more intercooler power

[Dominic]

This question needs some physics knowledge;

1. the cooler the air the more power

2. a fmic allows more surface to attract cold air than TMIC and no heat sink

3. water sprayed onto a TMIC causes a physical reaction Ie water evaporation reduces the temp on the IC.

thus with this knowledge has anyone tried a water spray on to the FMIC to see if it makes a large difference. The rapidity of the evaporation should make it more beneficial than it is to a TMIC.

From a "text book" point of view it should work as well as a more efficient IC but at a lower cost.

But other than getting the spray on to a vertical surface what other faults are there in my thinking.

[Sydneykid]

It is widely used on drag cars, as well as some production turbo model cars - Mitsubishi Lancers Evos VII - VIII use intercooler sprays

S of S

[butthead]

How about putting the air con pipe into the intercooler

[Roy]

My thoughts are water sprays arent too bad an idea. If it can be done cheaply that is.

Things i would consider are the additional weight of the setup, and the switching of the spray. Do you use it at lights, under full throttle, only when on full boost, at a preset temp?

My thoughts are that if your FMIC is adequately sized in the 1st place then there is little to be gained...

[EnricoPalazzo]

Well its always nicer to get the air as cool as possible so it cant hurt i supose.

[T0nyGTSt]

The problem is that you wanna be spraying BEFORE you jump on the boost.

If your spraying WHILE you're on the boil, it's already too late.

I assume you would have to activate before you boost. With that additional workload for you, I doubt it's worth the weight in water.

T.

[dan_the_man]

http://www.autospeed.com.au/cms/A_0527/art...?popularArticle

[silverskyline]

water sprays for intercoolers have been around for a long time, there are kits you can by for 150 i think, its the same as your window washer, except with a nozzle that sprays, instead of shooting jets

[Guilt-Toy]

I run water injection on my R33... I spray water/metho into the turbo blades.

Brings knocking level down heaps on my PFC knock ind

[EnricoPalazzo]

Doesnt that loose power thou to a certain extent? Also please tell me its not a hose with a pin prick in it..........

[WazR32GTSt]

dominic,

well in therory i think this would make a difference, but in the real world the actual gain would probably be minimal. i think this would be a better idea for those of us with teh stock intercooler.

The 1kW you might gain is not even worth the time spent on installing i would say.

[b2barker]

Like some others said there doesn't seem to be much benefit for street use. This is because if you are only on boost for short periods the IC works more like a heat sink than a radiator.

It absorbs heat from the inside while you boost, and if you back off it put the heat back in the off boost air. It spreads the heat out if you like. Only if you boost for extended periods (track or high speed) does the cooler warm up enough to dissipate to air, where spraying would help.

[Skyrine-Dave]

i give my FMIC a splat with the hose before i go out sometimes... who cares if it works or not.. i just feel cool doin it

[Guest Robo's]

Originally posted by Skyrine-Dave

i give my FMIC a splat with the hose before i go out sometimes... who cares if it works or not.. i just feel cool doin it

I'd be doing that too:D

[4door_Sleeper]

I'm having trouble believing some of what I'm reading here. Have some of you lot passed year 10 physics yet ;-)

1. "The 1kW you might gain is not even worth the time spent on installing i would say." - 1KG - I drop turds heavier than that and I am yet to in forums such as "12 second skyline" the importance of the driver taking a crap prior to hitting the strip. Only jockies and F1 teams worry about 1KG. Using this logic why bother installng a FMIC that weighs more than the cut down factory option, and as for larger turbos, do i need to worry about the weight they add?

2. If the additional weight translates to more power at a rate better than the cars original power to weight ratio its got to be worth it. ie a 1000kg car wit 100rwkw then adding 1Kg you need to increase the rwkw by 0.1 to maintain the ratio (yes its a simplified example and i am aware of the mathematical floor in these numbers bet it demonstrates my point)

3. Whilst there is some merrit in the argument that in street driving the cooling benifits are not occuring when needed, have you considered the fact that the water will cool down the "heatsink" faster and hence the efficiency of the FMIC will be available sooner. And in addition any increase in the cooling efficiency (at any time whilst running) is still benificial.

anyway thats my 2c for what its worth.

[Roy]

Oh, Physics, thats apples falling out of trees isnt it.

On paper what volume of 25deg C water do you think you would have to spray over an intercooler (and what area) core to see a 1 deg C drop in inlet air. Im guessing its more then most reservoirs can provide.

Thats said it will help disipate heat from the intercooler which is a good thing, but just how much heat transfer then takes place at a premium over the ambient air is questionable as far as improving performance.

The car really has to be moving and the water atomised well and spread over the entire core if its hoped to work.

1kg ? thats only a full 1L water reservoir. My guess the installed system would weigh more like 4-5kgs. Still not a lot of weight, but why carry an extra jack, or space saver tyre in the car.

My thoughts are if your a DIY person then give it a go, it cant hurt, but if you start to spend hundreds of dollars i would question its benefit.

Water injection on the other hand...can provide a much more tangible increase in performance.

[Guest INASNT]

Originally posted by butthead

How about putting the air con pipe into the intercooler

Using the aircon will just rob more power.

I think ULA32 has water spray on his R32GTR and the only additional power he has seen is about 5rwkw with the spray on during a dyno run.

Not worth the effort i recon.

If you really wanted to cool your cooler down, hook a chemical fire extinguisher to it and spray it. That will lower the coolers temperature to below 0 degrees.

[Guest RedLineGTR]

"If you really wanted to cool your cooler down, hook a chemical fire extinguisher to it and spray it. That will lower the coolers temperature to below 0 degrees"

Good for runs down the quarter mile...but dont think ya wanna stop every 10min while driving.heheh

[EnricoPalazzo]

4DoorSleeper: When u ran the 12 sec pass, did u have FMIC?

[WazR32GTSt]

Originally posted by 4door_Sleeper

I'm having trouble believing some of what I'm reading here. Have some of you lot passed year 10 physics yet ;-)

1. "The 1kW you might gain is not even worth the time spent on installing i would say." - 1KG - I drop turds heavier than that and I am yet to in forums such as "12 second skyline" the importance of the driver taking a crap prior to hitting the strip. Only jockies and F1 teams worry about 1KG. Using this logic why bother installng a FMIC that weighs more than the cut down factory option, and as for larger turbos, do i need to worry about the weight they add?

2. If the additional weight translates to more power at a rate better than the cars original power to weight ratio its got to be worth it. ie a 1000kg car wit 100rwkw then adding 1Kg you need to increase the rwkw by 0.1 to maintain the ratio (yes its a simplified example and i am aware of the mathematical floor in these numbers bet it demonstrates my point)

3. Whilst there is some merrit in the argument that in street driving the cooling benifits are not occuring when needed, have you considered the fact that the water will cool down the "heatsink" faster and hence the efficiency of the FMIC will be available sooner. And in addition any increase in the cooling efficiency (at any time whilst running) is still benificial.

anyway thats my 2c for what its worth.

mate are you broken??

1) yes i have done year 10 physics, in fact i have done university physics and will have a degree in biomedical science in a few weeks so how's that for a science background?

2) why quote my post about minimal power gain, then go on bagging about a weight gain which i did not nemtion anything about? in fact i said that it would make a difference in theory (which you said in your point #3) so the fact that you questioned my intelligence makes you the dumb one. you can spray tll your face goes blue but it ain't gonna make much difference on the street.

Cheers