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Water/methanol/alcohol Inj.

Daboss

By Daboss,
in Engines & Forced Induction

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Daboss Experienced

Daboss

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Hey there forum, wanted to ask a few questions about water/meth injection.

Firstly I have no methanol readily available were I live only denatured alcohol and I wanted to know if it was just as good as the methanol and why/why not?

I have an injection kit that brings on the 50/50 mix of alcohol and distilled water progressively starting at 60% at 5psi and going all the way to 25psi were it hits 100%. I did it this way because I have a 550cc nozzle that I think is to big. What nozzle size do you guys recommend for a built 25 running a 35r .63 rear at 17psi, actual goal 20psi running 17 daily? Really just trying to get as far in the 400whp area that the turbo will take me at 20psi, wont be running more than that.

Now for the topic of the thread, I only have 95 ron available and figured the kit would give me a wider tuning margine and degree of safety. I noticed that when full on boost from about 5500 rpm I have my timing at 19 degrees from load point 16 all the way to my redline of 7000 rpm because I got a knock of 60 somewhere in that area at like 21 degrees of timing. The 19 degrees I had to change it to is less than stock timing map that the pfc came with. I figured I would have been able to get more out of it using the injection. My nozzle is right in front of the throttle body and I was wondering if that had anything to do with it? When I say right in front I mean like maybe an inch away.

Edited by Daboss
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https://www.sau.com.au/forums/topic/329351-watermethanolalcohol-inj/
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Daboss Experienced

Daboss

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I've seen plenty of WI kits and the nozzle is pretty much in the same position as what yours is.

Ok thanks, just was wondering cause I read somewhere that it should be AT LEAST three inches from the throttle body. Just thought mine was a bit to close.

linkems Collaborator

linkems

Posted
Posted

The methanol will raise your octane up significantly higher so you'll be able to run some nice timming, whilst the water will drop combustion temperatures. Spend a few hours reading these 2 links

Everything you need to know about WI

Water injection forum

Daboss Experienced

Daboss

Posted
  • Author
Posted
The methanol will raise your octane up significantly higher so you'll be able to run some nice timming, whilst the water will drop combustion temperatures. Spend a few hours reading these 2 links

Everything you need to know about WI

Water injection forum

Hey man thanks for the reply. I have already read through those over and over again and that's my dilemma, I know the fuel here isn't worth sh%^ , it's the equivalent to the Aussie 95 ron. Even so I would have figured the alcohol/water mix I am spraying, because of the lack of methanol here, would take the octane rating up high enough for me to run more that 19 degrees timing full load turbo on full song. That's less than the stock map that the pfc comes with.

That is why I was asking if my nozzle might have been a bit to close not allowing the mixture to spread enough in the piping.

tridentt150v Grand Master

tridentt150v

Posted
Posted

Snow performance recommend 60-100mm from the TB, so yours is a bit close, try drilling and tapping another hole and weld or bolt the other one up.

Even a hose clamp with a bit of rubber tube inner would cover the other one temporarily.

Like that second link btw linkems, good one that I haven't seen before.

Daboss Experienced

Daboss

Posted
  • Author
Posted
Snow performance recommend 60-100mm from the TB, so yours is a bit close, try drilling and tapping another hole and weld or bolt the other one up.

Even a hose clamp with a bit of rubber tube inner would cover the other one temporarily.

Like that second link btw linkems, good one that I haven't seen before.

Great idea man!!!!!! Will try that and see if moving the nozzle further back will help.

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