Main Motorcycle: 1999 T'Bird Sport
Join Date: Apr 2007
Location: Rangiora, New Zealand
Extra Motorcycle: 1977 T140
|Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.|
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I assumed the return outlet was also going to be moved above the oil full level at the top of the frame.
Part of the experiment will be oil seepage back past the rocker spindles, how much, over what period of time (hot & cold).
Here's some rough estimate figures.If I'm out by a power of ten,the effect is much the same but it takes 10 times longer.
With a 6" head of oil above the spindles,say you get one drop of cold oil off each spindle every 4 seconds.Total leakage is approx 3ml/minute or 4.32 litres per day.Of course,it will be slower when you only have 3" head of oil remaining (a little over 2ml/minute total).
There will be plenty of extra oil in the crankcase when you go to start the engine.Even 500 ml extra is a lot (much exhaust smoke).
It will take about 2 minutes at 3000 rpm to lower the crankcase oil level by 500 ml.If the oil level is then correct,things will run fine until you stop and the leakage/drainage begins again.
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