Quote:
Originally Posted by Viper2000
No - 87 octane limited the engine to +6.5. In this period, the boost control cutout was a safety feature to permit the pilot to manually control the throttle valves if the ABC failed. Fully opening the throttle at sea level static would give about +17 psi boost. This would be very bad for the engine.
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The Merlin III was allowed the use of 16lb boost on the Sea Hurricane IB, so I doubt that 17lb boost would be instantly fatal with 100 octane fuel, but with 87 octane bad things would happen.