Water injection

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Originally Posted by Dougal

Then you need more boost and/or better intercooling, not water injection. It's that simple.

There is no such thing as "emergency high EGT". Either the tune is safe and produces safe EGT or it's not.

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Agreed.I have experienced this first hand and agree that the tune is the issue.

As Dougal said.
Reduce fuel, or
Intercool more effeciently, or
Increase Boost, or
Lean off of throttle, or
Change Gears.

I prefer options 1, 2, and 3. I do not like 'user input' to control the EGT's as it makes me really nervous when my wife drives and doesn't comprehend EGT's above 650DegC and the damage that can occur.

Or use a combination. WI is not the fix-all I had hoped. It is however a damn good fuel economy booster, and fantastic at decreasing the block (coolant) temps

Cheers, Adam.

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Originally Posted by kreecha

Agreed.I have experienced this first hand and agree that the tune is the issue.

As Dougal said.
Reduce fuel, or
Intercool more effeciently, or
Increase Boost, or
Lean off of throttle, or
Change Gears.

I prefer options 1, 2, and 3. I do not like 'user input' to control the EGT's as it makes me really nervous when my wife drives and doesn't comprehend EGT's above 650DegC and the damage that can occur.

Or use a combination. WI is not the fix-all I had hoped. It is however a damn good fuel economy booster, and fantastic at decreasing the block (coolant) temps

Cheers, Adam.

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Oh and in retrospect of all this,
I will absolutely continue to use WI.

Quote:

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Originally Posted by kreecha

Or use a combination. WI is not the fix-all I had hoped. It is however a damn good fuel economy booster, and fantastic at decreasing the block (coolant) temps

Cheers, Adam.

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Were you including the energy content of the methanol in your fuel economy calcs?
Not to mention, carting around 200 litres (kg's) extra. :eek:

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Originally Posted by Dougal

Were you including the energy content of the methanol in your fuel economy calcs?
Not to mention, carting around 200 litres (kg's) extra. :eek:

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What do you mean by calculating the energy content of the methanol?

When acounting the price difference, I can use this scenario;

With the extra 200kg's of liquid, and the 400kg of equipment for our camper trailer (Yes I was very (Borderline) close to GVM), fuel economy (FE) with WI was 14.5L/100km[FE] with acceptable block temps and EGT's, (I was in a hurry). Without WI (Coober Pedy to Pt Augusta) fuel consumption was just under17L/100km.

With WI
Therefore I did 2200 @ 14.5FE.
14.5FE equates to $23/100km (1.63/L)
2200km @ $23/100km equals a total cost of $506 (plus $60 for meth)

Without WI
600 @ 17FE
17FE equates to $28/100km (1.63/L)
600km @ $28/100km equals a total cost of $166

Therefore cost per 100km-
With WI = $25.7
Without WI = $27.6

So noting I just did 11,500km's in our 4 week trip, I potentially could have saved $218.

Sadly my consumption rate is unsustainable. My intake manifold and intercooler is clean though!!

Cheers, Davo.

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Originally Posted by kreecha

What do you mean by calculating the energy content of the methanol?

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Methanol is a fuel which is offsetting some of your diesel usage.

Atomising the water..... just drip feed it onto a Hiclone, the swirling action of the hiclone will do the work.......
PS. this was intended as a sarcastic remark, often people read things on AULRO and take it as a positive fact.;)

I would not inject ANYTHING except gasses pre turbo on the compressor side. The blades spinning at 100,000+rpm will be damaged by droplets (even misting droplets) of fluid just as if you had been feeding sand into it:o


(This wasn't in response to the Hiclone comment Mario because I realised you are 'avin a larf, :) , just to an earlier post about preturbo nozzle placement :))

JC

I have injected well over a thousand litres of water/meth through my turbo at 2gph over the past 18 months, its still as good as the day it was fitted, just make sure you use top quality nozzles, high injection pressure and have a check valve/solenoid as close to the nozzle as you can. The benefits far outweigh the negatives if done properly.

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Originally Posted by two up

I have injected well over a thousand litres of water/meth through my turbo at 2gph over the past 18 months, its still as good as the day it was fitted, just make sure you use top quality nozzles, high injection pressure and have a check valve/solenoid as close to the nozzle as you can. The benefits far outweigh the negatives if done properly.

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Hi two up,
I see you say you have injected through your turbo,
When I do this the effects are adverse, what have you found your results to be? And how did you measure the results? When I inject into the turbo my EGT's increase.

Cheers, Adam.

Quote:

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Originally Posted by two up

I have injected well over a thousand litres of water/meth through my turbo at 2gph over the past 18 months, its still as good as the day it was fitted, just make sure you use top quality nozzles, high injection pressure and have a check valve/solenoid as close to the nozzle as you can. The benefits far outweigh the negatives if done properly.

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Mmm, I stand corrected. It goes against everything I 'know' about high speed objects (Turbocharger compressor blades) hitting a 'solid' as water is deemed to be in a whole 'droplet' form, but I guess water / metho and proper misting nozzles and not just water droplets are a goer then:).

JC