I have a James cowl over a James Plenum with a Superior IO320, a 9:1 compression running a 3 blade Catto prop. I've got 9 hours on the engine. The plenum seems to work too efficiently. Cylinders 1 and 3 run very cool, about 200 degrees for 1 and about 250 for 3. The James Plenum on the right side directs the incoming air directly into 1 and 3. On the left side 2 and 4 run at normal temps of between 325 and 350 as the incoming air is partially blocked and directed over the cylinders
Have any other James plenum owners experienced the same problem? Do I need to add some baffling in the right intake to cut down some of the incoming air. In addition, I remotely located a 13 row oil cooler behind and below the #4 cylinder. It's working too efficiently as my oil temps won't rise above 160 degrees. What's the best solution for raising the oil temp?
Have any other James plenum owners experienced the same problem? Do I need to add some baffling in the right intake to cut down some of the incoming air. In addition, I remotely located a 13 row oil cooler behind and below the #4 cylinder. It's working too efficiently as my oil temps won't rise above 160 degrees. What's the best solution for raising the oil temp?