Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
As Bryan says, the F2 motor was the most powerfull SOHC CB750 motor, the bottom end is bullet proof and it's only the valve guides that are dodgy. Like all the CB750's they need regular oil and filter changes but apart from that they are very reliable.CheersDennis