Should my outboard make steam?

-1983 Evinrude 25 horse. Bought it in non-running condition. I replaced a blown head gasket, and replaced the impellor, impellor housing, and gaskets. I ran the motor (without a prop, in neutral) in a tub of water. There were 3 places where water came out:



1. a rubber overflow tube under the gear shift know. it was room temp water.

2. the discharge port at the rear of the engine. it was pretty warm.

3. there were 2 holes at the front bottom of the middle unit. water came out here.



I never saw steam when running it in the tub.



Yesterday I was able to put the boat in a small pond. It's about the size of 2 tennis courts. There were alot of weeds, and I had to stop the motor a few times to clear the prop and push myself away from the bank. When I restarted the motor in the water, it would take a few seconds and I would see steam come out the 2 hot water discharge ports in the back. After a few seconds, I would see water spraying out along with some steam. Also, the water coming from the rubber overflow tube would be warm when steam was coming out the other port. Once there was a good flow of water coming from the hot water discharge port, the water coming from the rubber overflow tube would be the same temp as the pond.



I could not give it more than 1/4 or 1/3 throttle for more than 2 or 3 seconds because I would hit the bank.



Is the motors cooling system operating normally for the way I was running it?