John Sannizzaro

  • John started slow building his RV-7 back in August of 2004. He is thrilled with his engine and is looking forward to flying behind it this summer.

    John Sannizzaro
    John Sannizzaro
    John Sannizzaro
    John Sannizzaro

    The ignition system is made by G3i. It utilizes the original Slick mags but modifies them to interface with the MSD spark amplifier. In February of 2012 I test ran the engine and the G3i ignition in the test cell at the Mattituck facility. When I switched the G3i ignition on, the engine smoothed out and ran smoother visually and audibly! I expect that it will feel smoother too, one I am flying behind it.

    Mattituck didn’t have a dyno when I test ran it, so I have no idea how many horsepower it has. I asked Mattituck to install a forward facing sump (Superior Parts) and Precision Airmotive fuel injection. It uses standard 8.7:1 compression. I also installed an Anti-Splat Aero negative pressure oil breather/oil separator to keep the belly clean. Theoretically some say that it adds some power by reducing crankcase pressure. I dare say that claim has yet to be proven.

    I chose a Hartzell constant speed prop and a PCU 5000 prop governor. The fuel system is stock Vans, except for the Andair fuel pump and selector. I have installed a dual screen Garmin G3X screens and a VP-X electronic circuit breaker system. The empty slot is for a Garmin GTN 650. I am using the Vetterman 4 pipe system. I call it the church organ.

    Airframe Type

    Experimental RV-7

    Performance

    Maximum Continuous HP178 / 188 / 191

    Max. RPM @ full power2700

    Maximum Recommended TBO (hours)2,000

    Number of Cylinders4

    Bore (inches)5.125

    Stroke (inches)4.375

    Displacement (cubic inches)361.0

    Compression Ratio7.2:1 / 8.5:1 / 9.0:1

    CHT - maximum475° F

    CHT at max. cruise (recommended)425° F

    Spark Plug Boss

    18mm / 14mm

    Fuel

    Delivery SystemFuel Injection AFP-150

    Aviation Grade, Octane (recommended)
    100/100LL

    Dimensions

    Height (inches)23.93

    Width (inches)33.41

    Johngth (inches)32.57

    Weight

    (estimated dry weight in lbs.)254

    Oil Temperature

    Desired T/O180°F

    Maximum Oil Temperature T/O245°F

    Normal Operating Oil Pressure,
    psi (Max/Min/Idle)90 / 60 / 25

    Engine Mount

    Dynafocal Type 1 (Conical optional)

    Propeller

    Constant Speed (Fixed Pitch optional)

    Prop Governor

    LocationRight Rear

    Crankshaft

    Flange.44 thick

    Stroke4.375

    Bushings (prop bolt size)1/2-20 UNF

    Oil Capacity8 quarts

    Induction PJohnumCold

    MaterialMagnesium

    Base Price

    Subject to change$23,772.00