water injection nozle size

[asp]

what nozle size are you guys useing,also where have you mount\'d the injector,

[kev-yorks]

All depends on what power figure your after as regards nozzle size theres a couple of sites got calculators if you do a search. Mines a twin set up so i\'m injecting one before and one after the intercooler.
Kevin

[stuart wizy]

kev, is that the water injection you bought of me mate?
sods law, now i need one!!  :mad:

[kev-yorks]

It is Stu only got the first stage running at the moment had to wait for a couple of weeks for larger nozzles as they where noware near big enough for what i\'m running. Once the roads dry out again i\'ll be carrying on with the mapping, opening up the second stage and cranking up the boost some more.
Kevin

[asp]

All depends on what power figure your after as regards nozzle size theres a couple of sites got calculators if you do a search. Mines a twin set up so i\'m injecting one before and one after the intercooler.
Kevin

will that cool the ic more having it before.

[stuart wizy]

good lad :cool
does it work well then kev? how much as it reduced your intake temps?

asp try //www.coolingmist.com jet for nozzles. on the site somewhere they have a scale - hp related to nozzle size
they are good to deal with and deliver within 5 working days, not bad from the states, jets are peanuts on there by the way

[kev-yorks]

There\'s two schools of thought Kriss with the injection point close to the throttle body helps cool the combustion chamber better. Close to the turbo helps with the inlet air temps. Pre turbo is very good for temps but if it doesn\'t atomise properly its bye bye turbo blades hence why not many people inject pre turbo. With the twin set up pre and after turbo should be getting the best of both worlds. I can get some pics tomorrow if you want.
Regards Kevin

[kev-yorks]

Stuart never really had any issues with temps its more for that bit of safety as i intend to run quite a bit of boost so long as the driveline can take it.
Kevin

[travellinbob]

I have seen set ups that drill and tap into the inlet compressor wheel of the turbo and fit a WI injector there. Anyone else see this? Or is it what you were talking about Kev?
  cheers, michael.

[sdminus]

asp. The amount of water will depend on how much fuel and what the air temp is at the point of injection. Remember if you add water into the mix you will need to counter act it in the map to get best results. If not you will be washing power down the exhaust.
If you add to much water it will have a similar effect as adding too much fuel. Water has 3 times the latent heat capacity of petrol.

Scott

[asp]

stu thats where i got it from,i didnt tel him what size i wanted,

kev pics would be good cheers,

[kev-yorks]

That\'s the pre turbo set up i was on about michael trouble is if anything goes wrong with the nozzle its bye bye blades. Having said that rice racing in Aus is having a lot of success doing just that with a mechanical (boost pressure) system that injects pre turbo. Not sure exactly on the set up he uses but i think the gist of it is that boost pressure is vented into the water storage tank which in turn forces the water into the injector. One advantage of this would be no pumps to break down.
Kevin

[sdminus]

I dont think RICE\'s current set up uses that anymore. He uses 2x aquamist racing pumps etc. The key to pre turbo WI is the atomisation of the water droplets. If the droplets are to large then after they hit the nut of the compressor the water will run down the impellor and take lumps off.

I believe the aqua mist jets are the best atomisation but coolingmist sells the smallest jets 0.5 gph

Scott

[asp]

asp. The amount of water will depend on how much fuel and what the air temp is at the point of injection. Remember if you add water into the mix you will need to counter act it in the map to get best results. If not you will be washing power down the exhaust.
If you add to much water it will have a similar effect as adding too much fuel. Water has 3 times the latent heat capacity of petrol.

Scott

im not going to tune it,so really i just want some one to say this size is good for 350hp this one for 400hp and so on

[sdminus]

How much fuel are you gonna run at peak duty and do u have any idea of average inlet temp

Scott