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Water Injection Calculator !

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Old Sep 14, 2009, 11:24 PM
  #16  
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Can you explain in my projectX thread? I will repost the Q
Old Sep 15, 2009, 12:14 AM
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Done
Old Sep 15, 2009, 06:19 AM
  #18  
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I think this calculator is wrong lol - i must be reading it wrong...

ok

Enter:
560
3
100
3
4
results in 2240 cc/min

now choose 10% Desired % of Fuel to be Injected
results in 224 cc/min (10% of the above) The worksheet calls this "Calulated TOTAL WATER FLOW"

Next:
enter 50% meth mix (I presume this means a 50/50 Water/meth mix)
results in 336 cc/min "Calculated TOTAL FLOW REQUIRED".

however that's not right!

if the water flow is 224 cc/min and your using a 50/50 meth/water mix, then you SHOULD be seeing 224 cc/min of water AND 224 cc/min of Meth - not 50% of 224 cc/min Meth

ie a TOTAL FLOW of 448 cc/min (224 cc/min * 2)

Anyone think something is funny here?

Last edited by tephra; Sep 15, 2009 at 06:28 AM.
Old Sep 15, 2009, 09:19 AM
  #19  
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The amount needed of water/meth also greatly depends on the climate you live in.

PS I don't really use the calculator. So many things can vary the amount needed.


Evan Smith
Old Sep 15, 2009, 04:56 PM
  #20  
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tephra, I believe methanol flows different than water, so that is why your calculations are off. Anyone have more specific info on this?
Old Sep 19, 2009, 01:59 PM
  #21  
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Meth flows faster then water.

The vid got removed by the author but on youtube there was a college student the showed the surface traction loss was 2x higher in the nylon line with water then meth for a project in school (nothing to do with cars) it was for RC planes.

He was using distilled water and 67-56-1 meth.

He also noted when mixing the two that you had to let the mix sit for over 4 hours for the water molecules to absorb the meth fully giving his mix a 1.2x surface traction loss vs the orig. 2x.

So yes meth does move faster in the line and at the nozzle I am sure, pump design might even play a role in meth vs water vs mix setups.

Last edited by BCOZEVO; Sep 19, 2009 at 02:06 PM.
Old May 17, 2011, 08:02 AM
  #22  
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Bump! Newbs use this
Old Jun 5, 2011, 09:24 PM
  #23  
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stock rail fuel pressure should be 2,8 bar. thats the pressure the injectors see in boost
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