Run accelerator recipes on non standard ports

I'd like to set up some demo's of accelerators running remotely that people across our business units can use to check out hybris 6. Question. What change do I need to make to get them running on ports 80 and 443 rather than 9001 and 9002? I thought changing tomcat.http.port in the project.properties would do it but it doesn't appear so. Any thoughts?