scottp1111
Member
Hello,
I am not sure if there is already an open thread on this anywhere on the site im sure there probably is so I apologize in advance, please feel free to move this if its in the wrong place!
I have an RV-6 with a Lycoming O320 with the 4SPA carb and the standard Van's Cowl setup. I am experiencing stupid high CHT 450+ on takeoff from sea level. I am only indicating 12.5 GPH at best on my fuel flow, and we have good reason to believe this is not enough fuel to keep the engine cool. We have checked the timing and both Bendix mags are setup for 25 degrees and all intake leaks have been resolved and we are still dealing with this problem. I have had the carb rejetted with larger jets now stepping up each time with little or no improvment. Can anyone share some target numbers with me. Currently we are running a 1290 jet...
Thanks
Scott
I am not sure if there is already an open thread on this anywhere on the site im sure there probably is so I apologize in advance, please feel free to move this if its in the wrong place!
I have an RV-6 with a Lycoming O320 with the 4SPA carb and the standard Van's Cowl setup. I am experiencing stupid high CHT 450+ on takeoff from sea level. I am only indicating 12.5 GPH at best on my fuel flow, and we have good reason to believe this is not enough fuel to keep the engine cool. We have checked the timing and both Bendix mags are setup for 25 degrees and all intake leaks have been resolved and we are still dealing with this problem. I have had the carb rejetted with larger jets now stepping up each time with little or no improvment. Can anyone share some target numbers with me. Currently we are running a 1290 jet...
Thanks
Scott