Jump to content
SAU Community

Cooling Fans Pulling Air Through Intercooler.

4drftn

By 4drftn,
in Engines & Forced Induction

 Share

Recommended Posts

4drftn Experienced

4drftn

Posted
Posted

watched a performance dvd the other week and there was a performance/race car on it that had a large intercooler in the back with twin thermo/cooling fans pulling air through intercooler.

i was thinking it is a good idea because it will always have cool air flowing through it.

when using fmic setup air gets forced into fmic while in motion, but if front mount has cooling fan pulling air through it would make intercooler more effective and efficiant...

saying all this if this is right, would putting a fan behind my fmic (pulling) create more of a gain? especially at standstill when intercooler is not getting air forced into it.

any info will be great or if anyone else has any other ideas will be a bonus.

4drftn

skybarge Community Regular

skybarge

Posted
Posted

yeah sh@un is right, no gains to be had

it was probably a radiator/cooler combo at the rear because they'd run out of room at the front, the fans were probably just to push air through because it'd be lacking the wind you get from the front of the car

rev210 Grand Master

rev210

Posted
Posted

spend a little time making some foam air guides (or a nice metal guide if you have the skills with the material) for between the intercooler and radiator so the air doesn't 'spill' making the standard fan setup work more efficiently.

4drftn Experienced

4drftn

Posted
  • Author
Posted

sorry i may have not explained myself well, but i am already running viscous fan+12inch cooling fan infont of my radiator pushing air into it...

now... what im actually trying to find out is benifits from having a pulling fan on the back of an intercooler or fmic, in other words trying to get more air and cooler air into intercooler to maybe produce more power etc.

sorry for the confusion

4drftn

W0rp3D Grand Master

W0rp3D

Posted
Posted

i have seen this done, it was set up to come on when the intake temps go up to a certain temp, only really usefull and low speeds or stopped when there is not enough air flow over the fmic.

GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Id start with measuring your actual intake temps, take a common, do some plots over time, otherwise your just faping into a carrot cake.

Water spray while standstill i find isn't soo effective (well not as much as Id want it to be) The water itself isn't cooling the IC, its the latent heat thats absorbed in the state change from liquid to gas (evaporation) Hence, without the air moving over it, kinda hindered.

Thermos and a water setup could work well me thinks, if you really need to prevent heat soak while standstill.

If state change heat absorption is your game, iv always been interested in those C02 IC sprayers. C02 is dirt cheap, and in 30s can have a ice covered IC when dead still. I had almost ordered one, but a change meant it wouldn't work with my setup.

Thinking aloud :/

EDIT: After getting some base figures, first try air guides first as mentioned - a must.

Edited by GeeTR
R338OY Veteran

R338OY

Posted
Posted

When the intercooler is working hardest is when you're in motion- meaning there's plenty of airflow already over the cooler.

water-->air intercooler would be the best upgrade, esp. for heatsoak issues, but it's not exactly a simple bolt-on upgrade like a regular fmic.

Airguides ftw, maximise airflow to the cooler. In the meantime you might want to put a fan behind the fmic and do some tests with a thermometer-type tool and see if the fan makes a difference to charge temps and cooler heatsoak temps.

GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Air -> Water IC's (what i think you meant) still needs a heat exchanger (rad like)

People use thermos on those heat exchangers... thermos on a Air -> Air should work just well maybe?

Try it, let us know :/

Edited by GeeTR
4drftn Experienced

4drftn

Posted
  • Author
Posted

i think i most definatly will give it a go... aswell as air guides for maximum gain. does anyone have any pictures of an airguide they have customly made for there setup?

also how would i go about measuring the air intake temp/amount? will it be in ECU data?, i have a microtech LT-8 ECU, should i be able to access that sort of info?

cheers

black33gtst Community Regular

black33gtst

Posted
Posted

Always wondered if 12 volt peltiers would be the go. Peltier runs on electricity gets hot one side and very cold other side smaller ones can cool cpu in computer so i imagine larger ones could be utilised in aiding to cool an fmic? just a thought

djr81 Grand Master

djr81

Posted
Posted

The short answer to this is : don't waste your time.

A properly ducted intercooler will take advantage of the high pressure built up at the front of the car when travelling at any reasonable speed.

This pressure build up will be more than any fan is capable of providing.

Hence installing such a fan is a waste of time.

But:

If your car is a GT-R it already has a fan installed to push air through the radiator. You can hear it click on when the car is sat idling on a hot day.

It is far, far easier to plumb in some water misting to spray the intercooler when the inlet temps go above a certain threshold. Why don't you look into that?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      R33 GTR running -9 with no tune

      By joshuaho96 · Posted

      Yeah I suspect even if you hold airmass per cycle/cylinder constant if you get too far away from stock you're still going to have problems running the factory tune within the bounds of the factory load scale. Cams, different displacement/rod ratio, etc. I'm just lucky that the GTIII-SS with wastegate boost + CA compliance cats is pretty much equivalent to stock turbos. When I have actual space I can finally get it tuned and modify the fuel system for flex fuel to 100% handle any detonation concerns when cranking the boost to whatever those dinky turbos can put out.
    • The Bogan
      NC MX5

      By The Bogan · Posted

      I would say no, why, because my daughter, who also lives in Goulburn, hasn't recommended us going there Pity, as we miss all the German joints around in Sydney, actually, the restaurants are the only thing I really miss about Sydney, and a special mention to Ishibanboshi at Bondi Junction, their Kara-age Don is heart cloggingly deliciousness (always added a special boiled egg...or 2) 😋 
    • GTSBoy
      NC MX5

      By GTSBoy · Posted

      Does that German restaurant still exist in the old place out the NW end of Goulburn? When I say "out the NW end of"...I am really being vague. It was 1997 when I was last there, and the only point of reference I can recall is that it was on the opposite side of the main drag from the big merino. And when I say "opposite side of the main drag", I don't mean "on the main drag". It was either a couple of streets back from there, or might have even been out in the sticks a bit further. Was an old farm building or mill or somesuch. And when I say "the big merino" I might actually be thinking of a completely different part of town, because I just looked on maps and the big bugger is not where I remembered him to be! The food was good, consisting largely of various German mystery-meat sausage/loaf things and kartofflen.
    • GTSBoy
      R33 GTR running -9 with no tune

      By GTSBoy · Posted

      So while the second sentence is completely correct and the whole point of the conversation, the first sentence bears consideration. If this bloke is just hoping to throw big turbos on and drive it around, because there are no helpful facilities at all in his tropical paradise** then he likely has zero chance of even knowing what the TP is on the last column in the stock maps, let alone know whether the ECU is operating anywhere near it or past it. So the point is very very moot. And, per what I said before, at stock boost on those turbos, you may well be off the end of the map. **I'm just back from Vanuatu, so I know exactly what small Pacific nations can be like wrt paradise without requisite facilities. But it's not even that simple. I put a high flow on my car and had to drive it around with a proper tune because of the lack of opportunity*** to put the bigger AFM and injectors into it to allow it to be tuned. I had to turn the boost down to less than I had before, and back off the boost controller's ramp, because it was exploring parts of the map that it didn't drive in before, and really couldn't access for tuning on the dyno either, and so was pinging. It was still well within the last column, because when I first**** set up the Nistune on the Neo I rescaled all axes of the maps to give some more space to explore. ***Family dyno was broken ****This was 13 years ago, and the TIM thing wasn't a thing then and so TP would definitely grow when pushing past the stock tune's limits.
    • joshuaho96
      Squeaking clutch/throw out bearing

      By joshuaho96 · Posted

      Yep, this bit another local owner. I caught it before putting the transmission back into the car, what I noticed was the pressure plate fingers weren't flat and even. It's more obvious with the pull style clutch because the throwout bearing ring was visibly not flat once everything is put together. Nismo should really update their instructions to call out this specific detail. I'm not even sure the clutch as-shipped orients everything properly.
×
×
  • Create New...