water injection

[Guest DaveWilko]

Trust me, I'm all for using the best kit I can afford. Would be cool if someone would do a proper test of the different systems on the market. That Aquamist one seems the dogs danglies

[Tricky-Ricky]

I have no doubt you are correct but what price is it? With the current exchange rate the yankee kit is great value for those of us on a budget.

 

Also as a very rough way of setting it up, if the engine bogs down, even with the most basic system you adjust the pump pressure so it doesn't bog down

 

There is only one problem with doing that, the atomisation relies on high pressure to provide very small droplet size, far better to have the correct size jet run at full pressure, then you get the full benefit of small droplet size.

[Ian C]

I've always been a bit suss of water injection for one main reason. I know water injection works for charge cooling and safety/power benefits BUT, I reasoned that if you use it for additional power you are asking for trouble if it runs out, or the pump fails, or a hose pops off etc etc and suddenly your mapped-for-WI car has no WI. If you don't use it for additional power, then by definition your car runs fine without WI so why in fact install it.

 

The HFS system, however, covers all of that and I have plans, oh yes, plans... It's pretty much a failsafe system so you can tune for more power around it in such a way that if anything goes wrong the car drops back to a safe non-WI mode. Sexeh

 

-Ian

[M4RK RZ]

There is only one problem with doing that, the atomisation relies on high pressure to provide very small droplet size, far better to have the correct size jet run at full pressure, then you get the full benefit of small droplet size.

 

I see what your saying and in one sence your right - get the nozzel right and you get a good atomisation rate - however the pressure is more for purging the correct ammount (flow rate) thro the nozzel in this case. The nozzels will mist correctly when a particular pressure is reached - past that the extra pressure is not an advantage for dropplet size.

 

You can buy an atomiser form the garden centre - altho crude to provide a amtomised mist you only need squeese the trigger - not much pressure there.

[Tricky-Ricky]

I see what your saying and in one sence your right - get the nozzel right and you get a good atomisation rate - however the pressure is more for purging the correct ammount (flow rate) thro the nozzel in this case. The nozzels will mist correctly when a particular pressure is reached - past that the extra pressure is not an advantage for dropplet size.

 

You can buy an atomiser form the garden centre - altho crude to provide a amtomised mist you only need squeese the trigger - not much pressure there.

 

Its a case of the pump being designed to run at a set pressure, (well Aquamist anyway) don't know about Sureflow, this pressure is adequate to run flow rates using jets up to a certain size, but even so the atomisation is reduced when using the bigger jets, so i tend to run two smaller ones for this reason.

[Guest DaveWilko]

Its a case of the pump being designed to run at a set pressure, (well Aquamist anyway) don't know about Sureflow, this pressure is adequate to run flow rates using jets up to a certain size, but even so the atomisation is reduced when using the bigger jets, so i tend to run two smaller ones for this reason.

 

Aquamist use a sureflow pump and they are adjustable with a 2mm allen key to a screw recessed in the end of the pump or by the adjustment dial on the controller. Have to agree with you about using 2 small jets I only needed 1 small jet on the Golf but 2 would be better for the Supe