25-07-2018, 12:03 AM
My tourer was pumping out smoke worthy of a WWI naval exercise. This on an engine which had not completed too many miles (I believe) after an engine rebuild seven years ago. I believe it was not run in correctly.
I deglazed the very shiny bores and replaced the rings on the slipper pistons.
I have used Comma oil and frequent oil changes.
1500 miles now, no smoke, maybe 1/4 pint oil consumption every 200 miles. That I suspect is from some crankcase compression blowing a little oil out the filler tube. I expect that to improve.
Interestingly, before the strip down, cylinder compressions were good, approx 110 psi.
I have not yet measured the compressions since, but immediately after the rebuild the engine felt immeasurably better ascending the unavoidable hill from my house.
Yes Pre War Prescott was good!
Roly
I deglazed the very shiny bores and replaced the rings on the slipper pistons.
I have used Comma oil and frequent oil changes.
1500 miles now, no smoke, maybe 1/4 pint oil consumption every 200 miles. That I suspect is from some crankcase compression blowing a little oil out the filler tube. I expect that to improve.
Interestingly, before the strip down, cylinder compressions were good, approx 110 psi.
I have not yet measured the compressions since, but immediately after the rebuild the engine felt immeasurably better ascending the unavoidable hill from my house.
Yes Pre War Prescott was good!
Roly
1931 RN, 1933 APD