Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA1991MX-6 LX, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL2.2L 4-CYL & 2.2L 4-CYL TURBOENGINE SPECIFICATIONSCYLINDER HEAD SPECIFICATIONS

1991 Mazda MX-6 LX, Standard

Cylinder Head Specifications

1991 Mazda MX-6 LX, StandardSECTION Cylinder Head Specifications

CYLINDER HEAD SPECIFICATIONS

Application

Specification

Cylinder Head Height

3.620-3.624" (91.95-92.05 mm)

Maximum Warpage ⁽¹⁾

.006" (.15 mm)

Valve Seats

Intake Valve

Seat Angle

45°

Seat Width

.047-.063" (1.2-1.6 mm)

Exhaust Valve

Seat Angle

45°

Seat Width

.047-.063" (1.2-1.6 mm)

Valve Guides

Intake Valve

Valve Guide I.D.

B2200

.3177-.3185" (8.07-8.09 mm)

MX-6 & 626

.2760-.2768" (7.01-7.03 mm)

Valve Guide Installed Height ⁽²⁾

B2200

.752-.772" (19.10-19.61 mm)

MX-6 & 626

.780-.799" (19.80-20.30 mm)

Valve Stem-to-Guide Oil Clearance

.0010-.0024" (.025-.060 mm)

Exhaust Valve

Valve Guide I.D.

B2200

.3177-.3185" (8.07-8.09 mm)

MX-6 & 626

.2760-.2768" (7.01-7.03 mm)

Valve Guide Installed Height ⁽²⁾

B2200

.752-.772" (19.10-19.61 mm)

MX-6 & 626

.780-.799" (19.80-20.30 mm)

Valve Stem-to-Guide Oil Clearance

.0012-.0026" (.030-.065 mm)

⁽¹⁾	DO NOT remove more than .008" (.20 mm) material from original surface of cylinder head.

⁽²⁾	See Figure .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.