Over view:

Car started running hot so popped the hood and noticed my top radiator hose was swelling and lower one was cold.

Bought a Honda thermostat and changed it out and it's still doing the same.

I'm leaning towards air in the system since I changed out my radiator but I did that over a month ago and never had an issue till two days ago.

Chime in if anyone has had this issue.

 

Could be air. These things are a pita to get completely air free.

 

Rebleed the system and see if it continues.

 

You may have a minor leak that is allowing pressure to escape. This will cause circulation problems, which shows the same symptoms of a bad thermostat (upper hose hot and swollen, lower hose cold and not as pressurized).

 

Have you tried Billman's coolant bleed procedure?

https://www.s2ki.com/s2000/topic/106...coolant-bleed/

 

So it is leaking from the thermostat housing. I've tried to seat this thing 3 times. Gonna give it another go tomorrow

 

Sweet! 3rd gasket was the charm!

 

sweet... so, are you back up and running now..

 

Yes sir. This car is a PITA to bleed the air out though.