maybe just use some sort of air diversion plates to channel the air into the radiator as well?

 

[86psi]

Yeh fortunately for me I have a tial exhaust housing and its v-band so I was able to rotate my turbo towards the engine more. Though I also made a small mod to the shroud to make sure I had plenty of clearance.

 

[Cranked]

Thanks, I'm thinking about cutting the shroud to recess the fan in more and basically use the shroud for a tidier fit to the back of the radiator (as opposed to mounting onto/thru the radiator itself) and then have the front dammed up to prevent air spreading accross the face. See how I go, I've got some spare time at work this evening, so I'll have crack and post up my progress. Jamie I'm sure you'll be watching this space.... lol

 

[evo-gsr]

Yep...I am...hurry up and work out a solution will you!!

 

[bitza]

(as opposed to mounting onto/thru the radiator itself)

I have had no problems, fans run and don't hit the core.........having a dig?

 

[Cranked]

Na no dig, that's how my last rad fan was mounted that way and... modifying the shroud was a rubbish idea (or I stuffed it up, but that's a mater of opinion. LOL). It is just too thin and soft. So I think it'll be mount onto back of rad and box the front in with 50mm ally plate, with the driver's side angled out to try and direct air in around the intercooler through the core and will increase overall surface area. I have no condenser either so there will be less restriction there also, and room in front of radiator.

So much room for activities!

 

[Cranked]

I'm hearin ya Aldo. Long time no speak, I tried to call you a few times as I've been up your way a few times, even took the skid pig out for a run on wednesday night for a bit of fun.

 

[4piknup]

What did I miss↑ ?

Imo, the best thing to do is ducting the front, so every bit of air that enters the front bar has to go through the radiator. This means a plate to seal the bottom of the front bar to the bottom of the rad support panel and stuff to stop the air exiting the sides and top of that area.

Next is the fan placement, straight on the back if you have room. The duct is good but only the way that it is. Imo it wont work as a pusher setup or with holes in it.
Or fan as a pusher.

The fan ducting relocated to the front of radiator mightwork but you need to use a differential pressure gauge with dual inputs to see if it helps or hinders airflow at speed...
You will need to test it.

My 2.4c

 

[evo-gsr]

Jack...the good bits have all been deleted...you missed out on someone losing it for no reason at all, because apparently his ideas were no good. According to him that his....

 

[captainTeeBag]

I think that jacks idea of channeling as much air through the radiator is a good one. Also wouldn't hurt to vent the bonnet to increase the airflow too. If you pressurize too much air into the engine compartment with no where for it to escape you can end up with as much pressure in the compartment as is flowing in the front. This effectively stalls the flow of air through the front of the car and can cause overheating. Speaking from experience here

 

[EVOCPE]

Raisin the rear of the bonnet with some spacers helps the heat escape

 

[khubner1]

actually raising the rear of the bonet doesn't help vent the bay it does help cool but not clear air it actually put more in. due to the high pressure zone at the base of the windscreen

 

[4piknup]

Somebody stick some bits of wool to the rear edge of a jacked up bonnet and go for a drive and see what way they blow.
My stubby says the air flows from under the bonnet upthe windscreen at say 80kmh with the bonnet lifted a inch.

But ive been wrong before.

 

[khubner1]

i read an article on it a while back and the wool actually was sucked into the engine bay i'll see if i can find it

can't seem to find it but general consensus is the put vents just behind where the rad would sit so as to create a low pressure area above them to suck the hot air out

 

[CYBORG-X]

basic aerodynamics for 1 part intake you need 3 parts exhaust. (look up ww2 fighters) now again to basic aerodynamics.. you never put a funnel infront of an intercooler or radiator, when all this air tries to go through the rad, it creates turbulence and blocks the radiator (graham bell goes through this very well in a book called maximum boost) now thermofans are used only when not moving, but turn into a drag while moving, with a half rad, expect never to do circuit work as you will cook your motor in a chase. my suggestion is to mount the fan inbetween the intercooler and rad, giving both room to 'breathe' and lifting the rear of the bonnet or rear vents..

 

[Cranked]

Well it is running a CF evo bonnet. Suffice? Im thinking whar jack us talking about. Will take some pics when finished. I'll see how it goes and worst case pull it back out and try somerhing else.