Editing Napier Lion (section)

==Variants==

{| class="wikitable"
|-
|+ Lion models<ref>Vessey 1997</ref><ref name="Flight, 27 June 1958, Napier Lion" >{{cite journal
  |journal=[[Flight (magazine)|Flight]]
  |title=Napier Aero-Engines
  |url=http://www.flightglobal.com/pdfarchive/view/1958/1958%20-%200877.html
  |date=27 June 1958
  |volume=73
  |number=2579
  |page=893
  |ref=Flight, 27 June 1958, Napier Lion
}}</ref>
|-
! Model !! Date !! Works No. !! Power !! Notes !! Notable uses
|-
| I || 1918 || || {{convert|450|bhp|kW|abbr=on}} at 1,950 rpm || geared, also related IA and 1AY ||
|-
| II || 1919 || E64 || {{convert|480|bhp|kW|abbr=on}} at 2,200 rpm || ||
|-
| III || || ||geared high compression||||[[Vickers Vernon]] Mk.III
|-
| IV || || ||experimental geared||||[[Gloster Gorcock]]
|-
| V || || || {{convert|470|bhp|kW|abbr=on}} at 2,000 rpm<br /> {{convert|500|bhp|kW|abbr=on}} at 2,250 rpm || VA had increased CR to 5.8  || Mainstay engine of the RAF in the late 1920s, replaced by Lion XI
|-
| VS || || E79 || || Turbocharged, intercooled
|-
| VIS || 1927 || || || Turbocharged || [[Gloster Guan]]
|-
| VII || 1925 || || {{convert|700|bhp|kW|abbr=on}} (racing) || || [[Gloster III]] (Schneider Trophy entrant)<br />[[Supermarine S.4]]
|-
| VIIA || 1927 || E86 || {{convert|900|bhp|kW|abbr=on}} (racing)|| || [[Golden Arrow (land speed racer)|Golden Arrow]] <br />[[Napier-Campbell Blue Bird|Blue Bird (1927)]] <br />[[Miss England I]] <br />[[Supermarine S.5]]<br />[[Gloster IV]]
|-
| VIIB || 1927 || || {{convert|875|bhp|kW|abbr=on}} (racing) || geared || [[Supermarine S.5]]<br />[[Gloster IV]]
|-
| VIID || 1929 || E91 || {{convert|1350|bhp|kW|abbr=on}} at 3,600 rpm (racing) ||Supercharged, about 6–8 built  || [[Campbell-Napier-Railton Blue Bird|Blue Bird (1931)]] <br />[[Fred H Stewart]]'s ''Enterprise''  <br />[[Betty Carstairs]]' ''Estelle V'' powerboat <br />[[Miss Britain III]] <br />[[Gloster VI]] (Schneider Trophy entrant)<br />[[Railton Special]] (John Cobb's land speed record car)
|-
| VIII ||1927 ||  || || direct drive || [[Gloster Gorcock]]
|-
| XIA || 1928 || || {{convert|580|bhp|kW|abbr=on}} at 2,585 rpm, 6:1 CR || RAF production model || [[Napier-Railton]]
|-
| Lioness || || E71 || || Inverted layout, for better visibility. At least some were built turbocharged, for racing. ||
|-
| Sea Lion ||1933 ||  || {{convert|500|and|600|bhp|kW|abbr=on}} || Marine version of Lion XI || [[British Power Boat Company Type Two 63 ft HSL]]
|}