Triumph 152ci Specs: 74.7 x 95 mm

Triumph 152ci specs: 74.7 x 95 mm (2.9400 x 3.7400 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	152 ci
Cylinders	6
Bore	2.940"
Stroke	3.740"
Advertised power	104 hp
Years	1969–1976

This engine

Engine	Displacement	Bore × Stroke	CR	HP
CC / CF	152 ci	2.94" × 3.74"	—	104

Factory cars with a Triumph 152ci

• Triumph TR6: 1969, CC / CF, 104 hp; 1970, CC / CF, 104 hp; 1971, CC / CF, 104 hp; 1972, CC / CF, 104 hp; 1973, CC / CF; 1974, CC / CF; 1975, CC / CF; 1976, CC / CF

What varies across the family

This family is represented by a single engine in the database: 152 ci, 6 cylinders, a 2.94" × 3.74" bore and stroke.

All are undersquare — stroke larger than bore, favouring torque low in the range.

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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