The G&R 14P was very close to the 14R, alias 14N-50 for the 1938 Salon.
Differences with 14 N:
- Modified main crankcase (including a central crankshaft bearing)
- Larger diameter distribution and reducer housing
- Reinforced finning
- Compressor with 7 outlets, and twin inlet pipes (as 14 M or Alvis license for 14N).
- Some little tubes between rockers housings.
You can find in the magazine Plein Ciel some shots of the 14 P presented statically in various shows.
Wurger, all G&R 14K, 14N, 14P and 14R engines had same capacity.