i was thinking of using a windscreen washer pump to spray a fine mist of water over the intercooler to cool it down. the way i was thinking of doing it was to have the spray activated by either a microswitch under the throttle pedal that activated it at full throttle or have it activated by a push button on the dash board. the only problem i could think of was running out of water to quickly so i though is the spray was only sprayed for a couple of seconds when it was triggered then this would make the water last longer, what are peoples thoughts on this?
Russ is doing this already using the high pressure jets taken from a Calibra headlamp wash system.
He uses a swithc on the dash and has mounted the larger water bottle in the inner wing that you get on Cav/Calibras with aircon/washer jet system.
Not sure how this would fit on an Astra but you could always fit a second water tank somewhere ??
Just remember that water quantity sprayed is not quite as important as getting a very fine mist. When you use a fine mist you get the same cooling amount with MUCH less water than if you had just a jet blasting lots of water in a thick spray.
Something to bear in mind where space and water carrying ability is at a premium.
Just be prepared for ppl to "warn" you that your car is leaking coolant.... Russ got this a few times while lining up at the Pod lmao lmao
Nick , I read somewhere that the intercooler in effect is a big heatsink and heat transfer isn't instant. So intercooler spray needs to work when the intercooler itself has reached a certain temperture and not when you are at WOT. Because the heat transfer is not instant having water spray at WOT is a little bit too late. You need some sort of way to have the spray start spraying when your charge temp has reached a certain temp.
Or I could be just talking a lot of poo . I'm not too sure on this theory but heat transfer cannot be instant but lag time is proberly only a few seconds. But you are only at WOT for a few seconds on normal road use.
I've got mine set on a 15psi pressure switch so it comes in with the 5th injector I have fitted too - no need to press any buttons and it comes in when you really need it. I have got all the kit for the under wing tank except spray nozzles and pump (i.e tank, hosing, clips & relay - all brand new if you are interested?). I couldn't run with an under wing tank as my charge cooler pump is under there.
imcsherry, once the water spray is active how long does it take for the actual charge temp to go down?. I would of thought the spray come on when a certain charge temp was reached was a better way of doing it, but then again I'm only speaking from knowledge I've read up on .
man-chun i am running a frontera td fmic and a courtneay charge cooler i think if you look at the pic you cau see the charge cooler rad above the intercooler also i was thinking if you had the spray set to spray in 2 sec bursts then if you were really driving you car hard it would spray every time you change gear
Nick , nice setup . I would of thought your current setup is more than enough to keep the charge temps down. What temps are you running atm?. Maybe try running some wetter water type liquid in your charge cooler system, just I thought the intercooler spray is a pain in the butt to fit and get working correctly . But then I'm lazy hehe.
Nick, does you're charge cooler pump not run on/off from a pressure switch ? you could use that. I'd imagine the jet from a water injection system would give better results than a washer get (get a mist rather than a jet)
Mine is controlled by a pressure switch so pumps when I'm above 0 bar/psi, you can get them from maplins for a couple of quid, saves forgetting to switch it on/off and is probly the best way for your mist spray.
I was thinking about doing putting jets in my bumper as well.I was thinking about getting another windscreen washer bottle and mounting it in the boot,For a switch i am going to get a wiper stalk from a cavy hatchback and wire the spray to the rear wash wipe connector on the stalk so i just have to push it away from me to operate it.
redxii- tell me more about these switches as mine is on the dash board and if you forget to turn it off i get at flat battery also cavy dont you have any where you can fit the bottle in the engine bay rather running water tubes through your car?
Nick, the switch I have has a vacum hose in on one side and three electrical on the other, one is live in, one of the other two are live out depending on whether it senses a vacum or pressure, you connect the pump to the connection thats live under pressure, does that make sense ? anyway the vacum goes to a T-piece on one of the lines from the manifold just like a boost guage would. My switch is made by 3M.
yeah i think i understand so when ever you put your foot and the boost gauge shows pressure then the pump starts dosen't this cause problems when you are sat in traffic on idle and the boost guage is in vacum
Shouldn't really suffer from any charge temp probs unless you're running on boost, under normal driving the temps a lot lower than when you're under heavy boost which is when the temp needs controlling better than the stanard ic can handle.
If I had a digi camera I'd take a pic but I have to borrow it from my dad, most people dump the cooler when they fit a FMIC especially as yours is f@ckin massive ! I know Richie did. Whats the car feel like with it, any noticeable improvement ? thinking of trying the TDi one myself.
im getting wheelspin at the top end of 2nd and 3rd on bumpy roads and i am only running 6psi which is less than standard but i am going tho wind up the boost on the actuator at the weekend i wouldn't mind finding what the charge temps with and without the charge cooler