Airframe Type
Experimental
Performance
Maximum Continuous HP187–195
Maximum RPM @ full power2,700
Recommended TBO 2,000 hours
Number of Cylinders4
Bore5.125 in
Stroke4.5 in
Displacement371 in³
Compression Ratio8.1:1/9.6:1
CHT - Maximum500° F
CHT at Maximum Cruise (Recommended)425° F
Spark Plug Boss
18mm
Fuel
Fuel DeliveryCarb/Injection
Aviation Grade, Octane (Recommended)100/100LL
Dimensions
Height20.36-24.8 in
Width33.41 in
Length29.07 in
Weight
Estimated Dry Weight277–296 lbs
Oil Temperature
Normal Operating Temp180° F
Maximum Operating Temp245° F
Normal Operating Oil Pressure, psi
(Maximum / Minimum / Idling)90/60/25
Engine Mount
Dynafocal Type 1 or Conical
Propeller
Constant Speed or Fixed
Prop Governor
LocationRight Rear/ Front LH
Crankshaft
Flange0.44 in thick
Bushings (Prop Bolt Size)1/2-20 UNF
Oil Capacity8 quarts
Induction PlenumWarm/Cold
Sump Options
Aluminum/Magnesium