Friday, September 15, 2006 - 06:37 pm, by: Ben Daniel(Lexustt)
Yesterday me and a mate went to look at an MR2 in wangara, when we got there to my surprise the guy also had a TT soarer. We got talkin about our cars etc and he was explaining to me how he has a small pump attached to the top of the wiper fluid bottle which runs a bit of hose along the front bar that sprays water out of 3 little jets straight onto the intercooler. I ducked down to check it out and he was spot on, could see those little sprayers that people have for their garden reticulation. I was quite interested in the setup even more so when he told me he got a dyno proven 20rwhp out of it. Has anyone ever seen/used one of these set ups before. For 20rwhp it would be well worth looking into.
Friday, September 15, 2006 - 07:35 pm, by: Daniel Clarke(Dieseltrain)
Yoy have to remember that even a FMIC on a Dyno, WONT show a great deal of HP gain, as there is minimal Airflow from high speed driving being simulated upon it.
While 20rwhp might have been gained on the dyno, I would hate to be going down the quarter mile or even on a race track at over 140 km/h and the water feed pipe pops off and sprays clean water underneath your car and rear tyres.....
Specially when pushing some good HP... I would rather have that 20hp less) Than have the chance to have fluid go under a rear wheel and lose it into something. Maybe its just me though.
I doubt it would be that much in the real world as a car doing 120km/h( or up to and above 170km/h) would have much more efficient airflow into the FMIC to do its job properly, or even higher speeds. The air force at those speeds would diminish most kinds of forward facing water spray, thus making the nice even surface spray of water onto the FMIC, nothing but high speed dribbles into small sections of the FMIC.
I Know there are some guys using NItrous spray or the Cryogenic spray systems onto intercoolers, But those are mainly racing cars chasing every tenth of a second in race formats.
Friday, September 15, 2006 - 11:11 pm, by: Ben Socratous(Socrates)
If you want to cool down your inlet temperatures, plumb a noz injector into your fmic pipework just before the throttle body
I've seen a lot of things done to try and coo down the core, from water sprays, to CO2 jets to dry ice... the list is endless, and you'll be getting minimal gains, if any noticeable gains at all.
I think that he is yanking you crank a bit if he thinks that he is getting an extra 20 at the wheels just by spraying the core with a bit of water.
Saturday, September 16, 2006 - 05:04 pm, by: Paul Brockbank(Brockas)
The new Evo 8 MR's have a factory intercooler water spray. It doesn't seem to make that much of a difference, except it reduces heat soak so the car doesn't get slower the more you push it. Good for repeat runs.
Saturday, September 16, 2006 - 08:05 pm, by: Phil Gibson(Sciflyer)
Daniel the amount of water sprayed onto FMICs is not enough to be even remotely dangerous to the tyres also it is usually so finely atomised that it dissipates through the engine bay into the air anyway.
Yes a hose could come off and it could dump water in front of the wheels just like your oil filter could come off or a fuel line could rupture or a conrod could poke out of the block or....
Saturday, September 16, 2006 - 09:58 pm, by: Daniel Clarke(Dieseltrain)
Yeah, but those things were fitted from the factory Phil. SO they are designed to be on there for a long time.
Wow, i might not drive my car now knowing all these things could happen.. NOT!
BUT, the MR2 is a Mid engined car and does not have the intercooler in the front of the car. Therefor the water injection WOULD actually help this out as airflow is restricted to help with air speeds reducing the core temperature and aid in heat transfer from the core. I guess this would explain his 20rwhp gain. Especially as the Fan is forcing air into the front of the car, and seeing as the INtercoolers on an MR2 are on top of the engine in the middle of the car, ANY kind of DYNO fan will NOT help push any air into any kind of intercooler feed pipe for the CORE.This explains why an MR2 would have gained some rwhp from a water spray setup. It suffers from lack of air flow to cool the core down.
I suppose most Top mounted intercoolers would have some gains from Water sprays, but most guys OPT for some kind of FMIC upgrade where they can.
Would be a different story on a FMIC car. As the air speed is forced through the core, reducing the temprature and aiding in heat transfer from the core.
Not to mention the ANDRA officials wouldnt be too happy seeing a car coming up to stage with water spraying out of the front of it. ANy kind of fluids will get you removed from the track until it is resolved.
Saturday, September 16, 2006 - 11:12 pm, by: Daniel Trivuncevic(Madm0nk)
im pretty sure Dragan here on the forums has installed one to his soarer using a magna pump mounted above the spare wheel IF i remember well, but i wouldnt quote me on that!
Don Bagnall Moderator New Zealand I have WAY less Soarers than Hayden :-(
Sunday, September 17, 2006 - 02:46 pm, by: Callum Finch(Sigeneat)
I have spoken to a couple of mechanics about setting up water sprayers (in convo about other things) and the general consensus was that it is difficult and a little exy to setup for minimal improvements in power.
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