Peter,
Well, it's partially because that engine got the new head 10kmi ago. While it was apart I scrubbed everything in sight. It has stayed pretty clean since then, and a periodic pressure-wash at the coin-op car wash works wonders. I always cover the two electrical switches & senders at the water neck up front, they get cranky when wet (aux fan stays on high all the time). If your engine compartment has been attacked by rust (north east or coastal environment), it may be impossible to EVER get your engine looking like this California engine... pesky corrosion is tough to get rid of!
