Anyone make a heater core delete to plug the holes in the firewall?

Anyone every had a problem with heater core leaking at high rpms and on cool down? My at first was the clamps needed to be retorqued. Last night after racing the car, I shut it down and loaded it. This morning I had some water on the passenger floor mat. There was no evidence ot it running down the firewall though.


Any ideas?

Was it hot enough inside the trailer to cause condensation on the floor mat on that side? Keep an eye on your coolant level and see if it keeps going down.

I have never seen delete plugs for those before.

Its a open trailer. I'll check the coolant level. Running straight water right now.