24-04-14, 09:26 PM
Despite the ridicule this poor fellow is getting and being of the same vintage, I know he is partially correct. There were issues with some of the older engines mostly singles with regards the design of the oiling of the cam shaft and valve train. If left on the side stand and then started the right side was starved of oil because the oil had drained away as there were no places to hold the oil until the oil pressure built up after starting. It eventually caused the cam or valve train to seize. However if they were started when upright there was sufficient oil within the cam and/or valve train to feed the bearings while the oil pressure built up
Particular dodgy ones were the early 1970s Honda OHC singles. The cam ran directly on the flat machined alloy head with no slots to hold the oil and it drained away from the area when on the side stand. Eventually the head and/or valve train or cam could be junk. Some enterprising fellows machined brass inserts to fit if the cam, head and or valve gear were salvageable.
Thankfully it is no longer an issue nowadays.
In reply to the problem with the TDM and the TRX before it was that it had a dry sump and many did not fill them or check them for oil properly. Some were inclined to burn oil and left run low on oil, which many owners did as they were unsure or did not know how to check the oil level properly. With the oil low and then if it was left idling on the side stand you could starve the pick up of oil and destroy the cam or crank.