Sky Ranch Engine Manual - 2nd Edition

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Sky Ranch Engine Manual thoroughly covers the operation, inspection, and maintenance of the Lycoming and Continental piston aircraft engine, including a very comprehensive troubleshooting guide. This book goes beyond the basic theory and construction of aircraft reciprocating engines, but instead focuses on the practical aspects for mechanics and operators of why things go bad, how to repair them, and most important; how to keep them from failing in the first place.
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Table of Contents

  • How your engines works
  • Continental engine specifications
  • Lycoming engine specifications
Chapter 1 Fatigue Analysis
  • Stress and strain
  • Fatigue
  • Stress flow
  • Stress risers
  • Surface finish
  • Residual stress
  • Compressive residual stress
  • Autofrettage
  • Shot peening
  • Nitriding
  • Rolled threads
  • Tensile residual stress
  • Plating
  • Bending
  • Grinding
  • Cold working
  • Stress relieving and annealing
  • Contact fatigue
  • Fretting fatigue
  • Cracks and fractures
  • Fatigue cracks
  • Thermal fatigue fracture
  • Unexpected sources of fatigue damage
  • Field analysis of fatigue failure
  • Torsional failures
Chapter 2 Engine Inspection
  • Oil starvation
  • Prop strikes
  • Stuck valves
  • Engine parts
  • Engine contaminants
  • Camshaft follower failure modes
  • Oil analysis
  • Oil filter analysis
  • Dirt, silica and silicone
  • Metal particles - identification
  • Inspection of contaminated aircraft oil systems and oil coolers
  • Crankcase fretting in Continental engines
  • Flow porting and its effect on cylinder head cracks
Chapter 3 Engine Performance
  • Starting and idle
  • Take-off
  • Climb
  • Cruise
  • Leaning
  • Descent
  • Taxing and shutdown
Chapter 4 Cylinder Repairs
  • How engine angle head rocker arm alignment
  • Intake guide seals
  • Cylinder honing
  • Cylinder choke and piston design
  • Chrome plate piston ring failures
  • Do the rings rotate?
  • Piston inspection
  • Connecting rod line boring
  • Color coding of cylinders
Chapter 5 Lubricants & Wear
  • The function of engine oils
  • Cylinder Barrel Wear - Steel Barrel Cylinders
  • Cylinder Barrel Wear - Chrome Cylinder Barrels
  • Intercooling Effects on cylinder wear
  • Greases
  • Friction Laws applied to hydrodynamic lubricated surfaces
  • Friction Laws as applied to boundary lubrication
  • Oil additive supplements
Chapter 6 Hose Assemblies
  • Age Limit on hoses
  • Condition Limit on hoses
  • Buna-N rubber and toluene
  • Firesleeve those hoses
  • The hose mandrel
  • Classification of hose defects
Chapter 7 Fasteners and Failures
  • What is a bolt?
  • Stress distribution within the bolt
  • Stress distribution within the nut
  • Equalizing stress distribution
  • Paint and broken cylinder studs
  • Torque accuracy
  • Connecting rods
Chapter 8 Calibration
  • What needs to be calibrated
  • What does not need to be calibrated
  • Calibration interval
  • Calibration Reports
Chapter 9 Troubleshooting
  • Sixty engine symptoms diagnosed
  • Chapter 10 Performance Limits
  • Fits and Limits
  • Displacement
  • Horsepower
  • BMEP
  • Propeller Load Curve
  • Power Curve Construction
Chapter 11 Forces, Vibrations, Balance
  • Rotating Balance - rotational motion
  • Reciprocating Balance - transnational motion
  • Reciprocating Force Analysis
  • Torsional Balance
  • Balancing the oil film
  • Torsional Effects
  • Connecting rod balance
  • Vibration Isolation
  • Gyroscopic couples
Chapter 12 Lycoming Engine Specifications
Chapter 13 Lycoming Connecting Rods
Chapter 14 Glossary


  • Copyright Date: 1991
  • Edition: 2nd
  • Pages: 497
  • Binding: Paperback
  • eBook
  • File Type: standard pdf ebook
  • Print: unlimited
  • Copy/Paste: unlimited
  • Offline Access: yes
  • Search: always
  • Bookmarks: always
  • System Reqs: Windows, Macintosh, iPad, and more


  • Diagnosing engine failures
  • engine operation
  • how metal fatigue affects engine life
  • torsional engine vibrations and engine balance
  • flow porting and its effect on engine performance
  • lubrication and wear in your engine
  • an engineering approach to cylinder repair
  • and more

Version Types

Softcover Book - Printed book with heavyweight cover stock.

eBook EB - A protected document designed for reflowable content. Also referred to as an ePub or "Electronic Publication" format. Easily viewed on both small and large screens. Text, images, and pages will adapt or reflow to fit the screen size of the device, so zooming is not necessary to read. Text size can be adjusted in an ebook reader app. Visit AC Technical Books -eBooks for more details on how to setup your device.

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5 star

Daniel D Verified Purchase


February 8, 2022

Wasn’t exactly excited about the book, based on the magneto book by the same author which I ordered years ago. Then I received the substantially thick and very informative book in the mail. Wow! Now that’s some fantastic information. Great book for anybody that really wants to know what’s going on with an airplane engine.

March 29, 2018

Great Service Great Book!! Thanks

Dan S
February 18, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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