Ford 121ci Specs: 3.339 x 3.465 in

Ford 121ci specs: 3.339 x 3.465 in (84.8 x 88 mm) bore and stroke, shared by all 5 versions. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	121 ci
Cylinders	4
Bore	3.339"
Stroke	3.465"
Compression	9.6–10.2:1
Advertised power	110–170 hp
Years	1995–2004

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
Zetec 2.0 DOHC 16v	121 ci	3.3386" × 3.4646"	9.6:1	125
Zetec 2.0	121 ci	3.3386" × 3.4646"	9.6:1	127–130
SPI2000	121 ci	3.3386" × 3.4646"	—	110
SPI 2.0	121 ci	3.3386" × 3.4646"	—	110
Zetec-R	121 ci	3.3386" × 3.4646"	10.2:1	170

Factory cars with a Ford 121ci

• Ford Contour: 1995, 125 hp; 1996, 125 hp; 1997, 125 hp; 1998, 125 hp; 1999; 2000
• Ford Escort: 1997, 110 hp; 1998, 110 hp; 1998, 130 hp; 1999, 110 hp; 1999, 130 hp; 2000, 110 hp; 2000, 130 hp; 2001, 110 hp; 2001, 130 hp; 2002, 110 hp; 2002, 130 hp; 2003, 130 hp
• Ford Focus: 2000, 110 hp; 2000, 130 hp; 2001, 110 hp; 2001, 130 hp; 2002, 110 hp; 2002, 130 hp; 2002, 170 hp; 2003, 110 hp; 2003, 130 hp; 2003, 170 hp; 2004, 110 hp; 2004, 130 hp; 2004, 170 hp
• Ford Escape: 2001, 127 hp; 2002, 127 hp; 2003, 127 hp; 2004, 127 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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