T2 BHP

When you say "heowge" do you mean "very big" like........ "huge"?

You don't need the fans to match the CFM flowing through the intercooler. There is only a certain air speed across the core that you need to cool the charge. Whether you blow it at 200cfm, or 2000cfm, there will point where it makes no difference, otherwise on charge temp logs, FMIC equipped cars would notice a drop in charge temps the faster they go, where in fact they stay pretty constant across the range..

The fan is useful on the Noble, as the exhaust and 2nd turbo is situated under the intercooler, and it helps with heatsoak in traffic, and 'fairly' well at speed.

Remember, WI is only useful with charge temps over around 50 degrees C, below this it becomes inactive and may actually lose you power if you drop below this limit..hence why a decent CC or intercooler can get temps below 40c if required.

Put the WI nozzle after the intercooler for best results, though it will work before the IC, and cool the core too. ..BUT...even though after is best, on the T2, where you have the individual ports straight after the intercooler, it would be difficult to implement and get a decent placement. Stick a single injector before the intercooler.

Some interesting info on this ebay auction (Australian) using a MR2 as a test bed for there water injection, http://cgi.ebay.co.uk/WATER-METHANOL-IN ... dZViewItem

Is the MR2's intercooler the worst positioned intercooler from a factory fitted car GTA

Yeh tooright ,GTAs beat the japs at that result

[Alpineandy]

Is the MR2's intercooler the worst positioned intercooler from a factory fitted car GTA

I thought the Nissan Pulsar GTR was the worst (but I'm happy to be told otherwise).

The only problem when you look at WI test figures, is you can never actually guarantee they are actually accurate, as the temperature probes get dowsed in water too, so you cannot actually tell if the probe is monitoring the temperature of the air, or the water...

I have seen results where the charge temp has been lower than ambient, which in theory is impossible, but happened simply because the water vapour is dissapating the heat straight off the sensor..

When you say "heowge" do you mean "very big" like........ "huge"?

Or as James May might say - a moo-hoo-hoo-hooooge turbo

I'm seeing your point here Dave, although it must be a function of internal surface area/volume flowing through it vs external surface area/volume flowing over it. This is the sort of shite that's making me want to go back to school and learn

Assuming a 50/50 split between internal and external surface area would require a similar sort of flow, but thinking about it, you're right, the external area will be substantially larger than the internal.... which neatly leads into a probable additional reason for chargecoolers being more efficient - you're blowing the charge over a radiator with a larger surface area <i><b>and</i></b> full of luvvery ice cold water of the sort only to be seen in shampoo adverts.

(completely sober for once, would you believe it)

More info from Aquamist's website (buried somwehat but still there). I was absolutely wrong about vapourisation - that needs to happen inside the combustion chamber and not before - very important

13. Where do I place the water jet?
Normally immediately after the intercooler unless the intercooler suffers from heat soaking such as the type that is fitted on top of the engine (Subaru, GTI-R, Toyota Celica and etc).

14. Surely if the jet is placed before the intercooler it will have better cooling effects?
Not quite true. If the air entering the intercooler is pre-cooled, the cooling efficiency of the intercooler will drop due to the smaller temperature differentials between the ambient air and induction air within the intercooler core. Secondly, there is also a possibility that the hot air from the turbo may cause unnecessary vaporisation of the injected water thus taking up precious volume that was intended for the charge air.

).

14. Surely if the jet is placed before the intercooler it will have better cooling effects?
Not quite true. If the air entering the intercooler is pre-cooled, the cooling efficiency of the intercooler will drop due to the smaller temperature differentials between the ambient air and induction air within the intercooler core. Secondly, there is also a possibility that the hot air from the turbo may cause unnecessary vaporisation of the injected water thus taking up precious volume that was intended for the charge air.

But if you look at the T2 intercooler, its not really a good design for doing so, as you are getting more water vapour down the two middle ports - but you can see the point why Steve was enquiring about using multi port WI..

Just had some info from DevilsOwn Alcohol injection (just testing them for info), i think im driving the bloke mad with the questions lol, http://www.alcohol-injection.com/forum/ ... questions/

Stil cant help thinking that his suggested location for the nozzle wouldnt give a even distribution to all four inlets, i keep having visions of No 2 & 3 cylinders ok with 1 an 4 Det Maybe its me getting it wrong or paranoid , suppose it would be easy in any other car inc the GTA

Im sure wi will work well with the T2's poorly located IC (Must get those charge temps down) but its just the conflicting advice re the best location for the nozzles bring on the valium

Hope im not loosing the plot Just a thought surly two nozzles would work between No 1 & 2 and 3 & 4 which would then give a even distribution over all four, Might be over kill but if i used Aquamists system 2S this could be mapped to dial in the flow to the nozzles so not to flood it with water

Just wondering when Garry mentioned the single injector on top of the IC and using the base Aquamist system if his set-up is/was different? meaning his intercooler ect

Hope im not loosing the plot Just a thought surly two nozzles would work between No 1 & 2 and 3 & 4 which would then give a even distribution over all four,

Yes, that would be a better idea.

[Alpineandy]

Must get those charge temps down

This really sounds like a 'charge cooler' would the ideal.

Must get those charge temps down

This really sounds like a 'charge cooler' would the ideal.

4000 euros for a genuine large charge cooler

Must get those charge temps down

This really sounds like a 'charge cooler' would the ideal.

4000 euros for a genuine large charge cooler

Sod that. What you need to do, is chop off the matrix from the current intercooler, and make the ports and top tank of the intercooler into a normal 'intake manifold/plenum', then put a traditional chargecooler before it... Comprende?