ORIGINAL: Kostas1
The OS LA series are ABN engines.
So they are plain engines?
Without rings,correct?
Also the fact that you have a ringed engine,will increase power or sth else in comparison with a plain engine of similar displacement?
OS LA enignes are plain engines without rings. Fewer parts thus cost less.
Ringed engines do develop more power. But they are getting rarer to find, for example the OS .50 is ringed but the OS FX .46 is not ringed. Most of the engines in the 40 to 50 range are not repeat not ringed. Super Tigre .51 is ringed. Thunder Tiger Pro 46 is not ringed.
Ringed engines are harder to break in, take longer to develop their power.
Cheers,
Chip