Bubblehead
Well Known Member
My 4 new cylinders are doing great. CHTs are around 380 even in the hot weather, although at altitude and <75% power when I lean the engine they rise to about 410. My oil temperature is causing me some concern though. It goes up to 230 and I have to level off from climb and reduce power to 2200/22" and wait about 10 minutes to let the temp get down to 210.
Today I pulled the Vernatherm and will test it tonight to see if it "grows" to the right length at the right temperature. After I pulled it I looked over the oil cooler installation and hoses to see what else might be causing problems. I may have longer hoses than are necessary which may be causing or allowing air bubbles in the hoses that may be slowing flow that may be.... You get the picture.
Here's a picture looking from the left side of the airplane with the corner of the standard Vans cooler in the lower left. The braided line and the black line just below it are the cooler in and out.
Do you think the humps are causing problems? If I redo the hoses to eliminate the humps the oil cooler will be the high point of the system and I may just be moving any air from the hoses to the cooler. There is no way to vent the line anywhere so I am not sure how to be sure there are no air bubbles.
Today I pulled the Vernatherm and will test it tonight to see if it "grows" to the right length at the right temperature. After I pulled it I looked over the oil cooler installation and hoses to see what else might be causing problems. I may have longer hoses than are necessary which may be causing or allowing air bubbles in the hoses that may be slowing flow that may be.... You get the picture.
Here's a picture looking from the left side of the airplane with the corner of the standard Vans cooler in the lower left. The braided line and the black line just below it are the cooler in and out.
Do you think the humps are causing problems? If I redo the hoses to eliminate the humps the oil cooler will be the high point of the system and I may just be moving any air from the hoses to the cooler. There is no way to vent the line anywhere so I am not sure how to be sure there are no air bubbles.