Porsche 143ci Engine Specs

Bore, stroke, displacement and compression for all 4 Porsche 143ci engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	143 ci
Cylinders	6
Advertised power	140–190 hp
Years	1972–1973

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
911/51, 911/61	143 ci	—	—	140
911/52, 911/62	143 ci	—	—	157–165
911/53, 911/63	143 ci	—	—	181–190
911/91, 911/96 - US/CDN	143 ci	—	—	140

Factory cars with a Porsche 143ci

• Porsche 911: 1972, 140 PS; 1972, 165 PS; 1972, 190 PS; 1973, 140 PS; 1973, 157 hp; 1973, 181 hp

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

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