Originally Posted by jono1982

I was running a new engine and as we where running it in we found it was difficult to tune then i got some help from one of Australias top drivers and he was also having problems.There was another person at the track who also had the same motor so we applied his screw settings and still the car would lean out apon appling full throttle we where about to give up when I suggested we change the carb from the other guys car then the thing was like a missile faulty carb from factory anyone else had simerlar problem.
PS they where both 1.1 engines.