Mitsubishi 4J1 Specs: 88 x 97 mm

Mitsubishi 4J1 specs: 88 x 97 mm (3.4646 x 3.8189 in) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.

At a glance

Displacement	144 ci
Cylinders	4
Bore	3.465"
Stroke	3.819"
Compression	10.5:1
Advertised power	167–184 hp
Years	2013–2016

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
4J12	144 ci	3.4646" × 3.8189"	10.5:1	167
4J1 (2013–2016)	144 ci	3.4646" × 3.8189"	—	184

Factory cars with a 4J1

• Dodge Dart: 2013, 184 hp; 2014, 184 hp; 2015, 184 hp; 2016, 184 hp

What varies across the family

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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