Mercury Lima Specs: 3.78 x 3.126 in

Mercury Lima specs: 3.78 x 3.126 in (96 x 79.4 mm) bore and stroke, shared by all 3 versions. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	140 ci
Cylinders	4
Bore	3.780"
Stroke	3.126"
Compression	8.0–9.0:1
Advertised power	88–155 hp
Years	1981–1986

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
2.3L I4	140 ci	3.7795" × 3.126"	9:1	88
2.3L Turbo I4	140 ci	3.7795" × 3.126"	8:1	145
Lima (1981–1986)	140 ci	3.7795" × 3.126"	—	88–155

Factory cars with a Lima

• Mercury Cougar: 1981, 88 hp; 1984, 145 hp; 1985, 155 hp; 1986, 155 hp

What varies across the family

All are oversquare — bore larger than stroke, which favours revs over low-end torque.

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.

← All Mercury engines