Engine mount attach fittings:

Conical (straight) (rare on 180 h.P., found only on some recent engines, such as j2a)

Type-1: Dynafocal engine mount attach fittings (most common)

Carb placement ; updraft, located on the bottom of the sump (common) side-draft, located at the rear, facing backwards (rare)

Conical (straight), found only all early engines, as well as some recent engines, such as b2a

Type-1: Dynafocal engine mount attach fittings (most common)

Type-2: Dynafocal, used only on piper twin commance pa-30, as fuel injected io-320bia or cia carb placement ; updraft, located on the bottom of the sump (common) side-draft, located at the rear, facing backwards (rare)

Hollow, required for use with a hydraulic constant speed propellor, such as those made by hartzell, mccauley, mt, etc. (usually 1 or 3 in second digit of designation, i.E. A1a, a3a, aif6, etc.)

Solid, less chance for corrosion in inner barrel, used with fixed pitch propellors only (usually 2 or 4 in second digit of designation, i.E. A4m, j2a, etc.)

The rest of the letters and numbers in the designation usually denote accessory type or location, or counterweights on the crankshaft (for smoothness with some propellors).

The 0-360 a4m and a4a are the most popular models of solid crankshaft engines, while the a1a is the standard hollow shaft model

Wentworth aircraft’s engine salesman each have over 20 years experience with these engines, and will be happy to guide you to the ideal engine for your engine horsepower upgrade, production airplane replacement engine, or homebuilt powerplant current 0-360 engine

Lycoming 0-320, 150h.P. And 160 h.P. Engines are the most numerous type of engines for production aircraft, having been installed on many types of piper, cessna, mooney, beechcraft, grumman, and many others

Available in narrow deck,(1954 through early 60′s), and wide deck, officially called wide cylinder flange(late 1960′s through the present) versions, which only changes the cylinder application, not the mount type, accessory locations, or carb placement

All 0-320 crankshafts are hollow, which is required for use with a hydraulic constant speed propellor, such as those made by hartzell, mccauley, mt, etc.

However, many cases are not drilled for the oil passages required for return oil, and many accessory cases are not set up for prop governor mounting.

If you plan on using a constant speed prop, talk to us about the easiest engines to convert a series engines (i.E. A2b) are 150 horsepower

Conical mount a series engines are 150 horsepower

Conical mount b series engines are 160 horsepower

Dynafocal mount d series engines are 160 horsepower

Dynafocal mount e series engines are 150 horsepower

The rest of the letters and numbers in the designation usually denote accessory type or location the 0-320 e2a (mechanical fuel pump) and e2d (no mechanical fuel pump) are the most popular models of 150 h.P. Engines,

But there are several variaties that are very similar, and might be as good or better for your homebuilt application the 0-320 d3g (mechanical fuel pump) and 0-320 d2j (no mechanical fuel pump) are the most common, but others are also similar the difference between 150 h.P. And 160 h.P. Is higher compression pistons, so it is possible for a homebuilder to start with a 150 h.P. And make it a 160 h.P., now or in the future,

But only the 150 h.P. Is approved for auto fuel, so let that help you decide your needs wentworth aircraft’s engine salesman each have over 20 years experience with these engines, and will be happy to guide you to the ideal engine for your engine horsepower upgrade, production airplane replacement engine, or homebuilt powerplant current engine availability includes: