Antifreeze leak

[ralph92ZR1]

I would appreciate some advice. My Z is leaking antifreeze only when it runs, within 5 minutes, dripping below the lower cross-frame member. I have the front end up on jack stands, ran it, and cannot spot the leak. The telltale drip is on the underside cross member and I have used a mirror, light, etc to spot the source of the leak. I have checked all hose fittings, and to get to the hose entering the block, have removed the belt tensioner and serpentine belt. I cannot feel any leak around the water pump gasket or the water pump pulley, but have not removed the pulley itself. The small puddle inside the cross member is below the hose clamp on the hose entering the block but could also be below the water pump pulley-hard to tell. The pulley has no play in it and the mileage is only 19,000. So here are my questions:

Is it ok to run the engine briefly (5 minutes) without the belt to better view those areas??? WILL NOT ALLOW TO GO ABOVE 130 F.
Anything I have not thought of ???


Thanks for the advice