I only replied to a post which had factual errors about guzzi's. Just like most on here would do if they saw a factual error about Nortons.
The factory never made any 1000cc bikes other than the Daytonas - the ones marked as such were actually 949 or 972cc.
The dynamo was never fitted to any 950 bikes either. Various Loop Frame models, with 700, 750 and 850 had dynamos. The replacement, the seminal V7 Sport came with the alternator and Tonti frame in 1971.
Every wet sump motor (there are billions to choose from) will do the whirling oil trick. Sure an oil scraper or screen would help, and these are available now in the aftermarket for guzzi's.
As I have already said twice now, the sump extension was not for greater oil capacity, but to increase the crankcase volume so the peak crank case pressure was reduced. The spacer worked, but only if you used the same amount of oil. Any extra would be blown out the breather.
The engine was designed as a 700cc, increasing the swept volume +30% without any change to the crankcase breathing or addressing the different pressure differentials was dumb.
There is plenty of oil in a road going guzzi engine with the 3 litres in. The oil pick up is in the bottom of the sump. The suck side of the oil pump is only about 1 1/2" above the base of the pan.
Guzzi's otherwise had pretty decent oil control. They don't generally burn much oil, so you don't need to put any extra in "for luck". My bike can do a 3000 mile jaunt round France. Blatting over as many passes as I can fit in. The 180 miles from Dover to home is usually done at max available thrust. Oil still not be at the bottom of the mark. And ready to take me to work next morning.
My bike has done 160,000 miles now. Will hold any speed it can make - indicated 130ish, maybe 115 to 120? - for as long as there is fuel in the tank. Reliability and durability is like a big V8, a good one at that, just keeps on keeping on.
There is a list of irritating stuff which the factory could have done at almost no cost, but never did on the Tonti bikes at least.
It would have been much better if guzzi had added scrapers or a screen and used a proper crankcase ventilation system, but maybe they never saw that high speed film made by GM. I'm sure something like Jim Comstock's idea, using a reed valve would work wonderfully.
The guzzi's are a mechanical device and behave as such, they occasionally break down or succumb to an inherent design weakness. Just like any and every other mechanical device.
