what you use is totally dependant on what your intended use for the motor is. hyperutectics are better for most rebuilds and performance and are stronger than cast pistons. tey are lighter therefore creating less rotational mass and of coarse less stress on parts and allow higher revs easier. also you can run tighter clearance which gives better stability to the piston and better oil control. but if you intend to make serious hp with a blower or alot of juice then a good forged piston would be better. but get a quality set, not trw's which are slugs. forged are stronger, not better. a good set of either type is equally as good when used in the right way.
|