page_title: Rolls-Royce Spey
section_title: Variants
hierarchical_section_title: Rolls-Royce Spey / Variants
caption_attribution_description: English: A Rolls-Royce Spey Mk 202 turbofan engine at the RAF Museum in London
context_page_description: The Rolls-Royce Spey is a low-bypass turbofan engine originally designed and manufactured by Rolls-Royce that has been in widespread service for over 40 years. A co-development version of the Spey between Rolls-Royce and Allison in the 1960s is the Allison TF41.
  Intended for the civilian jet airliner market when it was being designed in the late 1950s, the Spey concept was also used in various military engines, and later as a turboshaft engine for ships known as the Marine Spey, and even as the basis for a new civilian line, the Rolls-Royce RB.183 Tay.
  Aviation versions of the base model Spey have accumulated over 50 million hours of flight time. In keeping with Rolls-Royce naming practices, the engine is named after the River Spey.
context_section_description: RB.141
  RB.163-1
  RB.163-2
  RB.163-2W
  RB.163 Mk.505-5
  RB.163 Mk.505-14
  RB.163 Mk.506-5
  RB.163 Mk.506-14
  RB.163 Mk.511-8
  Gulfstream II and Gulfstream III (USAF designation F113-RR-100 for the Gulfstream C-20)
  RB.163 Mk.512-14DW
  BAC One-Eleven/Rombac One-Eleven
  AR 963
  (RB.163) Boeing 727 (proposed); it was to have been built under licence by Allison
  F113-RR-100
  US military designation for the Mk.511-8 engines fitted to the Gulfstream C-20.
  RB.168-62
  RB.168 Mk.101
  (Military Spey) Blackburn Buccaneer S2
  RB.168 Mk.202
  (Military Spey) McDonnell Douglas F-4 Phantom II modified F-4J for British service ("Phantom FG1"). (Surplus engines were purchased and used by Richard Noble for the Thrust SSC land speed record car of 1997.)
  RB.168 Mk.250
  (Military Spey) Hawker Siddeley Nimrod MR1/MR2
  RB.168 Mk.251
  (Military Spey) Hawker Siddeley Nimrod R1 and AEW
  RB.168 Mk.807
  AMX International AMX, built under licence by FiatAvio
  AR 168R
  Joint development with Allison Engine Company for the TFX competition (won by the Pratt & Whitney TF30
  RB.183 Mk 555-15 Spey Junior
  Fokker F28
  WS-9 Qinling
  Chinese license-produced copy of the RB.168 Mk.202 manufactured by the Xi'an Aero-Engine Corporation. It was used to power the Xian JH-7 and JH-7A. An improved WS-9A developing 97 kilonewtons (22,000 lbf) of thrust is reportedly in development.
caption: Rolls-Royce Spey Mk 202 at the RAF Museum in London
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