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Engine Mechanical - 2.5L V6: Specifications Chevrolet Tracker II

Mechanical

Crankcase Capacity

Oil crankcase capacity with oil filter change is 5.8 qts. (5.5L) with filter.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
A/C Compressor Mounting Bolt17 (23)
A/C Compressor Mounting Bracket Bolt40 (55)
Camshaft Sprocket Bolt58 (79)
Connecting Rod Bearing Cap Nuts33 (45)
Crankshaft Pulley Bolt109 (148)
Cylinder Head Bolt (1)
Step 139 (53)
Step 261 (83)
Step 3Loosen All Bolts
Step 439 (53)
Step 561 (83)
Step 676 (103)
Drive Plate (A/T) Bolt51 (69)
Engine-To-Transmission Bolt62 (84)
Exhaust Manifold Bolt22 (30)
Exhaust Pipe Bolt37 (50)
Flywheel (M/T) Bolt51 (69)
Idler Sprocket No.1 Bolt33 (45)
Intake Manifold Bolt17 (23)
Lower Crankcase Bolts (2)
8-mm20 (27)
10-mm44 (60)
Oil Drain Plug26 (35)
Oil Pressure Switch10 (14)
Oil Pump-To-Block Bolt20 (27)
Timing Chain Tensioner No. 3
Bolt18 (24)
Nuts33 (45)
Torque Convertor Bolts47 (64)
Universal Joint Flange Bolts40 (54)
Upper Oil Pan Bolts (3)
"A"20 (27)
"B"(4)
Water Pump Bolts20 (27)
INCH Lbs. (N.m)
Camshaft Bearing Cap Bolts (5)106 (12)
Cylinder Head M6 Bolts97 (11)
Lower Oil Pan-To-Upper Oil Pan Bolts97 (11)
Oil Pump Body Bolts106 (12)
Oil Pump Chain Guide Bolts97 (11)
Oil Pump Strainer Bolts97 (11)
Throttle Body Bolts & Nuts106 (12)
Timing Chain Cover Bolts97 (11)
Timing Chain Guide Bolts
No. 1 & No. 280 (9)
No. 3 & No. 497 (11)
Timing Chain Tensioner Adjuster Bolt
No. 1 & No. 297 (11)
Valve Cover Bolts93 (10.5)
(1) Tighten bolts to specification in sequence. (Схема №3) (2) Tighten bolts to specification in sequence. (Схема №31) (3) (Схема №25) (4) Tighten bolts to 97 INCH lbs. (11 N.m). (5) Tighten bolts to specification in sequence. (Схема №16)and (Схема №19).
(1)Tighten bolts to specification in sequence. (Схема №3)
(2)Tighten bolts to specification in sequence. (Схема №31)
(3)(Схема №25)
(4)Tighten bolts to 97 INCH lbs. (11 N.m).
(5)Tighten bolts to specification in sequence. (Схема №16)and (Схема №19).

TORQUE SPECIFICATIONS

GENERAL SPECIFICATIONS

ApplicationSpecification
Displacement153 Cu. In. (2.5L)
Bore3.3071" (84 mm)
Stroke2.95" (75.0 mm)
Compression Ratio9.5:1
Fuel SystemSFI

GENERAL SPECIFICATIONS

CRANKSHAFT, MAIN BEARINGS & CONNECTING ROD BEARINGS SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft
End Play
Standard.0044-.0122 (.112-.310)
Limit.0149 (.378)
Runout (Center Journal).0023 (.058)
Thrust Bearing
Standard.0984 (2.500)
Oversize.1009 (2.563)
Main Bearings
Journal Diameter
Size Mark "1"2.5588-2.5590 (64.994-65.999)
Size Mark "2"2.5586-2.5588 (64.988-64.994)
Size Mark "3"2.5583-2.5586 (64.981-64.988)
Journal Out-Of-Round.0004 (.010)
Journal Taper.0004 (.010)
Oil Clearance
Standard.0008-.0016 (.020-.040)
Limit.0023 (.058)
Bearing Cap Bore Diameter
"A"2.7559-2.7561 (69.999-70.005)
"B"2.7561-2.7563 (70.005-70.010)
"C"2.7563-2.7566 (70.010-70.018)
Connecting Rod Bearings
Journal Diameter
Standard1.9678-1.9685 (49.982-49.999)
Undersize1.9580-1.9586 (49.733-49.748)
Journal Out-Of-Round.0004 (.010)
Journal Taper.0004 (.010)
Oil Clearance
Standard.0010-.0022 (.025-.056)
Limit.0031 (.079)

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

CONNECTING RODS SPECIFICATIONS

ApplicationIn. (mm)
Bore Diameter
Pin Bore.8269-.8272 (21.003-21.011)
Maximum Bend.0020 (.050)
Maximum Twist.0039 (.099)
Side Play
Standard.0099-.0157 (.251-.399)
Limit.0177 (.450)

CONNECTING RODS

PISTONS, PISTON PINS & PISTON RINGS SPECIFICATIONS

ApplicationIn. (mm)
Pistons
Clearance.0008-.0015 (.020-.038)
Diameter3.3063-3.3067 (83.980-83.990)
Pins
Diameter.8266-.8268 (20.996-21.000)
Piston FitSlip
Rod FitSlip
Rings
No. 1
End Gap
Standard.0079-.0137 (.200-.348)
Limit.0276 (.701)
Side Clearance.0012-.0027 (.030-.069)
No. 2
End Gap
Standard.0138-.0196 (.351-.498)
Limit.0276 (.701)
Side Clearance.0008-.0023 (.020-.058)
No. 3 (Oil)
End Gap
Standard.0079-.0275 (.201-.699)
Limit.0709 (1.801)

PISTONS, PINS & RINGS

CYLINDER BLOCK SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore
Diameter (1)
Size Mark "1"3.3075-3.3078 (84.010-84.018)
Size Mark "2"3.3071-3.3074 (84.000-84.008)
Maximum Limit3.3090 (84.049)
Maximum Taper.004 (.10)
Maximum Out-Of-Round.004 (.10)
Maximum Deck Warpage.0024 (.061)
(1) Cylinder bore diameter determined by number stamped on block head surface.
(1)Cylinder bore diameter determined by number stamped on block head surface.

CYLINDER BLOCK

ENGINE VALVES & VALVE SPRINGS SPECIFICATIONS

ApplicationIn. (mm)
Intake Valves
Face Angle45 Degrees
Head Thickness
Standard.039 (.99)
Limit.023 (.58)
Face Width.0433-.0512 (1.099-1.300)
Stem Diameter.2348-.2354 (5.964-5.979)
Exhaust Valves
Face Angle45 Degrees
Head Thickness
Standard.047 (1.19)
Limit.027 (.69)
Face Width.0433-.0512 (1.099-1.300)
Stem Diameter.2339-.2344 (5.941-5.954)
Valve Springs
Free Length
Inner Standard1.4204 (36.078)
Inner Service Limit1.3780 (35.001)
Outer Standard1.5921 (40.439)
Outer Service Limit1.5441 (39.220)
Out-Of-Square
Inner(1)
Outer(1)
Side Clearance
Inner.063 (1.63)
Outer.070 (1.77)
Lbs. @ In. (kg @ mm)
Pressure
Inner Standard15.2-17.4 @ 1.08 (6.9-7.9 @ 27.43)
Inner Service Limit13 @ 1.08 (5.9 @ 27.43)
Outer Standard33.9-39.2 @ 1.25 (15.4-17.8 @ 31.75)
Outer Service Limit30 @ 1.25 (13.3 @ 31.75)
(1) Information is not availible from manufacturer.
(1)Information is not availible from manufacturer.

VALVES & VALVE SPRINGS

CYLINDER HEAD SPECIFICATIONS

ApplicationIn. (mm)
Maximum Warpage
Head-To-Block.002 (.05)
Manifold-To-Block.004 (.10)
Valve Seats
Seat Angle45 Degrees
Seat Width.0433-.0512 (1.099-1.300)
Valve Guides
Valve Guide I.D..2362-.2367 (5.999-6.012)
Valve Guide Installed Height.53 (13.5)
Valve Stem-To-Guide Oil Clearance
Intake Valve
Standard.0008-.0018 (.020-.046)
Limit.0027 (.069)
Exhaust Valve
Standard.0018-.0028 (.046-.071)
Limit.0035 (.089)

CYLINDER HEAD

CAMSHAFT SPECIFICATIONS

ApplicationIn. (mm)
Bore Diameter1.0236-1.0249 (25.999-26.032)
Journal Diameter1.0220-1.0228 (25.959-25.979)
Journal Runout.0039 (.099)
Lobe Height
Intake
Standard1.5530-1.5593 (39.446-39.606)
Limit1.5512 (39.400)
Exhaust
Standard1.5523-1.5586 (39.428-39.588)
Limit1.5512 (39.400)
Oil Clearance
Standard.0008-.0029 (.020-.074)
Limit.0047 (.119)

CAMSHAFT

VALVE LASH ADJUSTER SPECIFICATIONS

ApplicationIn. (mm)
Bore Diameter1.2205-1.2214 (31.000-31.023)
Lifter Diameter1.2188-1.2194 (30.958-30.972)
Oil Clearance
Standard.0010-.0025 (.025-.063)
Limit.0059 (.150)

VALVE LASH ADJUSTER

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