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EAA Airventure 2022

Visit Lycoming Engines at Booth 277-282 (outside Building A) at EAA AirVenture July 25-July 31, 2022 in Oshkosh, WI! Lycoming Engines is excited to return to EAA AirVenture 2022! We can’t wait to see our customers in-person at The World's Greatest Aviation Celebration! Stop by the Lycoming Engines Booth too: Meet Flight Chops, Mike Goulian, Jimmy's World and the Patey Brothers Attend Piston Engine...
knowledge base

Why Oil Analysis Is Important

Much is heard these days about the use of oil analysis as a tool for helping to determine engine condition. However, the vast majority of the general aviation public do not understand how this tool is to be used. We will attempt here to set forth a brief summary of the subject. Oil analysis is not new, but it came late to general aviation as a maintenance tool. The object is to examine oil samples...

LW-16222

Submitted by root on
CLAMP-EXHAUST PIPE
Revision
-A
knowledge base

Caring for Your Low-Compression Engine With Grade 100 Aviation Fuel

Many Lycoming engines designated as low-compression engines were originally certified to use Grade 80 aviation gasoline. The fuel was rated at 80 octane when the engine was leaned for cruise, and at 87 octane when it was set at rich for takeoff and climb. This aviation gasoline contained one-half milliliter of lead per gallon. Owners of aircraft that use engines certified to use Grade 80 fuel...
knowledge base

What is Engine Balancing?

After certifying hundreds of flat, opposed cylinder aircraft engines, and after building more than three hundred thousand engines for general aviation, Lycoming engineers have learned what it takes to produce properly balanced engines. Many engines have been tested over the years and a great deal of data is available to support the building of engines to factory specifications. To put it simply...
knowledge base

Choosing the Right Engine

There are many who look for an aircraft engine on the open market. While there is nothing wrong with this approach to acquiring a needed power plant, it sometimes results in an unfortunate choice. Perhaps a little information on the possible pitfalls may help to reduce the number of bad choices. Individuals working on home-built aircraft may be particularly susceptible to this type of error. At...
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A Low-Time Engine May Not Mean Quality and Value

Reading the “Aircraft for Sale” advertisements can be interesting and misleading. As aviation-oriented people, we are conditioned to look for certain bits of information which we believe will allow us to evaluate the product offered for sale. In the case of airplanes, this information can generally be segregated into three categories – airframe, avionics and engine. For purposes of this article...

LW-16237

Submitted by root on
VALVE-WASTEGATE
Revision
--
knowledge base

Hard Facts About Engine Break-In

Most people seem to operate on the philosophy that they can best get their money’s worth from any mechanical device by treating it with great care. This is probably true, but in many cases, it is necessary to interpret what great care really means. This is particularly applicable when considering the break-in of a modern, reciprocating aircraft engine. Aircraft owners frequently ask about the...
knowledge base

Leaning Lycoming Engines

Revision “D” to Service Instruction No. 1094 supersedes all previous recommendations and should be used for engine leaning during normal flight operations. All leaning recommendations are based on calibrated instrumentation. Lycoming strongly recommends that all engine instrumentation be calibrated annually. All instrumentation for manifold pressure, engine RPM, oil temperature, cylinder head...