water injection?
#1 _uglybob_
Posted 28 July 2006 - 03:50 PM
so is that crap or what?
#2
Posted 28 July 2006 - 03:52 PM
Not crap, water injection is a genuine mod and i'll leave it to those more technical than i to explain it.
Welby
#3
Posted 28 July 2006 - 04:04 PM
Some units were basic ecu controlled, some used a pump, others relied on just vacuum.
These are still around and some are pretty sophisticated..Water Injection Unit
#4 _uglybob_
Posted 28 July 2006 - 04:59 PM
sorri about all the bloody posts i didnt think it was working. can i delete them?
stupid me
#5 _uglybob_
Posted 28 July 2006 - 05:02 PM
#6 _big chris_
Posted 28 July 2006 - 05:27 PM
Dont think is crap,
water or water methanol is used to stop detonation in high compression ratio engines.
Found some information on this topic,
and have heard of it before,
but had never really researched it.
A brief History:
Water injection was evaluated scientifically in the 1930�s by H. Ricardo who demonstrated that one can basically double the power output of an engine using water/methanol.
The first widespread use was during WWII on supercharged and turbocharged aircraft. In 1942, the German Luftwaffe increased the horsepower of the Focke-Wulf 190D-9 fighter aircraft from 1776HP to 2240HP using 50/50% water/methanol injection.
The allies soon followed by fitting the P51 Mustang and other high performance aircraft with water/methanol injection.
Following the war, the turboprop aircraft industry used water/methanol injection and called it the �automatic power reserve system (APR)� for use in hot or high altitude take off.
It surfaced again in the 60�s when GM used a system on the OEM turbo Corvair. It was used effectively in Formula 1 before being banned for adding too much power.
I found a few sites that have information.
http://website.lineo...c/mannject.html
http://www.rallycars...rInjection.html
http://autospeed.dri...intArticle.html
Check it out,
Cheers
Chris
#7 _uglybob_
Posted 28 July 2006 - 05:33 PM
#8
Posted 28 July 2006 - 10:55 PM
I Merged all the topics into this one.. So appologies if it reads a littel funny.
Unfortunately 4 people responded to 4 different topics.. so i had to make it all one!
Cheers!
#9 _73LJWhiteSL_
Posted 29 July 2006 - 12:54 PM
To get the benefit you really need to advance the timing however. From what i understand the water simply means you can advance the timing further without pinging... therefore gaining extra power from more advanced timing.
Do a search on google and see what you can turn up.
Steve
#10
Posted 29 July 2006 - 03:33 PM
into manifold after turbo. running in boat with 16 lb boost.
Don't know if it made any difference but motor lasted 3 seasons I raced turbo.
#11 _dave720gtr_
Posted 29 July 2006 - 07:07 PM
150 psi pump quick release fittings
#12
Posted 29 July 2006 - 07:16 PM
#13 _chevy_253_torana_
Posted 29 July 2006 - 09:14 PM
what sort of engines can this be done to ?
#14
Posted 29 July 2006 - 11:09 PM
How would I go about setting up water injection on a 202 with triple dellortoes, It is a 12 port so i'd need 6 injectors into the manifold. Are there kits available for this application and if so what would i be looking at cost wise. As for perfonce issues im unable to run any more than 3 degrees advanced with out it pinging off it's nut, How much more advance would this allow me to run, up to 12 degrees???
Cheers
Les
#15 _dave720gtr_
Posted 30 July 2006 - 01:32 AM
with is about $290 aussi dollers to your door in 6/ 10 day us air postage!
it pumps 150 psi throught diffrent sized jets to suit your hp and engine needs
there activated by boost press switch but if you are using one on a norm assp engine he makes vac switchers two triger it. in a v8 you would mount the injector
in the side of a 2inch holley spacer plate but you could spray it in over the top of the carbi two, you can run more then one injector
and for your webers strait in to the runers on the manifold the injectors come in sizers from 60cc to 1000cc
oh and tiny i am mounting mine in just after the turbo near the hose that goes to the strata 5 inlet manifold
cheers all
Edited by dave720gtr, 30 July 2006 - 01:44 AM.
#16 _coupe202_
Posted 30 July 2006 - 02:12 PM
dave720gtr what carby are you using on your turbo setup.
best spot to fit the nozzle is in between the carby and turbo and dont use straight water.
#17 _dave720gtr_
Posted 30 July 2006 - 07:35 PM
as for spraying Alcohol in before the turbo ?? ice is formed when you
run alcohol through a draw through set up . mixing 25% 75% water may be all
right before , you are right you could build one cheaper , maby useing a
cold start injector and a high press fuel pump of a old volvo or some thing
if you got the time to spend looking around wrecking yards
cheers
#18
Posted 30 July 2006 - 08:10 PM
problem. couldn't get enough fuel into carby under high boost ,sucked it out faster than it went in, then one day chatting with another customer at carby place he had sprint car and he drilled 1/8 bit through seat and used holley soft tip needle, I did same & went like rocket.
the best race motors back then had fuel injection with 2 sets of injectors, 1 facing
forward & 1 backward.
I used CD175 on road cars. water injection great under heavy load uphill no pinging lots grunt 9-12 lb boost.
#19
Posted 30 July 2006 - 08:11 PM
told me it failed, error message
Edited by limo, 30 July 2006 - 08:13 PM.
#20 _coupe202_
Posted 30 July 2006 - 09:09 PM
i had the same problems with the weber fuel bowl running out of fuel so i just went for a quady. and straight methanol worked the best.
the problem with running the water injection after the turbo is that the air temperature is going to be to hot. and will not have enough time to cool the air before it hits the cylinders.
#21
Posted 30 July 2006 - 09:20 PM
Cheers.
#22 _mike_nofx_
Posted 30 July 2006 - 11:53 PM
The manifold that connects the twin SU's to the turbo sometimes gets cold enough that it builds up condensation. I use water only.
Its a washer bottle and pump, which is activated by boost, you can adjust how much boost is needed before it starts the pump up. I have mine set up so it comes on at almost 0 boost...
I think i have the pump set up to spray 150ml a minute. Im not sure if thats enough or too much... anyone help?
#23 _dave720gtr_
Posted 31 July 2006 - 04:38 PM
and it works realy well if you set it up the way coup202 said !
on turbo draw through or supercharged engine ,
But the washer pump ?there not made to handle alcohol. is no good for spraying in after the turbo ,
Dosnt pump the psi . and after some reserch my thourghts are theres no way that a washer pump would perform as well as one of these new kits with a 150psi
you would have to be crazy to inject it before the turbo, + you can run 100%
alcohol with out harming the turbo , thay dont recomend this . and on a Injected turbo car be cool" say spray it in to the pipe exiting the intercooler.
cheers
#24
Posted 31 July 2006 - 05:26 PM
http://www.ras.com.a...VS_Coupe202.mpg
#25 _coupe202_
Posted 31 July 2006 - 06:30 PM
also running water only it will chip and damage the comp wheel
the only reason i say this becauce i had a 202 with carby and runnning 18 to 20 psi and making the methanol came in about 10 to 12 psi.
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