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Ok, so it's not enough to just rebuild the engine and get it back on the airplane in good working order...  We decided to take advantage of the fact that everything was off the front of the airplane and add a couple of well needed project to the task list.

  1. Replace the baffling with a Plenum Box
  2. Reshape the Nose Bowl

Click on the above sections to see the details.

Plenum Box

Since the baffles were in bad shape anyway, why not spend a little extra time fabricating a fully enclosed Plenum Box to replace them and realize some additional benefits:

Improve the engine cooling
Replace the tacky, beat up baffles
Weak baffle in lower front of engine
Eliminate strangely arranged bracing
Eliminate excess air from escaping elsewhere
Increase cruise speed... not that we're racing anyone
Just plain looks cool!!

Nose Bowl

Since the air opening is different with the Plenum Box, we needed to reshape the Nose Bowl

Fit the air intakes to the new plenum box for more efficient airflow 
Make the nose a little more aerodynamic 
Reduce the size of the opening for airflow 
Take some height off the top of the cowling 
Remove the split in the top of the bowl and make a stronger one piece unit 
Relocate the oil cooler to a more efficient position
 

 

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