Smilin' Jack
Well Known Member
I have just completed my 4 hour of my Phase one. I have a question regarding the above Title. inlet vs outlet.
I am using the horizontal induction system, I have only the 2 inlets on the engine cowling.
I also have a 4 pipe exhaust system and my drain tubes from the air/oil separater and a couple other drain tubes take up about 1 1/2 inch between the 4 pipes. that leaves about 5 to 6 square inches of space around the exit point of the cowling.
During taxi I notice the cylinder temperatures getting up to the 300 degree mark before the oil is getting up to the 120 and approaching 350 before the oil temp has reached the green arc.
Should I consider installing a louver on the bottom of the cowling to allow the low pressure air a more rapid to escape. During my takeoff, the temps are right up near 390 degrees and I have to really shallow up the climb to keep the temps below 390 even at a 130mph climb.
I would appreciate your thoughts on this. If I need to add a louver can you recommend a supplier for that.
Thanks for the input.
Smilin' Jack.
PS. I climbed up to 7500 feet yesterday over the airport and was indicating 176mph with a true of 196. Would you consider this average for an RV7 with
a 180hp engine and constant speed prop.
Thanks again.
I am using the horizontal induction system, I have only the 2 inlets on the engine cowling.
I also have a 4 pipe exhaust system and my drain tubes from the air/oil separater and a couple other drain tubes take up about 1 1/2 inch between the 4 pipes. that leaves about 5 to 6 square inches of space around the exit point of the cowling.
During taxi I notice the cylinder temperatures getting up to the 300 degree mark before the oil is getting up to the 120 and approaching 350 before the oil temp has reached the green arc.
Should I consider installing a louver on the bottom of the cowling to allow the low pressure air a more rapid to escape. During my takeoff, the temps are right up near 390 degrees and I have to really shallow up the climb to keep the temps below 390 even at a 130mph climb.
I would appreciate your thoughts on this. If I need to add a louver can you recommend a supplier for that.
Thanks for the input.
Smilin' Jack.
PS. I climbed up to 7500 feet yesterday over the airport and was indicating 176mph with a true of 196. Would you consider this average for an RV7 with
a 180hp engine and constant speed prop.
Thanks again.