I think you might find that the reason Heinricy could not race was because the driveshaft failed. That's what I heard at the time. Since there isn't an extensive, public record of photos/statements of the incident, your suspicion that the Iso Torque was the problem might be right. I wonder how he managed to win multiple races BEFORE that incident using the Iso Torque. He certainly was enthusiastic about it and the second place racer really wanted to run with an Iso Torque. I was there when he expressed that wish. A whole season of racing with the Iso Torque in the Nissan 350Z was documented and the only failure I recall from those races was when one of the teams used the wrong lube or disconnected the radiator. I might be wrong, but I don't think there were too many prototypes being used prior to TG. The one or two that Nissan and Phoenix Racing used, got a LOT of abuse and still finished races.
If you compare the Iso Torque with the old Torsen, they aren't that different. The inherent design is certainly robust. If, in the process of 'simplifying' and combining the Torsen to create a new, patentable, design something vital was lost, perhaps that is a problem. I just wonder what is going on now that a 600+ horsepower, racing Corvette could not expose earlier. Whatever the problem is, at least Torvec seems to have enough money and resources to solve it. I sure hope DK is correct about O.E.M.s buying into something when they do.
Critics could be right. Just trying to be optimistic. Like all of us, waiting for the day I click on Torvec or here and see a bunch of messages about a real, massive, production order. I would consider a widely promoted use of a few thousand Torvec Iso Torques in a Cadillac, Corvette or Hyundai, a massive event. Something to get the word out to the world market and the stock market. Did a quick search on Heinricy and the top site shows the Phoenix Corvette with Torvec on the nose. Last I heard he was working with Mazda or Kia on something. Anyway, this would be a way of following what he is up to - http://www.heinrocket.com/ EOM