I could assume that the spec pages are correct for a '79 320i, but can someone with a factory shop manual confirm that the valve sizes are correct. I only have Haynes and Chilton. The Haynes lists the intake valve at 46mm, the Chilton doesn't show that particular measurement at all, but the spec page lists 44mm. Which is correct? A good parts guy I know said his books should show what the factory specified, but I wouldn't mind a double-check. TIA.
Bill Wagner.
Bill Wagner.