Crack valve availability

[nacelp]

Me thinks your going way overboard, with a lot of time effort money, for the
difference in a well executed wet manifold system, vs what your doing.
  Earl's Plumbing, used to have some low pressure cracking valves
Grumpy



> Hi chaps,
> Any idea where one would get (small, 1/4") crack valves for water
> injection  tests.
> Ideally I'd like to explore a crack valve in the cylinder head which
> passes water - from extermal solenoid (no rooom for this in the head)
> at 130deg C and at about 100 to 150psi (still liquid hopefully) such
> that its injected at or near TDC - directly incylinder...
> What I mean by crack valve in this context is:-
> a. Releases at predefined pressure differential
> I'm guessing 130psi as a starting point for water that
> still liquid - want to use the vaporisation to help
> \ 'non-fuelled' expansion.
> b. Non return operation
> c. Small enough to machine into head and plumb around cams
> and other valve gear for external (outside cam cover) control.
> Ostensibly to spray onto the piston crown at a precise time (with or
> without any fuel), <hrrrm> flame suit on, just in this this is a
> completely idiotic thing to explore...
> If its been doen before - shoot me ;)
> Incidentally German U boats with double ended pistons used water to
> cool chambers - as a consequence they got a staggering 40 to 50%
improvement
> in fuel economy when the water was injected 'at the right time',
> Comments ?
> Tah
> :) mike
> Perth, Western Australia


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