Make the most of your next engine overhaul with an FAA-approved engine conversion or performance upgrade from Penn Yan Aero. Whether you're looking for additional horsepower, improved climb performance, increased useful load, or an alternative to your aircraft's original engine configuration, our STC programs offer proven solutions for qualifying Cessna and Piper aircraft. Penn Yan Aero has supplied thousands of SuperHawk conversions since 1983, supported by more than 80 years of aircraft engine overhaul experience. Explore your options using our STC Selector below, or contact our engine sales team for assistance.
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The Penn Yan Aero SuperHawk STC transforms qualifying Cessna 172 models I, K, L, M, N, and P from their original 150 or 160 horsepower configuration to a 180 horsepower Lycoming O-360-A4M engine. For Cessna 172 owners who appreciate their aircraft but would welcome improved takeoff, climb, and useful-load capabilities, SuperHawk offers an attractive alternative to purchasing a different airplane. More Than Just Additional Horsepower SuperHawk is designed to improve the versatility of your Cessna 172. Whether carrying passengers, operating from shorter runways, or flying in demanding conditions, additional engine power provides greater operating capability when you need it. The conversion includes an approved Sensenich propeller, required STC documentation, installation instructions, and applicable conversion hardware. Proven Performance Testing conducted with Penn Yan Aero's Cessna 172 demonstrated substantial performance improvements, including: - Cruise speeds up to 151 mph - Takeoff distances as short as 400 feet under tested conditions - Rate of climb up to 1,020 feet per minute at 2,400 pounds - Demonstrated ceiling of 19,500 feet - Approved gross weight capability up to 2,550 pounds on applicable configurations Actual performance varies with aircraft configuration, operating weight, altitude, temperature, and other conditions. Refer to the applicable approved flight manual supplement for operating limitations and performance information.A Proven Upgrade Since 1983With thousands of SuperHawk conversions supplied worldwide, Penn Yan Aero brings decades of experience to one of the most established engine upgrade programs for the Cessna 172. There are three ways to get the SuperHawk engine in your 172. Three Ways to Upgrade to SuperHawk Option 1 — Penn Yan Aero Engine Overhaul & Conversion Convert your existing qualifying Lycoming O-320 engine to a 180 HP O-360-A4M through Penn Yan Aero's overhaul and conversion process. Includes the SuperHawk STC conversion package and Penn Yan Aero's engine overhaul warranty. Round-trip engine shipping is included within the contiguous United States, subject to our shipping policy. Option 2 — Factory-New Lycoming Engine Upgrade to a factory-new, zero-time Lycoming O-360-A4M engine configured for the SuperHawk conversion. Includes the SuperHawk STC conversion package, required propeller, and applicable Lycoming factory warranty. Engine availability and delivery times are determined by Lycoming. Shipping is additional. Option 3 — SuperHawk STC Conversion Kit For customers who already have an eligible engine solution, the SuperHawk conversion kit is available separately. Includes the STC documentation, installation instructions, required conversion hardware, and applicable Sensenich landplane propeller. Engine and shipping are not included. Seaplane Applications SuperHawk is also available for approved seaplane configurations. Contact Penn Yan Aero to discuss aircraft applicability and the appropriate conversion package.
Proven 160 HP Performance for Qualifying Cessna and Piper Aircraft The RAM 160 conversion offers qualifying Cessna 172 and Piper Cherokee owners an opportunity to upgrade or replace their original Lycoming O-320 engine configuration through an FAA-approved STC program developed by RAM Aircraft. For Cessna 172 Models I through M Upgrade from the original 150 HP Lycoming O-320-E2D to a 160 HP O-320-D2J configuration For Cessna 172N Models Replace the original 160 HP O-320-H2AD with an approved O-320-D2J engine configuration while retaining 160 horsepower. For Qualifying Piper Cherokee Models The RAM 160 program provides an approved 160 HP engine conversion for qualifying PA-28-140 and PA-28-151 aircraft. Supported by Penn Yan Aero Penn Yan Aero can incorporate the applicable RAM 160 conversion into your engine overhaul planning, providing experienced engine overhaul services and assistance with identifying the appropriate upgrade for your aircraft. The RAM 160 is a RAM Aircraft STC supplied through Penn Yan Aero. Aircraft and engine eligibility, approved configuration, and applicable conversion components must be verified before quoting.
An Alternative to the Original O-320-H2AD For qualifying Cessna 172N owners, Penn Yan Aero's DeltaHawk conversion offers an approved alternative to the original Lycoming O-320-H2AD engine. The conversion permits installation of an approved Lycoming O-320-D2J or O-320-D2G engine configuration, replacing the original H2AD arrangement. Benefits of the DeltaHawk Conversion - Alternative engine configuration to the original O-320-H2AD - Two separate magnetos rather than the original dual-magneto arrangement - Potential gross weight increase of 100 pounds, subject to approved aircraft configuration and limitations - Experienced engine overhaul and conversion support from Penn Yan Aero Get More From Your Cessna 172N For aircraft owners planning an engine overhaul or considering alternatives to the original H2AD engine, DeltaHawk provides an opportunity to evaluate a different engine configuration while retaining the familiar Cessna 172N airframe. Contact Penn Yan Aero to confirm eligibility, conversion requirements, and available engine options.
Give Your Piper Warrior the Power of 180 Horsepower Take your Piper Warrior to the next level with the Bold Warrior 180 HP engine conversion, supported by Penn Yan Aero's aircraft engine overhaul expertise. The Bold Warrior STC allows qualifying Piper Warrior aircraft to replace their original 150 or 160 horsepower Lycoming O-320 engine with an approved 180 horsepower Lycoming O-360 engine. For owners looking for stronger climb performance, improved takeoff capability, and additional power during high-density-altitude operations, Bold Warrior offers an attractive alternative to purchasing a different aircraft. Proven Performance Improvement's Testing published by Bold Warrior demonstrates improvements that include: - Approximately 200 feet per minute additional climb performance - Takeoff roll reductions of approximately 350 feet - Cruise speed improvements of approximately 6–10 knots, depending on propeller configuration - Service ceiling increases of approximately 3,000 feet Actual results vary based on aircraft configuration, operating conditions, and installation details. The conversion does not increase the aircraft's approved gross weight, and the heavier engine and propeller may reduce useful load. Penn Yan Aero Engine Overhaul Support Penn Yan Aero works with the Bold Warrior conversion program to supply properly configured Lycoming O-360 engines, including overhauled engine options. Our decades of engine overhaul experience provide owners with an established source for the engine at the heart of their conversion. About the STC The Bold Warrior conversion is a separately owned STC program, not a Penn Yan Aero STC. The conversion requires approved engine and propeller configurations, installation components, and documentation supplied or authorized by the STC holder. Interested in a Bold Warrior Conversions? Contact Penn Yan Aero to discuss engine availability, overhaul options, and pricing for your aircraft.
