Hello Net and Ed Thanks for the encouragement. Today was a good day. Before going home yesterday I decided to scrap the square box manifold that was connecting the two pipes on top of the engine. At that point I started to construct a divider made of two 90 degree bends that are joined at one end giving a total end circumference of 2" to mate with 2' tubing. Each end of the bend going to the respective left or right manifold on the head. This morning I got the parts welded and went to the hanger to sever the square box manifold and join the new diverter to the system. After a few cuts to the old pipes, the addition of a few hoses and clamps, the engine was ready to restart. The engine seemed to run just as well, except that the extreme temperature spread between the left and right side was not as great. I decided to put the cowling on and see if the baffles would change the over heating condition. I'm happy to say that I have solved one problem and now on to the next issue. The cylinders were still very warm, except that there was no tendency for the #4 cylinder to run away, and actually the #3 cylinder was the hottest, which is usually the case and the temp spread for #'s 1,3 & 4 was no greater then 50. The #2 was cool and 100 Degrees lower then the others. I ran max power for over 7 minutes and never exceeded 410 degrees. My baffles were cut apart to fit the new pipes. I feel that once I remake them tomorrow, my engine will cool fine even on the ground on a day like today, 86 degrees and humid. My oil cooler is another issue. It is located in the factory position for type 2-4 engines and needs to have air deflected down into the cooling fins. I also plan to do this tomorrow. The next issue is the temp of the turbo locked inside the cowling. the skin was too hot to lay your hand on and leave it there. I plan to now look for some insulation material to protect the cowling. Suggestions are welcome. Some commercial aircraft use insulation blankets in the real hot areas. As for boosting, the gate is still wired shut and the engine was able to boost to 29.00" hg and the BP was 29.50. Once the baffles are tight I plan to play with the waste gate. If I have time tomorrow I will add a controllable cable to the gate to operate it from the cockpit.
Orma Southfield, MI N110LR celebrating 20 years To the gathering or bust
