WI nozzle size?

[m1tch]

I think a 50/50 mix is the most you can go before you need it mapped different, I know if you run 100% meths a remap will be needed, although my E-manage Ultimate can tune itself lol so yes the meths acts as a high octane fuel

I have never been a fan of pre turbo WI as its a bit like throwing tiny hammers at a fast spinning blade, like bird strike on a jet engine.

[turbotoaster]

the reason you run pre turbo water is when you start to push a turbo, ie over 1bar.

the reason a turbo runs out of power is because it goes past its efficiency range, ie as you turn the boost up the air gets to hot and loses its volume.

So by spraying it pre turbo you are infact cooling the compressor housing and wheel aswell as using the charge to cool the air passing towards the throttle body.

post turbo is good if your not pushing the turbo and pre turbo is if you are, these are only my opinions though.

as mitch mentioned hes only gonna run baby boost so im sure he will be fine

[skybusr34]

ahh i see.. so pre turbo is like a turbo housing cooler as well as air cooler.. got ya

[m1tch]

The turbo is air cooled though :rollin

I will be running the T88 at 1.2bar ultimatly, its rated to 2.3bar lol

The OEM turbo runs out of its efficency range at 0.9bar ish so I will be running WI on the OEM turbo to reduce the chance of det.

I might also run cryogenics on the intercooler, would that negitivly effect the WI system or would the meths act like antifreeze?

[turbotoaster]

well water cools a bit better than air lol

you got any pictures of your intercooler setup?

is the cryo thing basically co2 spray, it wont effect your wi system, unless the air going through your intercooler suddenly goes into a minus figure on boost which i think is pretty much impossible

[m1tch]

well water cools a bit better than air lol

you got any pictures of your intercooler setup?

is the cryo thing basically co2 spray, it wont effect your wi system, unless the air going through your intercooler suddenly goes into a minus figure on boost which i think is pretty much impossible

I don\'t have the setup yet, but its set like the MR2s, the turbo outlet will be pointing down into the intercooler, along where the undertray is and up to the compression tube.

Its liquid CO2, so the intercooler will get frosty when operating:

[turbotoaster]

nah you will be fine going pre intercooler, your inlet temps will be over 100c so they wont drop to a minus figure

[m1tch]

Unless I run E85 hehe

So if I run pre intercooler, shall I run with 2 X 0.6mm if 1 can cope with up to 350bhp?

[turbotoaster]

depends, are we talking after or before you do your custom ignition system?

[Prof]

Most of the \'cooling\' effect from the water is in the combustion chamber - it robs heat from the combustion process to evaporate the water and slows down the flame speed.  This means you can run higher boost before hitting detonation.
 
It will have a limited ability to cool the intake charge - obviously the earlier it\'s injected the more time it will have to reduce temps, but this is using waters high latent heat capacity - 4200j / Kg / C
 
The latent heat of evaporation is 2270 Kj / Kg / C (over 500 times as much).
 
It\'s much harder to heat up water than say - Meths - due to other factors like vapor pressue and so on, which is why people use meths as a cooler.
 
Meths still has quite a high latent heat of evaporation - about 1100 Kj / Kg / C so still works well in the combusion chamber - plus it\'s also a fuel - water isn\'t.   It\'s specific latent heat capacity is 1400j / Kg / C so about 1/4 of water\'s - but it evaporates more readily due to it\'s vapor pressure so is a better air cooler than water.
 
There is no denying that meths is a good cooler of the intake charge - but the big gains are in the combustion chamber - and water really does win there.
 
Incidentally - fuel is also used to cool the combustion temperatures - that\'s why turbo cars run horribly rich in an attempt to stave off detonation.  Injecting Meths, Water or a mix means you can lean out the fuel mixture towards stoich and get some power gain, but make sure you have a safety net if the charge injection cooling fails.
 
Oh and someone said if the spark is quenched it could lead to detonation - it shouldn\'t - as the spark is quenched - but you\'ll get ignition occuring outside the engine (turbo, exhaust system, exhaust exit) when it hits hot enough parts to ignite.
 
Injecting anything into the air and/or compressing the air itself will result in a denser charge and this will require a stronger igniton.

[Ed_RX7]

i have 600 cc post i/c with t88 no probs

[m1tch]

Where can I get nozzles from? Are there any good online sites? can\'t find any on the bay of E lol

[lee mills]

Hope this helps
http://www.methanol-injection.co.uk/index.php?cPath=25&osCsid=bc212720329b10067dcbd24fe7d9af84

[m1tch]

Ooo the devilsown UK site lol how did I not find that lol

Shall I run this:

http://www.methanol-injection.co.uk/product_info.php?cPath=26&products_id=45

Need 1 of these:

http://www.methanol-injection.co.uk/product_info.php?cPath=27&products_id=58

What is the name of the nozzle? I will run 2 nozzles for better atomisation?

[12at]

Can some guys post up some picsof their water injection setups ??