Modelling engine wear and WEP limitations

[ICDP]

Originally Posted by Seadog

In Nov 1940, the Merlin XX was given "official" approval to use 12lb/3000rpm but strip inspections were not required after its use:

The Merlin 60 series engines were cleared for 15 and 18lb boost for combat and again strip inspections were not required after use:

An oil filter check was recommended, which probably took about 10mins.

The above data is from the Spit 9 Pilot's notes and from a Merlin 60 series maintenance manual.

Meaning that at some stage prior to the Merlin XX was introduced strip inspections were required after overboost was used. Good info, it seems +12lbs boost on the Merlin II, III and XII was limited to a short amount of time... oh I don't know, 5 minutes maybe