Originally posted by click, dublin
The only hassle I had was after coming down the straight the engine would pick up a high idle, if I blipped the throttle most of the time it would settle.
As I was mentioned earlier adjusting the needles didnt cure this problem for us.
Chris figured out what the problem was with this at St. Annes on Sunday. You could possibly have air getting in via the carb neck. He noticed that the Nova based carbs have a longer neck compared to the carb mount on the engine and they dont seat properly.
To cure this you can either grind the neck of the carb to allow it to seat better or add a second o-ring. After adding the o-ring Chris' engine ran perfectly and the high idle was gone.