Mazda KL-DE Specs: 84.5 x 74.2 mm (3.3268 x 2.9213 in), 160-170 hp

See other engines in this family

Mazda KL-DE specs: 2.497L (152.4 ci) 6-cylinder, 84.5 x 74.2 mm (3.3268 x 2.9213 in) bore and stroke. Rated 160-170 hp, 1993–2002. Used in the Mazda 626.

The Mazda KL-DE is oversquare — the 3.3268" bore exceeds the 2.9213" stroke by 13.9% — a layout that favors airflow and RPM over leverage at the crank. The 2.9213" stroke does not reach 4,000 ft/min of mean piston speed until about 8,200 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 25.4 ci (416 cc).

It is one of 4 engines in the K-Series family, the largest at 152.4 ci. 15 factory variants share these dimensions, rated from 160 to 170 hp across 1993–2002.

Dimensions

Displacement	152.4 ci / 2.497 L
Bore	3.3268"
Stroke	2.9213"
Cylinders	6
Configuration	V6
Compression ratio	9.2–9.5:1 (published figures vary)
Bore/stroke ratio	1.139

Construction

Block material	aluminum
Head material	aluminum
Valvetrain	DOHC
Fuel type	gas
Advertised HP	160–170 hp
Years	1993–2002

Factory ratings by year

Year	Version	HP @ rpm	Torque @ rpm	Comp.
1993	KL-DE net	164 @ 5600 *	160 lb-ft @ 4800 *	9.2:1 *
1998	KL-DE net	170 @ 6000 *	163 lb-ft @ 5000 *	9.5:1 *

Factory specification sheet. * Not yet cross-verified.

What these numbers mean

Bore/stroke character	1.139 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	2,921 ft/min — conservative for a street engine
Displacement per cylinder	25.4 ci

Run the numbers for this engine

Each link opens the calculator with this engine's specs already filled in.

• Displacement from bore and stroke (calculator)
• Static and dynamic compression ratio calculator
• Piston ring gap for this bore
• Piston speed at any RPM
• Horsepower to torque at any RPM
• What size carburetor (CFM calculator)

Variants sharing these dimensions (15)

These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.

Year	Advertised HP	Code
1993	164 hp	KL-DE
1994	164 hp	KL-DE
1995	164 hp	KL-DE
1995	170 hp	KL-DE
1996	160 hp	KL-DE
1996	170 hp	KL-DE
1997	—	KL-DE
1997	164 hp	KL-DE
1997	170 hp	KL-DE
1998	170 hp	KL-DE
1999	170 hp	KL-DE
2000	170 hp	KL-DE
2001	—	KL-DE
2001	170 hp	KL-DE
2002	170 hp	KL-DE

What cars have the KL-DE?

3 factory vehicles, 1993–2002. Each year opens that model's engine table.

• Mazda 626: 1993, 164 hp; 1994, 164 hp; 1995, 164 hp; 1996, 160 hp; 1997, 164 hp; 1998, 170 hp; 1999, 170 hp; 2000, 170 hp; 2001; 2002, 170 hp
• Mazda MX-6: 1993, 164 hp; 1994, 164 hp; 1995, 164 hp; 1996, 160 hp; 1997
• Mazda Millenia: 1995, 170 hp; 1996, 170 hp; 1997, 170 hp; 1998, 170 hp; 1999, 170 hp; 2000, 170 hp; 2001, 170 hp; 2002, 170 hp

Similar engines

• Mazda KL-ZE — 152.4 ci
• Mazda KL DE V6 — 152.4 ci
• Mazda KJ-ZEM — 137.6 ci
• Mazda PY-VPS — 152.5 ci
• Mazda PY-VPTS — 152.5 ci
• Mazda L5-VE — 152 ci
• Audi DAZA, DNWA — 152.4 ci
• Audi DAZA / DNWA — 152.4 ci

← All K-Series engines