R5FORD

iTrader: (1)

how does water injection actully work? whats the idea of it

cheers

percybigun

it cools the charge temperature, and if you run it 50/50 with methanol the methanol raises the octane rating aswell.

i have it on my supercharged zetec, but only because its non-intercooled (and an intercooler cant be fitted)

R5FORD

iTrader: (1)

is there nay benefit to having it with a rs500 style intercooler on a escos?

GARETH T

its changes the chemical reaction of the burn, slowing down flame progression!

percybigun

its supposed to be a last resort if you have got extreme charge temps.

better to get a bigger intercooler instead IMHO.

some people use it and have it set to only kick in at high IAT's and high boost levels, which helps in hot weather and when you've been stuck in traffic.

R5FORD

iTrader: (1)

ahh may help me then during summer over here it gets to 40+ degrees..

isit something i can fit myself? do i need a chip or anything written?

Turbocabbie

The main function of water injection is to suppress detonation caused by
high temperature and pressure developed within the combustion chamber when
the effective compression ratio has been taken beyond the auto-ignition point
by either a turbo or a supercharger. Water, with its high latent heat content,
is extremely effective for controlling not only the onset of detonation but also the
production of oxides of nitrogen in the modern leanburn engines.

Turbocabbie

my ecu is mapped for the water injection to work at a specific ACT and boost pressure although you can get separate mappable systems.

I believe the SECS monitor can also run a water injection system if memory serves me right

percybigun

it is quite easy to fit water injection yourself yes.

i got this system from america by "Snow Performance", its effectively the same type of kit as Aquamist but half the price:

http://focus.c-f-m.com/index.asp?Pag...ROD&ProdID=908

there is other add-on accessories you can buy for their kit aswell.

scoooby slayer

iTrader: (4)

secs runs water injection on mine cuts in at 44 c and 12.5 psi must see both values to cut in. ive got a huge intercooler but water inj still runs on really hot days, it blew a pipe of the water inj bout a week ago and temp reached 70 c so it definitely does its job when working temps never exceed 48 ish

Turbocabbie

This is the kit I have, think Aquamist is pretty good, mine is mapped to a Cossie ECU

http://www.aquamist.co.uk/cp/sys1/sys1a.html

cossiegreg1

how much is the aquamist kit?

R5FORD

iTrader: (1)

so really i can setup water injection myself with a secs monitor?

Turbocabbie

http://www.aquamist.co.uk/sl/plist/frm-4.html

its a great piece of kit imho

Mark_1

i bought a nozzle from racetuners costing 5£ or something, and im using the waterpumps from the headlight cleaners.
And im going to the scrappers to find a suitable water tank.
as long as you have a ecu that supports water injection, its not necessary to have the expensive aquamist kit imo.

Turbocabbie

Im curious regarding the amount of pressure the head light pumps can supply and what is the life expectancy of the pump especially if you are mixing with alcohol

Mark_1

the water injection kit fitted to early t35 escorts consists of two serial connected headlight pumps, and should provide sufficient pressure.
why would you put alcohol through these pumps?

ricky

iTrader: (2)

where do people get methanol from would like to know

Turbocabbie

If you want high quality methanol check out local model shops
I generally get mine from the following URL, you have to create an account but the delivery is pretty good, just state its use and they are no problem.

http://www.mistralni.co.uk

Turbocabbie

My water injection system produces water pressure in excess of six bars, It is vitally important to atomise the water properly so each cylinder receives the same amount of water as well as performing cooling in the inlet tract, I fail to see how a motor made to squirt water at a headlamp can overcome the big boost cars some cars make and still achieve this, I simply do not think it produces enough pressure as I can put my finger over my headlamp washer and stop it, the very fact that two are connected in order to increase the pressure suggests to me that its trying to make the best out of a bad situation.
Methanol itself has a octane number of 113. Not only does it improve your fuel quality, it will also give you a better intercooling effect in the inlet, and on top of this it also stops the water from freezing

percybigun

i get my methanol from www.stratlab.co.uk and they deliver aswell. you have to ring up to place an order.

best to explain that its for use in a car in case they think your a druggy or alco or something.

i'll take a look at that Mistral site see if its any cheaper!

personally i wouldnt use a DIY W.I. kit, the kit i got has the right pump pressure, and the place i bought it from sized the nozzle specifically to my application. doing it DIY would be a bit hit and miss.

Turbocabbie

out of curiosity percybigun, where have you mounted your water tank ?

percybigun

mine is in the engine bay at the moment, but its getting a bit hot (which kinda defeats the object). i've just got a much bigger tank and am gonna mount it in the boot.

i was gonna put it where the battery was (when i have relocated it) but its still gonna pick up some heat from the engine.

Turbocabbie

mines in the engine bay at the moment, not sure in the temps it gets could be interesting to find out

Mark_1

it would be interresting to measure the pressure two headlight pumps produce.
its definatly not 6bars, but they should produce enough pressure to work in a mildly tuned track day car.
regarding nozzle sizes... racetuners provided med with one based on my engine spec.

the best alternative is to have proper pumps, but the headlight pumps should be a good economic alternative

percybigun

you can get a basic WMI kit here for about £140-150 so for that money its hardly worth trying to cobble something together DIY IMHO

http://focus.c-f-m.com/index.asp?Pag...ROD&ProdID=906