I drove the van on the highway for a while today (30 miles) and took a
reading with my cool new infrared thermostat, and here were the results:

Crossover Pipe: 199 deg
Engine case from underneath (near the center) as high as 210 deg
Radiator, top passenger side, 180
Radiator, near fan switch, (may not be  a clean reading) 160

After another 30 miles, I tried again, and the results were as follows.  I
assume that this means that the thermostat had closed:

Crossover Pipe: 198 deg
Engine case from underneath (near the center) as high as 202 deg
Radiator, top passenger side, 140
Radiator, near fan switch, (may not be  a clean reading) 120

Bently says that the thermostat does not even fully open until 221 deg, so I
assume that the van is running just about right at the observed temps.

Anybody have specific knowledge about this?

Thanks,
Peter