<VV> anyone have a diagram for homemade vapor injection?

Jim Burkhard burkhard at rochester.rr.com
Sun Jan 6 12:44:42 EST 2008


David -

Others have pointed where there are instructions to make these. The 
bigger question is WHY?  Water vapor gizmos don't do anything!  The 
NORMAL combustion of gasoline in the combustion chamber makes WAY WAY 
WAY more water vapor than these vapor gizmo things put out!  Roughly, 
a gallon of water (if you condensed it to liquid) is produced for 
EVERY GALLON of gasoline burned!  How long does it take the mayonnaise 
jar + fish tank contraption to go through a gallon of water?

So does it hurt anything?  Well probably not, but it makes you look 
like a kook (if you built your own) or a sucker (if you bought one).

N.B. -- Liquid water injection is a WHOLELY DIFFERENT story. The 
liquid systems inject under load (the water vapor things do it under 
vacuum, the worst time). Also, the liquid systems cool the charge 
(enabling higher volumtric effiency & knock limits, especially on a 
boosted engine) because you are making use of the heat of vaporization 
of the liquid water (it sucks up heat to vaporize the water 
in-engine).  So liquid systems can be useful, but vapor systems are in 
the realm of fuel line magnets and scattering chicken bones on the 
hood of the car.

Jim "Straight Talk" Burkhard

David Fasgold wrote:
> Does anyone have a diagram/photos/instructions for a vapor injection setup? I recall seeing one somewhere but forgot where it was.
> Thanks,
> David


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