Originally Posted by
markk
I think you will still have the same problem.
What pressure was the previous cap rated too?
The system should not need to release under normal operation.
My pressure release was not set up correctly. There was no expansion from the highest point to let air out plus the pressure release was drilled at the top but the valve was designed to allow pressure out of the side. Initially there was no valve and the system was sealed. We thought the head may have been lifting on full boost but we don't think so now. Either way it will be sorted.