Quote:
Originally Posted by john marcella
Not nearly as simple as advancing or retarding a given Cam . Ivo depends on pressure in the manifold versus pressure in the cylinder left over from the exhaust cycle . Ivc depends on how close your cylinder pressure is to your Intake pressure.
Evo is dependent on how much residual pressure there will be in the cylinder when the Pistons coming up on the exhaust stroke after blowdown occurs ( pumping Loss). Evc will depend on the pressure in the combustion volume during overlap versus Inlet pressure versus exhaust back-pressure on the hot side of the turbo.
See complex.
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How in the hell are you supposed to figure this out!!!! Does all this take into account velocities at different RPM points? I guess you would use probes to gather the info needed? Vaught and Wilkie I am not.
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67 Firebird 3440 lbs, Pump gas 537 IA2, tiger heads, 4.86 rear, 32 x 17.5's, full interior, 4 mufflers, street shape 1.36 60', [email protected] 1/8 mi. 5.67@123 on small shot.
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