Roger,
I have recently removed the airbox with the carb warming bypass and substituted K&N cone air filters in place of the airbox airfilter installation on my 912 uls. the airbox intake was routed to the front of the cowling. I now experience significantly higher oil and cylinder head temps.(as much as 15 deg C) higher. I have also noticed that the minimum idle speed has increased about 500 rpm.. IE the lowest idle speed I can achieve is around 1900rpm. I then have added air vents to the top of the cowling just in front of the carb air filters to facilitate cooler air from over the top of the cowling directly to the carbs, .. these vents showed no reduction in the temps. It seems to me unlikely that the airflow supply via the inside of the cowling as opposed to the old airbox supply set up is the cause of the increased temps-- although I may be wrong.. Any Ideas Roger ? what have I missed?
I have recently removed the airbox with the carb warming bypass and substituted K&N cone air filters in place of the airbox airfilter installation on my 912 uls. the airbox intake was routed to the front of the cowling. I now experience significantly higher oil and cylinder head temps.(as much as 15 deg C) higher. I have also noticed that the minimum idle speed has increased about 500 rpm.. IE the lowest idle speed I can achieve is around 1900rpm. I then have added air vents to the top of the cowling just in front of the carb air filters to facilitate cooler air from over the top of the cowling directly to the carbs, .. these vents showed no reduction in the temps. It seems to me unlikely that the airflow supply via the inside of the cowling as opposed to the old airbox supply set up is the cause of the increased temps-- although I may be wrong.. Any Ideas Roger ? what have I missed?
