ORIGINAL: armody
but why is it said that O.S.'s L.A. series is less powerfull than FX or AX series?
Mody
Well, let's start with carburetor venturi size.
OK, that's not the LA engine to the right, it is a FP engine that was replaced by the LA line of engines. Mostly the difference is square fins and rear needle.
If the FX engine was re-designed into a bushing engine, it would still be powerful.