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Irving Vincent Four Valve Engine

davidd

Well Known and Active Forum Website User
VOC Member
Irving Vincent four valve head photos:


12512923876560.jpg


12512924990250.jpg


12512925723620.jpg


David
 

vibrac

Well Known and Active Forum Website User
VOC Member
Now compare that to the pictures on the other sidecar thread Tommos engine is from the original drawings by Phil Irving I think the Australian version has a little more 'input' (like most Vincents after 70 years) :)
 

davidd

Well Known and Active Forum Website User
VOC Member
Has the issue of valve seat retention in the head been solved?

I think the have. I do not know for a fact, but the seats were an issue very early on and I do not think they would take it to a race if they had not come up with a solution. I would love to know what it was.
 
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