I have an asi gt4 radiator in my 162 Now it came with a 1.1kg/cm radiator cap (15.4psi) Now the bloody thing is forcing coolant out the top of the overflow and through all my low pressure heater hoses Is 15.4 psi pressure to much for the 162's as I was reading the standard ones are 0.9kg/cm (13psi/90kpa) Help would be greatly appreciated