Question about 2006 Chevrolet Cobalt

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I need bolt torque specs for a 2006 chevy cobalt Rod bolt and pan bolt torque specs also oil clearance for rod journals

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If you just go to a mecanic and ask what are the specks on that they should know but i think if you just tighten them down with an impact wrench till it is really tight after ou start the car it will run like **** then it will work its self out

Posted on Nov 17, 2009

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Bearing oil clearance and new size bearing


No the oil clearance is correct for BOTH bearings @ .022 -.046 mm to try to get a true clearance measurement use a micrometer and measure in 4 places 90 degrees part this will check for out of round journal and compare to a factory journal size. there may be a .001 thousand or .002 thousand undersize bearing insert that will bring oil clearance in to specs. but most connecting rods get black from a spun bearing and they need to stay round so a inside micrometer is used to check that 10 times out 10 the connecting rod is replaced.

Apr 17, 2014 | 1994 Acura Legend

1 Answer

What are the rod and main bearing torque specs for a 96 chevy S-10 2.2?


The torque spec for the main bearing caps on a 2.2 are 105 nm or 77 ft lbs all. But you know if your doing the crank there is a lot more to it then the torque . The main bearing clearance is 0.0006 to 0.0019 and the rod clearance is even tighter 0.00098 to 0.0031.
the connecting rod 45Nm or 34 lbs ft i hope be help you
Well good luck

Mar 14, 2013 | Chevrolet S 10 Cars & Trucks

1 Answer

Toque specs on a 1971 in line 6 mercury comet's rod bearings and the clearance between the bearing and crankshaft


TORQUE SPEC FOR ROD BEARING BOLTS 19 - 24 FT LBS TORQUE SPEC FOR MAIN BEARING BOLTS 60 - 70 FT LBS, CRANKSHAFT PULLEY BOLT 85 - 100 FT LBS. MAIN BEARING OIL CLEARANCE .0005 - .0022 CONNECTING ROD OIL CLEARANCE .0008 - .0015 / SHAFT END PLAY .004 - .008 / AND ROD SIDE CLEARANCE IS .004 - .011 HOPE THIS HELP THIS INFORMATION I GAVE YOU IS INLINE 6 -200 AND INLINE 6 - 250 ENGINES

Nov 11, 2011 | Cars & Trucks

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I need torque specs for 1996 chevy s-10 2.2 liter main bearing cap bolts


The torque speic for the main bearing caps on a 2.2 are 105 nm or 77 ftlbs all. But you know if your doing the crank there is a lot more to it then the torque . The main bearing clearance is 0.0006 to 0.0019 and the rod clearance is even tighter 0.00098 to 0.0031. Well good luck

Feb 24, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

What is the clearance for rod bearings on the crank of a 98 ford f 150 4.6


General Specifications Item Specification
Displacement L (CID) 4.6 (281)
Number of Cylinders 8
Bore and Stroke mm 90.2 x 90.0
Firing Order 1-3-7-2-6-5-4-8
Oil Pressure (HOT @ 1500 rpm) kPa 138-310
Drive Belt Tension a
Cylinder Head and Valve Train
Combustion Chamber Volume cm 52?±.5
Valve Seats Width?€"Intake mm 1.9-2.1
Valve Seats Width?€"Exhaust mm 1.9-2.1
Valve Seats Angle 44.51-45.01 degrees
Valve Seats Runout (T.I.R.) Max mm 0.025
Valve Arrangement (Front-to-Rear) (Left Hand) E-I-E-I-E-I-E-I
(Right Hand)
I-E-I-E-I-E-I-E
Valve Stem to Guide Clearance?€"Intake mm (Inch) 0.020-0.069
(0.00078-0.00272)
Valve Stem to Guide Clearance?€"Exhaust mm (Inch) 0.045-0.095 (0.0018-0.0037)
Valve Head Diameter?€"Intake mm (Inch) 44.5- (1.75)
Valve Head Diameter?€"Exhaust mm (Inch) 34.0 (1.34)
Valve Head Diameter?€"Gauge Diameters mm (Inch) 42.5- and 32.0
(1.67 and 1.26)
Valve Face Runout Limit mm (Inch) 0.05 (0.002)
Valve Face Angle 45.25-45.75 degrees
Valve Stem Diameter (STD)
?€"Intake mm (Inch) 6.995-6.975 (0.275-0.2746)
Valve Stem Diameter (Std)
?€"Exhaust mm (Inch) 6.970-6.949 (0.274-0.2736)
Valve Springs?€"
Compression Pressure N @
Spec. Length?€"Intake 587.14 N @ 28.02 mm
Valve Springs?€"
Compression Pressure N @
Spec. Length?€"Exhaust 587.14 N @
28.02 mm
Valve Springs?€"Free
Length ( Approximate)?€"
Intake mm (Inch) 49.55 (1.951)
Valve Springs?€"Free
Length (Approximate)?€"
Exhaust mm (Inch) 49.55 (1.951)
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Intake 244.64 N @ 40.0 mm
Valve Spring?€"Installed
Pressure N @ Spec. Length
?€"Exhaust 244.64 N @ 40.0 mm
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Service Limit 10 % Pressure Less @ 28.02 mm
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Out of Square Limit 2 degrees
Valve Guide Inner
Diameter mm (Inch) 7.015-7.044 (0.2761-0.2773)
Rocker Arm?€"Ratio 1.75:1
Valve Tappet?€"Diameter
(STD) mm (Inch) 16.000-15.988 (0.66-0.629)
Valve Tappet?€"Clearance
to Bore mm (Inch) 0.018-0.069
(0.00071-0.00272)
Valve Tappet?€"Service
Limit mm (Inch) 0.016 (0.00063)
Valve Tappet?€"Hydraulic
Leakdown Rate b 5-25 seconds
Valve Tappet?€"Collapsed
Valve Tappet Gap?€"
Desired mm (Inch) 0.085-0.45 (0.0033-0.0177)
Camshaft
Lobe Lift?€"Intake
mm (Inch) 6.58939 (0.2594)
Lobe Lift?€"Exhaust
mm (Inch) 6.58939 (0.2594)
Lobe Lift?€"Allowable
Lobe Lift Loss mm (Inch) 0 (0)
Theoretical Valve Lift @
Zero Lash?€"Intake
mm (Inch) 12.0 (0.472)
Theoretical Valve Lift @
Zero Lash?€"Exhaust
mm (Inch) 12.0 (0.472)
End Play mm (Inch) 0.025-0.165
(0.00098-0.0065)
Journal to Bearing
Clearance mm (Inch) 0.025-0.076
(0.00098-0.003
Journal to Bearing
Clearance?€"Service Limit
mm (Inch) 0.021 (0.0048)
Journal Diameter (All)
mm (Inch) 26.962-26.936
(1.061-1.060)
Journal Diameter (All)?€"
Bearing Inside Diameter
(All) mm (Inch) 27.012-26.987
(1.063-1.0625)
Camshaft Runout
mm (Inch) 0.05 (0.002)
Cylinder Bore
Diameter?€"Surface Finish
(RMS) 0.2-0.6 Microns
Diameter?€"Out-of-Round
Limit mm (Inch) 0.015 (0.0006)
Diameter?€"Out-of-Round
Service Limit mm (Inch) 0.020 (0.00079)
Diameter?€"Taper Service
Limit mm (Inch) 0.006 (0.00023)
Piston
Piston?€"Diameter?€"
Coded Red 1 mm (Inch) 90.177-90.197
(3.550-3.551)
Piston?€"Diameter?€"
Coded Blue 2 mm (Inch) 90.190-90.210
(3.5507-3.5515)
Piston?€"Diameter?€"
Coded Yellow 3 mm (Inch) 90.203-90.223
(3.513-3.5521)
Piston-to-Bore-Clearance
mm (Inch) -0.015 + 0.031 (0.0005-0.0012)
Pin Bore Diameter
mm (Inch) 22.0015-22.004
(0.866-0.8663)
Ring Groove Width?€"
Compression (Top)
mm (Inch) 1.520-1.550 (0.06-0.610)
Ring Groove Width?€"
Compression (Bottom)
mm (Inch) 1.520-1.530 (0.060-0.0602)
Ring Groove Width?€"Oil
Ring mm (Inch) 6.996-7.224 (0.275-0.2844)
Piston Pin?€"Length
mm (Inch) 61.93-62.05 (2.44-2.443)
Diameter mm (Inch) 21.994-21.999
(0.866-0.8661)
Pin to Piston Clearance
mm (Inch) 0.005-0.010
(0.0002-0.0004)
Pin to Rod Clearance
mm (Inch) 0.015-0.040
(0.0006-0.00157)
Piston Rings?€"Ring Gap
?€"Compression (Top)
mm (Inch) 1.0 MAX (0.0394)
Piston Rings?€"Ring Gap
?€"Compression (Top)
mm (Inch) 1.0 MAX (0.0394)
Oil Ring?€"Side Clearance
mm (Inch) 1.25 MAX (0.05)
Oil Ring?€"Compression
(Top) mm (Inch) 0.040-0.090
(0.0016-0.0031)
Oil Ring?€"Compression
(Top) mm (Inch) 0.030-0.080
(0.0012-0.00031)
Oil Ring Snug Fit
Oil Ring?€"Service Limit
mm (Inch) 0.015 MAX (0.0006)
Ring Gap?€"Compression
(Top) mm (Inch) 0.23-0.49
(0.01-0.02)
Ring Gap?€"Compression
(Bottom) mm (Inch) 0.23-0.49
(0.01-0.02)
Ring Gap?€"Oil Ring (Steel
Rail) mm (Inch) 0.05-0.66 (0.006-0.026)
Lubrication System
Oil Capacity?€"Automatic
Transmission (Quarts U.S.) 6.675?±0.125
Oil Capacity?€"Manual
Transmission (Quarts U.S.) 6.425?±0.125
Cylinder Block
Main Bearing Bore
Diameter mm (Inch) 72.401-72.422 (2.85-2.851)
Crankshaft and Flywheel
Main Bearing Journal
Diameter mm (Inch) 67.483-67-503 (2.65-2.657)
Connecting Rod Journal?€"
Diameter mm (Inch) 52.988-53.003
(2.0861-2.0867)
Crankshaft Free End Play
mm (Inch) 0.130-0.301 (0.0051-0.012)
Crankshaft Runout to Rear
Face of Block mm (Inch) 0.050 MAX (0.002)
Connecting Rod Bearings
Clearance to Crankshaft?€"
Desired mm (Inch) 0.027-0.069 (0.001-0.0027)
Clearance to Crankshaft?€"
Allowable mm (Inch) 0.027-0/069 (0.001-0.0027)
Bearing Wall Thickness
(STD) mm (Inch) 2.44-2.452 (0.096-0.0965)
Main Bearings
Clearance to Crankshaft?€"
Desired mm (Inch) 0027-0.065
(0.0011-0.0026)
Clearance to Crankshaft?€"
Allowable mm (Inch) 0.027-0.065
(0.0011-0.0026)
Bearing Wall Thickness
(STD) mm (Inch) 1.920-1.928 (0.075-0.076)
Connecting Rod, Piston and Rings
Connecting Rod?€"Piston
Pin Bore Diameter
mm (Inch) 21.959-21.979
(0.864-0.865)
Connecting Rod?€"
Crankshaft Bearing Bore
Diameter mm (Inch) 56.756-56.876 (2.234-2.24)
Connecting Rod?€"Length
(Center-to-Center)
mm (Inch) 150.7 (5.93)
Alignment (Bore-to-Bore
Max. Diff.) c ?€"Twist
mm (Inch) 0.050 per 25 (0.0015-0.984)
Alignment (Bore-to-Bore
Max. Diff.)?€"Bend
mm (Inch) 0.038 per 25 (0.0015-0.984)
Side Clearance (Assembled
to Crank)?€"Standard
mm (Inch) 0.015-0.45 (0.0006-0.0177)
Side Clearance (Assembled
to Crank)?€"Service Limit
mm (Inch) 0.05 MAX (0.02)
Crankshaft Main Bearing
Journal Taper mm (Inch) 0.020 (0.0007)
Crankshaft Main Bearing
Journal Runout mm (Inch) 0.05 (0.002)
Crankshaft Connecting Rod
Journal Taper mm (Inch) 0.015 (0.0006)

Feb 15, 2011 | 1998 Ford F150 Regular Cab

1 Answer

Replacing crankshaft pulley/balancer assy procedure. 1994 Merc Topaz 2.3 4cyl.


Crankshaft and Main Bearings REMOVAL & INSTALLATION NOTE: When draining coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old. CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your and and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used. 2.3L Engine
  1. Disconnect the negative battery cable.
  2. Drain the cooling system and engine crankcase.
  3. Remove the engine from the vehicle.
  4. Remove the crankshaft front pulley, front cover, timing chain and sprockets, cylinder head, oil pan, oil pump and intermediate driveshaft.
  5. Remove the rear oil seal cover bolts and remove the cover.
  6. Remove the piston assemblies. NOTE: Mark the connecting rods and bearing caps so they can be installed in the proper cylinders.
  7. Remove the main bearing caps and bearing.
  8. Carefully lift the crankshaft out of the crankcase, so No. 3 thrust bearing surfaces are not damaged.
  9. Remove the main bearing inserts from the engine block and bearing caps. NOTE: For cleaning purposes, the oil gallery and coolant drain plugs can be removed. To install:
  10. Wash the cylinder block thoroughly to remove all foreign material and dry before assembling other components. Check to ensure all oil holes are fully open and clean. Check to ensure the bearing inserts and bearing bores are clean. Clean the mating surfaces of the crankcase and each main bearing cap.
  11. Install the main bearings in the cylinder block. Note that the center front bearing is a thrust bearing and the front upper bearing has a small "V'' notch on the parting line face.
  12. Lubricate the bearings with clean engine oil.
  13. Carefully lower the crankshaft into place. Be careful not to damage the bearing surfaces.
  14. Check the clearance of each main bearing as outlined in this section.
  15. After the bearing has been fitted, apply a light coat of engine oil to the journal and bearings. Install the bearing cap in their original locations . (refer to numbers on caps). The caps must be installed with the arrows pointing to ward the front of the engine. Oil the bolts and tighten to specifications. Repeat the procedure for the remaining bearings. NOTE: Turn the crankshaft to check for turning torque. The turning torque should not exceed 4.5 ft. lbs. (6 Nm).
  16. Install the pistons and connecting rod caps. Check clearance of each bearing, as out lined in this section.
  17. After the connecting rod bearings have been fitted, apply a light coat of engine oil to the journal and bearings.
  18. Turn the crankshaft throw to the bottom of its stroke. Pull the piston all the way down until the rod bearing seats on the crankshaft journal. NOTE: Guide the rod to prevent crankshaft journal and oil cooling jet damage.
  19. Install the connecting rod cap. Align the marks on the rods with the marks on the cap, and tighten the nut.
  20. After the piston and connecting rod assemblies have been installed, check the side clearance between the connecting rods on each connecting rod crankshaft journal.
  21. Install the rear crankshaft seal and cover. Tighten the bolts to 5–7 ft. lbs. (7–10 Nm).
  22. Installation of the remaining components is in the reverse order of removal.

Jul 26, 2010 | 1994 Mercury Topaz

2 Answers

Need torque specs for 83 chevy 350 cylinder head bolts.


Hello there
Torque Specs
These specs may not be correct for your application.
Verify your engine specs with a service manual for your year and model.
always torque bolts in three equal increments
Bolts or Parts Lube or Sealer Torque to: 7/16 Main Caps (2 bolt) Engine Oil 70 ft-lbs. 7/16 Inner Main Caps (4 bolt) Engine Oil 70 ft-lbs. 7/16 Outer Main Caps (4 bolt) Engine Oil 65 ft-lbs. 3/8 Outer Main Caps (4 bolt) Engine Oil 40 ft-lbs. Warning!!! If you are using ARP bolts, you MUST use
their specs. Click Here! 3/8 Connecting Rod Bolt Engine Oil 45 ft-lbs. 11/32 Connecting Rod Bolt Engine Oil 45 ft-lbs. Cylinder Heads
Engine oil
(blind hole)
Sealer
(water jacket)
65 ft-lbs.
Rocker Studs (screw-in) Engine Oil 50 ft-lbs. Oil Pump Engine Oil 65 ft-lbs. Oil Pan Engine Oil 12 ft-lbs. Cam Sprocket (upper gear) Thread Locker 20 ft-lbs. Timing Cover Engine Oil 6 ft-lbs. Intake Manifold
(Cast Iron Heads)
Non- Hardening Sealer 30 ft-lbs. Valve Cover Engine Oil 3 ft-lbs. Exhaust Manifold Anti-Seize Lubricant 25 ft-lbs. Spark Plugs No Lube or Sealer 20 ft-lbs. Flexplate (Automatic)
Flywheel (Clutch)
Thread Locker 60 ft-lbs. Clutch Pressure Plate Thread Locker 35 ft-lbs. Centerbolt
(Harmonic Damper)
Engine Oil 60 ft-lbs. Bellhousing
(Transmission to Block)
Engine Oil 25 ft-lbs. Head Bolt Tightening Sequence
sbchvy_head_seq.gif

Apr 16, 2010 | 1983 Chevrolet Chevy

1 Answer

Torque specs


2002 2.0L Duratech.

Don't have 2004 2.3L

  • NOTE: Use new connecting rod bearing cap bolts.
    NOTE: Do not fully tighten the connecting rod bearing cap bolts at this stage.
    Install the bearing caps.
  • Rotate the crankshaft through 180 degrees and insert pistons 2 and 3.
  • Position the corresponding bearing shells, clean and free of oil, into the connecting rod and the connecting rod bearing cap.
  • Coat the inner side of the bearing shells with engine oil.
  1. NOTE: The crankshaft must rotate freely, if necessary check and adjust the bearing clearances.
    Tighten the main bearing and connecting rod bearing bolts.
    1. Tighten the main bearing bolts in two stages.
      • Stage 1: 25 Nm.
      • Stage 2: 60 degrees.
    1. Tighten the connecting rod bearing bolts in two stages.
      • Stage 1: 35 Nm.
      • Stage 2: 90 degrees.
96fc939.gif

Apr 28, 2009 | 2004 Ford Focus

1 Answer

Looking for the torque specs for 1998 chevy astro van?


1998 chevy astro 4.3 v6 torque specs include :
* foot pounds *
balance shaft (if equiped) gear bolt = step 1 = 15 ft.lbs. step2 = additional 35 degrees.
camshaft sprocket bolt = 18 ft. lbs.
connecting rod cap = step 1 = 20 ft. lbs. step 2 = additional 70 degrees.
crankshaft damper bolt = 74 ft. lbs.
crankshaft oil deflectorbolt/nut = 27 ft.lbs.
cylinder head bolts = step 1 = 15 ft. lbs. step 2 = additional 73 degrees. (tighten in sequence)
2811243.jpg


exhaust manifold bolts = step 1 = 11 ft. lbs. step 2 = 22 ft. lbs.
flywheel bolt = 74 ft. lbs.
main bearing cap bolts = step 1 = 15 ft. lbs. step 2 = additional 73 degrees.
oil filter adapter bolt = 15 ft. lbs.
oil pan bolt/nut = 18 ft. lbs.
oil pump bolt = 66 ft. lbs.
rocker arm with press in studs = 18 ft. lbs.
rocker arm with screw in studs = 19 ft. lbs.
valve lifter retainer bolt = 12 ft. lbs.
water pump bolt = 33 ft. lbs.
* inch pounds *
balance shaft retaining plate bolt = 106 in. lbs.
camshaft retainer plate bolt = 106 in. lbs.
front cover bolt = 106 in. lbs.
intake manifold upper = step 1 = 44 in. lbs. step 2 = 88 in. lbs.
intake manifold lower = step 1 = 27 in. lbs. step 2 = 106 in. lbs. step 3 = 133 in. lbs. ** (tighten bolts in sequence)

cbb8861.jpg

thanks for your vote !

Dec 28, 2008 | 1998 Chevrolet Astro

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