Engine Model Numbers

250blue

New Member
Can anyone tell me what the individual numbers for the model of an engine stand for? For example: Lycoming LO-360-A1H6
 
[ QUOTE ]
For example: Lycoming LO-360-A1H6

[/ QUOTE ]

L = left hand operation

O = opposed cylinder arangement

360 = 360 cubic inch displacemnt

A1H6 = I would have to look it up
confused.gif
 
[ QUOTE ]
Can anyone tell me what the individual numbers for the model of an engine stand for? For example: Lycoming LO-360-A1H6

[/ QUOTE ]

LO = left-turning, horizontally opposed

360 = 360 cubic inches

I have no idea what the A1H6 is for and it probably doesn't matter.
 
[ QUOTE ]

Quote:

Can anyone tell me what the individual numbers for the model of an engine stand for? For example: Lycoming LO-360-A1H6



LO = left-turning, horizontally opposed

360 = 360 cubic inches

I have no idea what the A1H6 is for and it probably doesn't matter.

[/ QUOTE ]


L - left turning
O - horizontally opposed
360 ci
A1H6 is the accessory package. ie main block and cylinders for all 360s are the same, but the accessories (bolt ons) such as location of oil filter, 1 or 2 alternators, controlable pitch prop, or fixed, prop gov. and such...

Other examples

c-172 sp
IO-360-L2A

The "I" is for fuel injected

C-T206 was something like TIO-540-????
T for the turbo
 
Here is a basic list of the prefix letters

R = Radial

O = opposed

I = injected

G = geared (reduction gears for the prop)

T = turbocharged

S = supercharged

H = helicopter installation



There are more, but those are the basics
 
[ QUOTE ]
Another resource is to go directly to the manufacturer's website for the model code number. For example www.lycoming.textron.com/support/publications/keyreprints/maintainence/modelcode

that gets you a list of all of the meanings of the prefixes and suffixes.


[/ QUOTE ]

This link is broken, but I've seen this document in a maintenance shop and it's sorta interesting. Like you said, it has a huge detailed rundown of the prefixes, numbers, codes, etc. of all their engines If you run across one, you can look up the most obscure trivia about your engine and impress your friends (or they'll think you're a complete dork).
 
Back
Top