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.
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.
Maximum Continuous HP178 / 188 / 191
Max. RPM @ full power2700
Maximum Recommended TBO (hours)2,000
Number of Cylinders4
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
Delivery SystemFuel Injection AFP-150
Aviation Grade, Octane (recommended)100/100LL
(estimated dry weight in lbs.)254
Maximum Oil Temperature T/O245°F
Normal Operating Oil Pressure,psi (Max/Min/Idle)90 / 60 / 25
Dynafocal Type 1 (Conical optional)
Constant Speed (Fixed Pitch optional)
Bushings (prop bolt size)1/2-20 UNF
Oil Capacity8 quarts
Subject to change$23,772.00