Bristol Hercules radial airplane engine - by way of Pete Albrecht's web musings. Looks Like You'd Have to Change Oil Every 10 Minutes.

Bristol Hercules radial airplane engine - by way of Pete Albrecht's web musings. Looks Like You'd Have to Change Oil Every 10 Minutes.

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The 1935 Monaco Trossi. Twin Supercharged, 2 Bank/16 Cylinder Radial engine

The 1935 Monaco Trossi. Twin Supercharged, 2 Bank/16 Cylinder Radial engine

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When the Chrysler Hemi V-8 was introduced in 1951, its displacement was 331 ci, identical to the Cadillac. Coincidence, or a shot across Cadillac's bow? Chrysler's engineering staff went Cadillac one better in the compression wars, devising a hemispherical combustion chamber that could run on regular gasoline.

When the Chrysler Hemi V-8 was introduced in 1951, its displacement was 331 ci, identical to the Cadillac. Coincidence, or a shot across Cadillac's bow? Chrysler's engineering staff went Cadillac one better in the compression wars, devising a hemispherical combustion chamber that could run on regular gasoline.

Casting Number 706 and 862   Combustion Chamber Volume: 61.15cc  Compression Ratio: 9.5:1  Intake Port Volume: 200cc  Exhaust Port Volume: 70cc  Intake Valve Diameter: 1.89 inches  Exhaust Valve Diameter: 1.55 inches  Stock Head Flow Numbers  Chamber 61.15 cc----0.100--0.200--0.300-- 0.400--0.500---0.550---0.600  Intake 200 cc----------63 ---128----179-----210----218----221-----226  Exhaust 70 cc----------54 -- 93 ----121----145-----163----168----174

Casting Number 706 and 862 Combustion Chamber Volume: 61.15cc Compression Ratio: 9.5:1 Intake Port Volume: 200cc Exhaust Port Volume: 70cc Intake Valve Diameter: 1.89 inches Exhaust Valve Diameter: 1.55 inches Stock Head Flow Numbers Chamber 61.15 cc----0.100--0.200--0.300-- 0.400--0.500---0.550---0.600 Intake 200 cc----------63 ---128----179-----210----218----221-----226 Exhaust 70 cc----------54 -- 93 ----121----145-----163----168----174

409 v8 engine This is quite a unique design in that the combustion chamber is in the block and not in the head as the usual engines are.  This helped in keeping ping/knock down and using high compression as the combustion chamber was cooled more efficiently.

409 v8 engine This is quite a unique design in that the combustion chamber is in the block and not in the head as the usual engines are. This helped in keeping ping/knock down and using high compression as the combustion chamber was cooled more efficiently.

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