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Posted on Feb 22, 2012
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Can 0.5 over size main bearing effect the torque? Normal Nm is 50 but bolt breaks at 45Nm and they are new bolts.

I have tried to torque the main bearings to 50Nm but the bolt broke at +- 45Nm, could being 0.5 over size be the cause.

  • Jeremy W.
    Jeremy W. Feb 22, 2012

    Year, make, model, and engine size?

  • Anonymous Feb 22, 2012

    Your torque wrench calibration could be out. Make sure the bearings are the correct oversize for the journal (your engineering shop should have given you specs). Make sure you are using the correct unit of measurement ie Nm, ft-lbs etc.
    If you are using 50 thou oversize bearings on a standard crank you MAY get a bolt that breaks. Not likely. Rather check the above points.
    ps Over the counter bolts at your local Bolt-n-Nut will suffice if not the correct spec

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1 Answer

Marvin

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  • Cars & Trucks Master 85,242 Answers
  • Posted on Feb 22, 2012
Marvin
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No the torque remains the same.

5 Related Answers

Anonymous

  • 6982 Answers
  • Posted on Apr 09, 2009

SOURCE: Front caliper securing bolts torque

I know that it's a jag, and I know you are trying to be perfect, but in over thirty years, I've never seen a tech put a torque wrench on a caliper bolt. If you really want to I'd use about 35-40 foot pounds. (I go by bolt diameter) You don't have to slam them down but you don't want them to back out either. A bit over 35 is reasonable and should not damage anything and will keep them secure!
I have no idea what nm conversion is..

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Roger Foster

  • 701 Answers
  • Posted on Apr 15, 2009

SOURCE: torque specs for toyota tercel

Hello vienotkelly: The correct Main bolt torque is 42 foot pounds. The connecting rods torque to 29 foot pounds. The torque sequence for the head bolts and the correct way to tighten the bolts are attached to this reply. Thak You for using6bd0ae1.jpg FixYa. Roger

GIVHRR

  • 72 Answers
  • Posted on May 09, 2009

SOURCE: Front Hub Bearing Torque specs to complete replacement

THE LUG NUT TORQUE SPEC - 140FT/LBS\
CALIPER MOUNT - 80FT/LBS
CALIPER BRACKET 129FT/LBS
AXLE NUT 177FT/LBS

Anonymous

  • 92 Answers
  • Posted on Sep 20, 2009

SOURCE: torque specs for 1998 tercel 1.5L

Main Bearing Cap Torque-42 Ft. Lbs.
Head Bolts Step 1-33 Ft. Lbs. Step 2- Additional 90 Degrees
Rod Bearing Nuts-29 Ft. Lbs.

Hope this helps

steve_e_uk

steve morris

  • 1675 Answers
  • Posted on Apr 07, 2010

SOURCE: whats the torque setting for big end bearing bolt

hi big end bearings are two stage, 25nm leave ten mins, then 49nm cylinder head bolts three stages 20nm leave ten mins, 40nm leave ten mins then 60nm check after 5,000miles hope this helps

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Looking for Hyundai hd65 cylinder head, big ends and mains torque settings

  1. Tighten the cylinder head bolts in the sequence shown. Using the 4 step torque turn method, tighten according to the following values:
    • Step 1: All to 34 Nm (25 ft. lbs.)
    • Step 2: All to 68 Nm (50 ft. lbs.)
    • Step 3: All to 68 Nm (50 ft. lbs.)
CAUTION: Do not use a torque wrench for the following step.
Step 4: Turn an additional 1/4 turn




  • Step 5: Install and tighten bolts (1-10) in sequence shown, to 41 Nm (30 ft. lbs.) .
  1. Tighten bolts (1-10) again to 41 Nm (30 ft. lbs.) PLUS 1/4 turn in sequence shown.
  2. Install main bearing bedplate to engine block bolts (11-20), and torque each bolt to 28 Nm (20 ft. lbs.) in sequence shown.

Connecting Rod Cap Bolts 54 Nm (40 ft. lbs.) + 1/4 turn
1997 Jetta: Torque settings..vw..the head, fly wheel, big ends.


1997 Jetta3 1800 feul injection


Vibration Damper/belt Pulley
Tighten 20 Nm (14.8 ft lb) Crankshaft Toothed Belt Sprocket Tighten 90 Nm (66 ft lb) + 90° Camshaft Sprocket Tighten 80 Nm (60 ft lb) Main Bearing Cap
Tighten 65 Nm (48 ft lb) FLYWHEEL TORQUE
Torque 60 Nm. (44 ft. lbs.) + 1/4 turn (90°) [1] [1] Always replace bolts.
CYLINDER HEAD TIGHTENING TORQUE [1] :
1st sequence: 40 Nm (30 ft lb)
2nd sequence: 60 Nm (43 ft lb)
Final sequence: plus 1/2 turn (180°)
Here are some additional specifications, thanks
ntake Manifold
Mounting Bolts 25 Nm (18 ft. lbs.) Bearing Cap Nut 20 Nm (15 ft. lbs.) Rod Bearing Cap
Assembly
Tighten 30 Nm (22 ft lb) + 90° To measure radial clearance
Tighten 30 Nm (22 ft lb) but NOT additional 90° TIGHTENING SPECIFICATIONS
Oil Pump Bolt 20 Nm (14 ft. lbs.) Oil Tube To Block 10 Nm (7 ft. lbs.) Exhaust Manifold to Cyl. Head 25 Nm (18 ft lb) Exhaust Manifold to Front Exhaust Pipe 40 Nm (30 ft lb) Water Pump
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Cover Bolts 10 Nm (7 ft. lbs.) Mounting Bolt and Studs 20 Nm (15 ft. lbs.) + 1/4 turn (90°) Pulley Bolts 25 Nm (18 ft. lbs.)

TIGHTENING SPECIFICATIONS
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Tighten In Two Stages:
First Stage 30 Nm (22 ft. lbs.) Second Stage turn an additional 90°(1/4 turn)
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1answer

I need the torque settings for a Ford fiesta 1.4 2010 for the main bearings the head bolts and big ends

Here are the torque settings for a Ford Fiesta 1.4 2010 for the main bearings, head bolts, and big ends:
Main bearings
  • Main bearing caps: 1st stage - 7 Nm, 2nd stage - 16 Nm
  • Main bearing bolts: 45 Nm + 90°
Head bolts
  • Cylinders 1-3: 2nd stage - 30 Nm + 90°, 3rd stage - 80 Nm + 180°
  • Cylinder 4: 2nd stage - 25 Nm + 90°, 3rd stage - 60 Nm + 180°
Big ends
  • Connecting rod cap nuts: 1st stage - 22 Nm, 2nd stage - 40 Nm + 90°
Please note that these are just the general torque settings. The exact torque settings may vary depending on the specific engine and vehicle. It is always best to consult your vehicle's service manual for the correct torque settings.
Here are some additional tips for tightening the torque settings:
  • Use a torque wrench to ensure that the bolts are tightened to the correct torque.
  • Tighten the bolts in a star pattern, working your way from the center out.
  • Do not overtighten the bolts, as this can damage the engine.
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Torque settings

Torque settings Working on your car means you have to torque parts up when you fit them. Using correct torque levels is very important. Bolts will be tensioned when torquing up. Always use a torque wrench when installing parts on your car!
Too much tension means the bolt will be stressed too much and can ultimately break.
Not enough tension means the bolt can either run loose or it can move around. This will damage the bolt and it's brackets. This can ultimately also lead to catastrophic failures.
Only use 8.8 grade bolts in suspension applications. (wishbones, dampers etc.) 10.9 grade or even worse 12.9 grade bolts are hardened.

The hardening process will improve the maximum possible load on the bolt, but it will also make the bolt relatively brittle.

Within suspension parts, you would rather see bolts bend than sheer. 8.8 grade bolts have the tendacy to bend, any hardended bolts have the tendacy to sheer.
Below is a guideline to the torque levels used on Metric bolts.
Bolt grades are printed on the head of the bolt.
Bolt Size 8.8 10.9 12.9 A2-70 (Stainless) 6mm (M6) 9Nm 13Nm 14Nm 7Nm 8mm (M8) 23Nm 33Nm 40Nm 17Nm 10mm (M10) 45Nm 65Nm 70Nm 33Nm 12mm (M12) 80Nm 115Nm 125Nm 57Nm 14mm (M14) 125Nm 180Nm 195Nm 16mm (M16) 195Nm 280Nm 290Nm Note than when fitting bolts into Ally threads like rivnuts, manifolds and S1 uprights then the torque may need to be reduced.

Special note for Mr. Wiki - This is the thread size, not the head size.
Engine mount torque settings (K-Series) Nm RH engine mounting bracket to engine RH engine mounting bracket to rubber mounting RH engine rubber mounting to chassis RH engine steady arm bolts LH engine mounting bracket to rubber mounting LH engine mounting bracket to engine Lower steady arm bracket to sump Lower steady arm bolts Use Permabond A130(A912E7033V) on the sump end bolt on the lower steady arm
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,**Check batch number of ball joint is 43725 or later
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Torque settings for Chery Tiggo 2.0

Chery Tiggo 2.0 liter engine.
cylinder head torque sequence: 7 6 2 4 9 .......................................... 10 3 1 5 8
Is's done in 3 stages 1st stage 45 Nm......
2nd stage 90 degree turn, or a 1/4 turn......
3rd stage 90 degree turn, or a 1/4 turn.......

Camshaft bolts inlet and exhaust share the same torque settings 120 Nm

Cylinder head bolts MUST be replaced.

Main bearing cap Bolts: 1st 45Nm.......
2nd 180 degree turn, or 1/2 turn.......
Connecting Rod Bolts 1st 25Nm......
2nd 90 degree turn or 1/4 turn

Lower cylinder Block bolts 23 Nm........
Camshaft bearing cap bolts: 11Nm
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What's the torque settings for the Opel corsa1.4i crank mains and big ends

Please note: You must use new bolts as these are torque to yield bolts, in other words they are a type of linear spring.
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stage 1 ... 25 Nm (18 lb ft)
stage 2 ... angle tighten + 30 degrees
Main bearing cap bolts (use new bolts)
stage 1 ... 50 Nm (37 lb ft)
stage 2 ... angle tighten + 45 degrees
stage 3 ... angle tighten + 15 degrees

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Hi can you help me with torque settings for main and big end bearings for 1.4 opel corsa

Connecting rod cap bolts (you must use new bolts)
stage 1 ... 25 Nm (18 lb ft)
stage 2 ... angle tighten + 30 degrees

Main bearing cap bolts ( you must use new bolts)
stage 1 ... 50 Nm (37 lb ft)
stage 2 ... angle tighten + 45 degrees
stage 3 ... angle tighten + 15 degrees
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What the torque settling on a 1.8spi vauxhall cavalier 1994

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Clutch pressure plate : 15 Nm Crankshaft pulley/damper centre bolt : Use new bolts. Tighten centre bolt to 130 Nm + 40°-50°
Camshaft sprocket/gear : 45 Nm Camshaft/rocker cover : 8 Nm Inlet manifold to cylinder head : 22 Nm Exhaust manifold to cylinder head : 22 Nm Spark plugs : 25 Nm Lambda sensor (Oxygen) : 30 Nm Chassis tightening torques Front hub :
  • Tighten nut in three stages:
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    2. Slacken off
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Steering track rod end : New nuts 60 Nm Brake disc to hub Front: 4 Nm Brake caliper to carrier Front: 30 Nm Brake caliper/carrier to hub Front: 95 Nm Brake caliper/carrier to hub Rear: 80 Nm New bolts ABS sensor Front: 8 Nm ABS sensor Rear: 15 Nm Road wheels : 110 Nm
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Mitsubishi cantor 4d32 eng need torque specs flywheel,rod&main brgs head

Sure, here are the torque specifications for the flywheel, rod & main bearings, and head bolts for a Mitsubishi Canter 4D32 engine: Flywheel bolts: 77.46 lb-ft (105 Nm) + 90 degrees Connecting rod nuts: 37.38 lb-ft (50 Nm) + 90 degrees Main bearing cap bolts: 27.31 lb-ft (37 Nm) + 90 degrees Cylinder head bolts: 40.59 lb-ft (55 Nm) in the first step, then 90.63 lb-ft (123 Nm) + 90 degrees It is important to follow these torque specifications carefully to prevent damage to the engine. If you are not comfortable tightening the bolts yourself, it is best to take your car to a qualified mechanic. Here are some additional tips for tightening engine bolts: Use a torque wrench to ensure that the bolts are tightened to the correct specification. Tighten the bolts in a star pattern, working from the center out. Do not overtighten the bolts, as this can damage the threads. By following these tips, you can help to ensure that your Mitsubishi Canter 4D32 engine is properly maintained and will last for many miles.
2helpful
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2002 audi tt 225 bhp cranksharft torque settings

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1. Main bearings: Renew bolts = Yes
2. Main bearings: Stage 1 = 65 Nm
3. Main bearings: Stage 2 = 90 degrees
4. Big end bearings: Renew bolts / nuts = Yes
5. Big end bearings: Stage 1 = 30 Nm
6. Big end bearings: Stage 2 = 90 degrees
7. Flywheel / driveplate = 60 Nm + 90 degrees (use new bolts / nuts)
8. Crankshaft pulley / damper centre bolt = 90 Nm + 90 degrees (use new bolts)


3helpful
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Need torque for a 2000 Toyota Celicia GT 1.8L

Crank Main caps Tightening Torque

For the 12 Pointed Head Bearing Cap Sub-Assembly Bolts
Start from center bolts and tighten in a clockwise rotation working out
Step 1 all bolts 22 Nm or 16 ft lb
Step 2 all bolts 44 Nm or 32 ft lb
Step 3 all bolts 45 degrees additional clockwise rotation using an angle indicator.
Step 4 all bolts 45 degrees additional clockwise rotation using an angle indicator.

Hexagon Head Bearing Cap Sub-Assembly Bolts
1ZZ-FE Engine 18.5 Nm (14 ft.lb)
2ZZ-GE Engine 18 Nm (13 ft.lb)

Connecting rod:
1. Apply a light coat of engine oil on the threads and under the heads of the connecting rod cap bolts.
2. Install and alternately tighten the 2 connecting rod cap bolts in several passes. Torque: 1ZZ-FE: 20 Nm (204 kgf-cm, 15 ft. lbs.) 2ZZ-GE: 30 Nm (306 kgf-cm, 22 ft. lbs.) If any of the connecting rod cap bolts does not meet the torque specification, replace the connecting rod cap bolts.
3. Retighten the cap bolts by 90° more
4. Check that the crankshaft turns smoothly.

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