What sort of temp's are you getting (related to ambient)? My 1.8@2.57 is almost 10 degrees (c) lower under load with water cooling than with good (large all copper) air cooling.
With an ambient of 24c and air cooling it idles at 38c and load is 48c
With a coolant temp of 24c and water cooling it idles at 35c and load is 39c
when I iced the water down to below 20c it was stable at 2.61,(windows wouldn't post at 2.67) as soon as the coolant rose to 23-24 it became un-stable.
just my experience...
|