Injector Pressure for 2.5NA Diesel?

Does anyone know the correct injector nozzle opening pressure for the 2.5L naturally aspirated diesel engine?

I have a 1989 One Ten and recently had the Lucas CAV injectors cleaned and replaced the nozzles. The injectors were previously set around 150Ats (2200psi), but the workshop manual I have specifies 135Ats (2000psi). When I had the nozzles set down to 2000psi the timing was messed up due to the lower pressure. The manual I have covers the 2.25 and 2.5NA diesels and does not list different pressures for each. The nozzles are the same but I don't know if the pressure should be different for the 2.5NA.

I live in Central America and the injector shops here do not have information on correct pressures.

Thanks

In myLR manual it states 135 Atm for 2.5 na diesel.Hope this helps.