possibly you have BHG (blown head gasket) check out this thread

http://www.acura-legend.com/vbulletin/showthread.php?t=38831

 

if you changed all those parts cause of overheating, yeah a bhg may be the prob. are your fans coming on as they should (both)?

 

The black substance is no big deal. It look bad but operates normal. Check this post for an explanation.
http://www.acura-legend.com/vbulletin/showthread.php?t=39036&highlight=crank+angle+sensor

i just replaced the timing belt, water pump, thermostat, and radiator.

Make sure you have the correct radiator cap for your new radiator. Often the new radiator uses a different cap. If you have changed all those parts and don't have a leak in the system, the only thing left is the head gasket. Sorry.
Read these posts for my experiance with this dreaded problem.
http://www.acura-legend.com/vbulletin/showthread.php?t=35465&highlight=bhg+story

http://www.acura-legend.com/vbulletin/showthread.php?t=57658&highlight=bhg+story

 

Did you check for any Codes? Did you check your Idle? Does the car run rough? When cold, is the vehicle difficult to start? As mentioned the "black goo" is from the Crank/Cylinder Sensor.

Do both your fans work with the A/C on? Did you install an OEM thermostat with the bleed hole up?