OHE Engines
What You Get:
  • RAM OHE Engine Conversion STC for converting your IO-520 engine to
    an IO-550-B/RA engine.
  • RAM OHE CMI IO-550-B/RA Engine
    • 285 to 300 Horsepower Upgrade
    • New Nickel Cylinders
    • New Spark Plugs
    • Camshaft - RAM high-efficiency
    • New Magnetos and Harnesses
    • New Oil Coolers
    • New Induction Couplings
  • RAM Customer Service and RAM Overhauled Engine TBO Warranty
  • D’ Shannon Aviation High Efficiency Baffle Cooling Kit for Your Engine.
  • RAM Special Edition Color Black on Black
  • D’ Shannon Aviation Upgraded Engine Installation STC
    • STC Authorization Documentation
    • Installation Instructions and Drawings
    • FAA Approved Supplemental Pilot Operating Handbook
  • D' Shannon Aviation 100 lb. Gross Weight Increase
  • D’ Shannon Aviation Customer Service Support Team
  • D’ Shannon Aviation Five-Year Baffle Warranty
  • Core Return Policy - See: RAM Exchange Core Policy to the right.
RAM OHE Engine Conversion STC Shipped
Package Includes:
  • RAM OHE Continental IO-550-B/RA Engine - exchange
  • Horsepower: 300
  • TBO: 1700 Hours
  • RAM New Nickel Cylinders: NE
  • Crankcase, heavy duty with 7th studs: OHE
  • Crankshaft: OHE
  • Camshaft - RAM High-Efficiency
  • Starter and Starter Drive without freon compressor drive: OHE
    ( Customer must specify 12v or 24v electrical system )
  • Spark Plugs: New
  • Magneto Harness - Champion: New
  • Magnetos - Champion Slick 6310 (impulse coupled): NE or Bendix - OHE as required by serial number of airplane
  • Fuel Injection System with non-altitude compensation fuel pump: OHE
  • Oil Filter: New
  • Throttle Assembly: OHE
  • Induction Couplings: New
  • D’ Shannon Avaition Inter-Cylinder Baffles Installed: NE
  • Oil Cooler: NE
  • Balanced Crankshaft and Rod Sets: Exchange
  • RAM Core Return Policy: Please read
RAM Kit Components - Packaged Separately
and Included:
  • Air Filter - RAM: New
  • Engine Oil - Break-In: New
  • Induction Hose - manifold to throttle: New
  • Gasket - Throttle: New
  • Alternator - customer must specify: 12v-70 amp or 24v-100 amp: OHE
    12 volt Delco Remy alternators are not available. See Additional Specifications note.
D' Shannon Aviation Airframe STC Includes:
  • D’ Shannon Aviation Upgraded Engine Installation STC
    STC Authorization Documentation
    Installation Instructions and Drawings
    FAA Approved Supplemental Pilot Operating Handbook
  • D’ Shannon Aviation 100 lb. Gross Weight Increase
D' Shannon Aviation High-Efficiency
Baffle Cooling Kit:
  • This high efficiency baffle cooling kit is made with high temperature, high tear strength, custom molded silicone laced fiberglass core material. They are strong and stiff, yet pliable and resilient enough to ensure a tight fit. Mountings are all new and polyurethane-coated aluminum. Complete set includes, custom fit air baffling and mounting system. D’ Shannon Aviation High Efficiency Baffle Cooling Kits come complete with a five-year warranty.
OHE = Overhauled Exchange
NE = New Exchange -OEM or PMA
New = New Outright - OEM or PMA
New Items = Subject to test time, ferry time and inventory time.
D' Shannon Aviation Customer Service
and Warranty:
  • The Support Team at D' Shannon Aviation strives to help our customers in every phase of picking and installing their D' Shannon Aviation STC'd mods. Contact a D ' Shannon Aviation Support Team Member by calling us at 1-800-992-3435 you will reach a live team member. The Support Team's normal business hours are 8:00 a.m. to 5:00 p.m. Central Standard Time, Monday through Friday.
RAM Aircraft Customer Service and RAM Overhauled Engine TBO Warranty:
  • We make ourselves available for our customers. When you call, you speak with a live person who will make sure that you get the attention you need and deserve. Call today for more information (254) 752-8381.
  • RAM Overhauled Engine TBO Warranty: Engine block assembly and components from cylinders down are covered 100% for one year or 500 hours whichever occurs first. Thereafter, the engine only is warranted on a prorata basis to TBO at RAM's reduced minimum accrual rate of only 30 hours per month, thus extending coverage over four years. Call us for details or questions. For complete details go to www.ramaircraft.com/ramtbowarranty
Additional Specifications:
  • Exchange Core Policy: Engine, crankcase, exhaust, accessories, propeller, governor, and hardware items are only sold on an exchange basis, based upon the customer's exchange of a normal runout core as removed from subject aircraft, engine type as represented on RAM purchase order, and serviceable to RAM's overhaul specifications. Core should be returned within 30 days of RAM OHE engine shipment, or immediately with a RAM installation. Non- serviceable core fees will be due and payable to RAM.
  • Items not included: Vacuum pump, hoses, exhaust risers and exhaust parts are not included unless specified by an optional purchase order and a work order supplement issued at the time of engine order placement.
  • Customer discuss the following with your RAM Representative before ordering.
  • Electrical System: Electrical system currently in airplane must be provided to RAM for proper alternator and starter selection.
  • Aftermarket STCs: Engine parts and accessories required by aftermarket STCs such as, but not limited to, turbo normalizing and fuel pump changes, are not included with a RAM OHE engine. Compatibility of aftermarket STCs with the D ’ Shannon installation STC is required and should be reviewed.
  • Aftermarket STC Parts: Substitution or addition of aftermarket parts is an additional charge. Please review with RAM prior to engine overhaul. Pre-shipment of aftermarket cores may be required.
  • Delco Remy 12 Volt Alternators: if your aircraft is equipped with this alternator you may elect to re-use your alternator, or obtain one from another source for your installation and use. The Prestolite ALXALX9524 is available (and RAM will provide one with your engine package) when installed per Beech Service Instructions No. 0184-241 Rev. 1. Ask your RAM Representative for details.
Engine Conversion Package
Aircraft Applicability:
  • Bonanza S35, V35, V35A, and V35B
  • Bonanza C33A, E33A, E33C, F33A, and F33C
  • Bonanza 36 and A36 with an IO-520 engine
Prop Eligibility:
  • McCauley: C76, C406, and C409
    Hartzell: PHC-C 3YF-1RF/F8468, /F8068 Super Scimitar Propeller
  • New Super Scimitar with state-of-the-art propeller technology available at D’ Shannon Aviation.
Contact Us:
  • RAM Aircraft, LP
    Phone: (254) 752-8381
    Engine Fax: (254) 752-3307
    Parts Fax: (254) 756-0640
  • D’ Shannon Aviation
    Phone: (800) 291-7616 or (763) 559-5998
    Tech Support: (800) 992-3435 or (952) 469-2623
    Fax: (763) 535-3759