Here is an excerpt from Avweb, referring to a new engine from Continental/Honda joint venture (emphasis mine):
"According to Nakayama, the engine has been running in the test cell since February of 2002 and has flown a handful of hours in TCM's test-bed
Cessna 337. Fuel specifics are in the .37 range, which translates to about 10.5 GPH at 75-percent power. It weighs only 200 pounds, which makes it both lighter and smaller than the Bombardier offerings and smaller than, say, a Lycoming IO-360 of similar horsepower. TCM offered no details on either cost or a certification schedule. "
For the whole article, see:
http://www.avweb.com/newswire/9_31b/...85409-1.html#2
Kevin