refridgerated air huh?

like a 12V camping fridge?

i've been wanting to build one of these for a while now.

i might just do it now...

1200coupe...... the system I am about to install uses Electronic Variable Control unit to meter the amount of water injected.You set the start point for injection to begin (say 5psi) and where you want maximum injetion (say12psi). The controller then incease the amount of water injected on linear basis between these two parameters.

There are two systems available - one which connects to a Manifold vacuum/pressure line and one which reads from a MAF (0-5v). The MAF system is great with smaller turbos wich spool up super quick and with any positive displacement superchargers.

The Kits I have ordered have arrived in the country, I am just waiting for them to clear customs at the moment - Hopefully I wil get them before the weekend.

in my opinion, hmmm, not a great idea really, seems quite risky and not very exact (probably doesnt hold much weight coming from an a15ett builder but anyway )

but point of my post was to direct people to the autospeed site where they have some cool info on water injection and water spray explaining the setup required for each and theory etc etc

Autospeed

search "water injection" and "water spray"
be sure to search "all articles" not just the default feature articles

i was planing to run a home made system on a 1200 ute with an a15 turbo the bigest problem is finding something to spray the water

Baz from DatSport in Adelaide swears by water injection. He too said that massive intercoolers can be replaced by a good water injection system.

I'll be looking into it, as I only have a small intercooler due to lack of space, and love of grille.

Well, I've had heaps of experience running methonal, just not in Datto. My previous hobby was flying RC model aeroplanes and they use methonal as the fuel base.

"Metho" is a cheap brew of methonal and ethanol (mostly ethanol). Its no where near as good as pure methanol as a fuel and I'm pretty sure is heavier and denser. So don't use metho as a substitue.

You can purchase methanol at most fuel supply depots. Ring around. I haven't bought it for a couple years now but used to regulary fill my 20L drums for under $25. Yep, thats the same price as unleaded on some days!

I was suprised to hear Datman55 mention is was extremely corrosive. I can't say it isn't because I don't know for sure, but a quick look at my collection of motors would indicate otherwise. I have never seen any form of corrosion on one of these model engines. They are mostly aluminimum, with bronze or brass slipper bearings, steel valves and roller bearings for cams. Some parts are chromed, but only for show.

The 4-strokes produce 1.5 to 2.0 HP for every cubic inch displacement.

There are also 2-strokes, wankels (rotaries) and supercharged four-strokes. I think fuel injection is becoming the in thing too now.

yep, i play with model planes too.also been involved with a top doorslamer running 500 inch engine supercharged and runs methanol. Yes it is corrosive.we had to clean the injector hat and lines after a meeting. we used crc to coat the blower vanes and inside the hat and reverse flush the pump with good old petrol and sealed it all up till the next time we took it out to play.think we were paying around 180$ for a 205 ltr drum, so its not all that expensive.

i have a homemade water injection...

i'm using the wiper switch to squirt water mist to the carb through the air filter. one major difference is that the engine runs smoother on hot days (as smooth as during the night). I'm living in a tropical country with temp variance from 24C at night to 36C in the afternoon.

other than that i'm gaining extra 2mpg. taking note that i ONLY squirt when i go gear shift during acceleration. i'm using 1.5L of water to every 40L of petrols.

Also the engine runs smoother in high revs with the water squirting.

Currently i'm using a busted hitachi DCH306 carb. planing to change it. can't get any webers in my country :(

A cheaper alternative for detonation resistance, is to add an extra injector (or two) spraying in toluene. Use a dedicated EFI fuel pump for the system.

Control it with either a fuel only ECU, Hobb's switch, or cam operated micro switch depending on budget and performance requirements and away you go. Water is for fish to swim in

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please elaborate...?