TERSE OVERVIEW OF V4 LINEAGE
		----------------------------


Here's how I conceptualize the V4 lineage.
It is based strictly on engine evolution (in the North American models)
and has nothing to do with cosmetics, body styling, single vs dual 
headlights, etc etc etc.  Minor engine characteristics such as cam profiles, 
valve sizes, are also too insignificant to matter.

1st Generation:  began with 1982 V45 VF750 Sabre, Magna
	Chain driven cams, forked rocker arms actuate a pair of valves each,
	shaft final drive, nearly vertical/horizontal cylinder orientation.
        Eventually included V65 VF1100 Sabre and Magna,
	and V30 VF500 Magna as well.
2nd Generation:  began with 1983 V45 VF750 Interceptor
	Chain final drive, engine turns opposite direction, cylinder
	orientation tipped back.
	Eventually included VF1000 Interceptor and VF500 Interceptor as well.
3rd Generation:  began with VF1000R; mainly seen in 1986 VFR 750 Interceptor.
	Gear driven cams.  One rocker arm per valve.
4th Generation:  began with the 1990 VFR750F
	Gear driven cams.  Direct valve actuation with shim under bucket.


Further details such as 180 vs 360 degree crank can be added
but this set of factors should be sufficient.

To complicate matters, the progression is not a single line.
For example, the current Magna motors have shim under bucket
valve actuation but use chain driven cams. They're an offshoot 
of the 4th generation motor.

Then there's the ST1100 motor, a longitudinal V4, which probably
gets a category for itself.