looks like the Spec 2 is going to have bigger balls than the first..
O.S. Speed of Japan have announced their engines line up for Summer / Autumn this year and among other non car related engines was the Spec II version of the 12TZ motor. A very popular engine for 200mm class racing in Japan the new version of the O.S. Speed 12TZ looks like a very nice engine, with teardrop work on the liner, a lightened, balanced and coated crankshaft and other new features but i cant give you specifics as the site is made in flash and so i cant translate it.