Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
My feeling is that the 400/4 was a later idea/development than the 750/500/550 fours, and experience from the earlier motors led the the cam spraying idea. Done from the design stage they probably hoped it would reduce problems and warranty claims and improve reliability. It would have been prohibitively expensive and disruptive to modify the heads of the earlier models in this way. Just my take on it.
Here's a photo of the cylinder head from my engine. The 'oil bath's sit between the cam bearings either side of the cam chain tunnel.
I do hope you were not exceeding the speed limit Julie! As a truck driver VOSA have just decided that they can do us for "Historic" offences up to a month old from a tachograph printout
Quote from: Bryanj on October 14, 2017, 12:34:08 PMI do hope you were not exceeding the speed limit Julie! As a truck driver VOSA have just decided that they can do us for "Historic" offences up to a month old from a tachograph printoutMoi, break the speed limit Bryan, never I only ever ride as fast as the road conditions and traffic volume allow. Today, the road conditions were perfect and there was no traffic on the roads.....the perfect combination to blow the cobwebs out
me too took my old fireblade for an mot this morning...les than a mile from my house just got in and ive clocked up 110 miles....
John,There is an oil bath of sorts in the 400 head directly below the camshaft. From memory I think only the cam lobes themselves dip into the oil in the bath as the cam spins. As the oil sprays out of the drillings from the spray bar over the cam it collects in the oil bath to a certain level. When the level is reached the oil runs back down into the engine. Maybe Julie has a photo of the top of the cylinder head to demonstrate the theory?