[san rensho]

Looks like its the water pump. Take the engine cover off behind the seats and take the serp belt off. Check the WP for play at the pulley and for leaks. If it is loose, i wouldn't drive it, have it replaced right away. The WP impeller tends to dissintegrate, sending pieces of plastic throught the water passages which can cause blockages which can lead to cracked heads from overheating. While you're at it, replace the motor mount.