5 replies to this topic

[CHILL Gone DUTCH]

im planning on using water injection very soon and will eventually have a auto fail safe map and a higher ignition map (with the water injection ) mainly for cooling everything but will probably increase power and make the power last longer before the inlet temps go mad.

 

anyway i dont have any  knowledge with water injection so was wondering about how AFR would be affected and is there a way of working out what jet size for the water and also positioning of the jets 

 

any knowledge or experience on this will be appreciated and if there is anything else i should take into consideration please mention it.

 

here are my thoughts so far

 

was wanting to reduce the charged air before the Tmap sensor so temps could be monitored but really wanted to use 4 jets as close to the inlet of the engine as possible to keep the water injection spraying evenly in each   cylinder  .

or should i consider injecting pre laminovas ???

 

ive also heard of injecting pre supercharger around the throttle body area 

 

 

[CHILL Gone DUTCH]

Also worth mentioning its only water injection im going to be using and not water / meth injection as im not planning on increasing the power dramatically its mainly to cool the air intake temps 

[smiley]

Based on the dutch experience so far, pre TB, and pre laminova does nothing. So your assumption to go post laminova is ok. Not sure if you will be able fit 4 of them in the manifold. I think the only option is from the bottom of the manifold when it comes to location. Peter also ran wi on his rotrex setup. Did you ask him for his best practice?

[Mangham54]

Speak to Neil (Acidpopstar) and Crabash as they have installed a water kit on Neil's car.

[Exmantaa]

There should be a (some) topics about this.

And we're doing also going for post laminova spraying, only then the best location of the nozzle(s) is still to be decided. 

 

Normally you should have some distance for the spray-cone to develop an even mist in the intake tract, but that is less important with using 4x injectors. But a WI nozzle is not like a fuel injector, so getting an even distribution to all cylinders can be a problem. (also a bit crowded in that location with the fuel rail and injectors...  

 

 

[Exmantaa]

And to add, spraying after the TB means you deal with the engine vacuum, so you need a reliable shut-off valve near the nozzle to prevent you suck the water into the engine at low loads...