Contents Wiring diagrams Section: Mechanical All sections

2.5L V6: Specifications Mazda MX-6 I

Crankcase Capacity

Crankcase capacity with oil filter is 5.2 qts. (4.9L).

GENERAL ENGINE SPECIFICATIONS

ApplicationSpecification
Displacement153 Cu. In.
Bore3.33" (84.5 mm)
Stroke2.92" (74.2 mm)
Compression Ratio9.2:1
Fuel SystemPFI
Horsepower @ RPM164 @ 5600
Torque Ft. Lbs. @ RPM160 @ 4800

GENERAL ENGINE SPECIFICATIONS

CONNECTING RODS SPECIFICATIONS

ApplicationIn. (mm)
Pin Bore Diameter.7852-.7858 (19.943-19.961)
Crankpin Bore Diameter2.2047-2.2053 (56.000-56.015)
Center-To-Center Length5.426-5.429 (137.80-137.90)
Maximum Bend.002 Per 1.969 (.05 Per 50.01)
Side Play
Standard.0070-.0130 (.178-.330)
Maximum.016 (.40)

CONNECTING RODS SPECIFICATIONS

PISTONS, PINS & RINGS SPECIFICATIONS

ApplicationIn. (mm)
Pistons
Clearance
Standard.0011-.0022 (.028-.056)
Maximum.005 (.13)
Diameter3.3250-3.3261 (84.453-84.485)
Pin Bore Diameter.7869-.7874 (19.988-20.000)
Pins
Diameter.7863-.7866 (19.974-19.980)
Piston Fit.0003-.0010 (.008-.025)
Rod Fit (Interference Fit).0005-.0015 (.013-.038)
Rings
No. 1
End Gap (1).006-.011 (.15-.28)
Side Clearance (2).0008-.0026 (.020-.065)
No. 2
End Gap (1).010-.015 (.25-.38)
Side Clearance (2).0012-.0026 (.030-.065)
No. 3 (Oil)
End Gap (1).008-.028 (.20-.70)
Side Clearance (2).0010-.0020 (.025-.052)
(1) Maximum end gap is .040" (1.0 mm). (2) Maximum side clearance is .006" (.15 mm).
(1)Maximum end gap is .040" (1.0 mm).
(2)Maximum side clearance is .006" (.15 mm).

PISTONS, PINS & RINGS SPECIFICATIONS

CYLINDER BLOCK SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore
Standard Diameter3.3268-3.3276 (84.500-84.522)
Maximum Taper.0008 (.022)
Maximum Out-Of-Round.0008 (.020)
Maximum Deck Warpage.006 (.15)

CYLINDER BLOCK SPECIFICATIONS

VALVES & VALVE SPRINGS SPECIFICATIONS

ApplicationSpecification
Intake Valves
Face Angle45°
Head Diameter1.253-1.265" (31.85-32.15 mm)
Minimum Margin.035" (.90 mm)
Valve Length
Standard3.6970" (93.91 mm)
Minimum3.6775" (93.41 mm)
Stem Diameter
Standard.2350-.2356" (5.970-5.985 mm)
Minimum.2331" (5.920 mm)
Exhaust Valves
Face Angle45°
Head Diameter1.080-1.092" (27.45-27.75 mm)
Minimum Margin.039" (1.00 mm)
Valve Length
Standard3.7400" (94.99 mm)
Minimum3.7200" (94.49 mm)
Stem Diameter
Standard.2348-.2354" (5.965-5.980 mm)
Minimum.2329" (5.915 mm)
Valve Springs
Free Length1.847" (46.92 mm)
Out-Of-Square.064" (1.63 mm)
Lbs. @ In. (kg @ mm)
Pressure
Intake & Exhaust Valve52-59 @ 1.524 (23-27 @ 38.70)

VALVES & VALVE SPRINGS SPECIFICATIONS

CYLINDER HEAD SPECIFICATIONS

ApplicationSpecification
Cylinder Head Height5.252-5.260" (133.40-133.60 mm)
Maximum Warpage (1)
Cylinder Block Surface.004" (.10 mm)
Manifold Surface.004" (.10 mm)
Valve Installed Height
Standard1.634-1.653" (41.5-42.0 mm)
Serviceable1.658-1.693" (42.1-43.0 mm)
Valve Seats
Intake Valve
Seat Angle45°
Seat Width.031-.055" (.79-1.40 mm)
Exhaust Valve
Seat Angle45°
Seat Width.031-.055" (.79-1.40 mm)
Valve Guides
Intake Valve
Valve Guide I.D..2366-.2374" (6.01-6.03 mm)
Valve Guide Installed Height.579-.602" (14.7-15.3 mm)
Valve Stem-To-Guide Oil Clearance
Standard.0010-.0024" (.025-.060 mm)
Maximum.008" (.20 mm)
Exhaust Valve
Valve Guide I.D..2366-.2374" (6.01-6.03 mm)
Valve Guide Installed Height.480-.504" (12.2-12.8 mm)
Valve Stem-To-Guide Oil Clearance
Standard.0012-.0026" (.030-.065 mm)
Maximum.008" (.20 mm)
(1) DO NOT remove more than .006" (.15 mm) material from original surface of cylinder head.
(1)DO NOT remove more than .006" (.15 mm) material from original surface of cylinder head.

CYLINDER HEAD SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

ApplicationIn. (mm)
End Play
Standard.0020-.0039 (.050-.099)
Maximum.0055 (.140)
Journal Runout.0008 (.020)
Journal Diameter (1) (2)
No. 1 Journal
Left Exhaust Camshaft
Standard1.1801-1.1809 (29.975-29.995)
Minimum1.1781 (29.925)
Left Intake Camshaft
Standard1.0213-1.0220 (25.940-25.960)
Minimum1.0193 (25.890)
Right Exhaust Camshaft
Standard1.0213-1.0220 (25.904-25.960)
Minimum1.0193 (25.890)
Right Intake Camshaft
Standard1.1801-1.1809 (29.975-29.995)
Minimum1.1781 (29.925)
No. 2, 3 & 4 Journals
Standard1.1021-1.0209 (25.910-25.930)
Minimum1.0181 (25.860)
No. 5 Journal
Standard1.0213-1.0220 (25.940-25.960)
Minimum1.0193 (25.890)
Oil Clearance (2)
No. 1 & 5 Journals
Standard.0016-.0032 (.040-.081)
Maximum.0047 (.120)
No. 2, 3 & 4 Journals
Standard.0028-.0044 (.070-.111)
Maximum.0059 (.150)
Lobe Height
Exhaust
Standard1.7145 (43.549)
Minimum1.7067 (43.349)
Intake
Standard1.7145 (43.549)
Minimum1.7067 (43.349)
(1) Left and right as viewed from rear of engine. (2) No. 1 journal is timing belt end. No. 5 journal is flywheel end.
(1)Left and right as viewed from rear of engine.
(2)No. 1 journal is timing belt end. No. 5 journal is flywheel end.

CAMSHAFT SPECIFICATIONS

HYDRAULIC LASH ADJUSTERS SPECIFICATIONS

ApplicationIn. (mm)
Oil Clearance
Standard.0010-.0026 (.025-.066)
Maximum.0071 (.180)

HYDRAULIC LASH ADJUSTERS SPECIFICATIONS

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
A/C Compressor Bracket Bolt27-38 (37-52)
Axle Shaft Bracket-To-Cylinder Block Bolt31-46 (42-62)
Baffle Plate Bolt14-19 (19-26)
Camshaft Sprocket Bolt90-103 (122-140)
Clutch Release Cylinder Bolt (M/T)12-17 (16-23)
Connecting Rod Bolt
Step 116-19 (22-26)
Step 2Additional 83-97 Degrees
Coolant Outlet Bolt14-19 (19-26)
Crankshaft Pulley Bolt116-123 (157-166)
Cylinder Head Bolt (1)
Step 117-19 (23-26)
Step 2Additional 85-95 Degrees
Engine-To-Transaxle Case Bolt50-73 (68-99)
Engine Mount Bracket Above Water Pump-To-Cylinder Block Bolt32-45 (43-61)
Engine Mount Crossmember Retaining Bolt/Nut50-68 (68-93)
Engine Mount-To-Engine Mount Crossmember Nut55-77 (75-104)
Engine Mount-To-Transaxle Case Nut27-38 (37-52)
Exhaust Manifold Bolt/Nut14-19 (19-26)
Flywheel/Drive Plate Bolt45-50 (61-68)
Friction Gear Nut51-58 (69-79)
Front Exhaust Pipe-To-Exhaust Manifold Nut28-38 (38-52)
Front Suspension Crossmember Bolt69-93 (94-126)
Fuel Rail Bolt14-19 (19-26)
Intake Manifold Bolt/Nut14-19 (19-26)
Knock Sensor14-25 (19-34)
Lower Control Arm Ball Joint To-Steering Knuckle Through-Bolt32-43 (43-58)
Lower Cylinder Block Bolt (2)
Bolt "A"
Step 117-19 (23-26)
Step 2Additional 75-85 Degrees
Bolt "B"
Step 117-19 (23-26)
Step 2Additional 65-75 Degrees
Bolt "C"
Step 113-15 (18-20)
Step 2Additional 55-65 Degrees
Bolt "D"14-18 (19-25)
No. 1 Idler Pulley Bolt28-38 (38-52)
No. 2 Idler Pulley Bolt28-38 (38-52)
Oil Cooler-To-Oil Filter Adapter Nut19-25 (26-34)
Oil Pan Bolt
Long Bolt14-19 (19-26)
Short Bolt(3)
Oil Pump Bolt14-19 (19-26)
Power Steering Pump Bracket Bolt(4)
Power Steering Pump Pulley Nut49-69 (66-93)
Relief Valve Plug42-51 (57-69)
Right (Timing Belt Side) Engine Mount
Nut55-75 (74-102)
Through-Bolt63-86 (86-116)
Shift Rod-To-Transaxle Bolt (M/T)12-17 (16-23)
Spark Plug11-17 (15-23)
Stabilizer Bar Link Nut32-45 (43-61)
Stabilizer Rod-To-Transaxle Bolt (M/T)23-34 (31-46)
Starter-To-Transaxle Case Bolt27-38 (37-52)
Tensioner Pulley Bolt28-32 (38-44)
Throttle Body Bolt/Nut14-19 (19-26)
Tie Rod End Nut31-42 (42-57)
Timing Belt Tensioner Bolt14-19 (19-26)
Transaxle Mount & Bracket Bolt/Nut50-68 (67-92)
Water Pump Bolt14-19 (19-26)
Wheel Lug Nut65-87 (88-118)
INCH Lbs. (N.m)
Air Pipe-To-Intake Manifold Bolt69-95 (8-11)
Camshaft Bearing Cap Bolt (5)100-126 (11-14)
Crank Angle Sensor Bracket Bolt69-95 (8-11)
Cylinder Block Valley Cover Bolt69-95 (8-11)
Fuel Injector Retainer Bolt22-31 (2-4)
Oil Jet26-43 (3-5)
Oil Pump Body Cover Bolt52-78 (6-9)
Pick-Up Tube Bolt69-95 (8-11)
Pressure Regulator Bolt61-87 (7-10)
Seal Plate Bolt69-95 (8-11)
Timing Belt Cover Bolt69-95 (8-11)
Valve Cover Bolt (6)43-78 (5-9)
Water Pump Pulley Bolt69-95 (8-11)
(1) Tighten bolts to specs in sequence. (Схема №5) (2) Identify bolts and tighten bolts to specs in proper sequence. (Схема №32) (3) Tighten bolts to 69-95 INCH lbs. (8-11 N.m). (4) Tighten 2 upper bolts on front of bracket to 23-34 ft. lbs. (31-46 N.m). Tighten lower bolt on front of bracket to 14-19 ft. lbs. (19-26 N.m). Tighten bolt on rear of bracket-to-cylinder block to 24-33 ft. lbs. (32-45 N.m). (5) Tighten bolts to specification in sequence. (Схема №18) (6) Tighten bolts to specification in sequence. (Схема №8)
(1)Tighten bolts to specs in sequence. (Схема №5)
(2)Identify bolts and tighten bolts to specs in proper sequence. (Схема №32)
(3)Tighten bolts to 69-95 INCH lbs. (8-11 N.m).
(4)Tighten 2 upper bolts on front of bracket to 23-34 ft. lbs. (31-46 N.m). Tighten lower bolt on front of bracket to 14-19 ft. lbs. (19-26 N.m). Tighten bolt on rear of bracket-to-cylinder block to 24-33 ft. lbs. (32-45 N.m).
(5)Tighten bolts to specification in sequence. (Схема №18)
(6)Tighten bolts to specification in sequence. (Схема №8)

TORQUE SPECIFICATIONS