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Message: [QUOTE="V-Ref, post: 37932, member: 660"] Do you mind breaking this down Fred Flintstone style for the knuckle dragger types (like me)? I can grasp the vocabulary, and believe I comprehend the logic...but just to be sure....your time/effort into breaking this down one more level is appreciated. i.e. High rpm is restricted by rate of injection as the mechanical window of injection stays is the same regardless of rpm, but this window "shrinks" as rpm increases due to speed of the rotating assembly i.e. Injection rate is limited by oil flow....not sure I can expound on this point effectively. My two guesses would be ICP times 5, 6 or 7 (depending on intesifier to plunger ratio) to 1...and given a ICP limitation of 3000-3500 psi....HEUI is limited to less than ideal injection pressures, for this small mechanical window at upper rpms....My second guess would be a hydraulic limitation of the oil side of the injector...ie...it can't get out of the way of itself between injection events due to a pressure/volume limitation of the HPO system, or a limitation of the oil side of the injector... i.e. Limited poppet travel...square me a way... and the rest... :jawdrop: definitely need a lifeline. Thanks! [/QUOTE]

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