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[Datsun 1200 encyclopedia]

Crankshaft

(Difference between revisions)

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Category: Engine Mechanical

Revision as of 11:29, 7 January 2012
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Revision as of 11:33, 7 January 2012
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Line 149: Line 149:
12308-H1000 WASHER-PULLEY BOLT 12308-H1000 WASHER-PULLEY BOLT
12309-78200 BOLT-CRANK PULLEY 12309-78200 BOLT-CRANK PULLEY
 + 12212-H1000 SET-BEARING US 1.00MM
 + 12207-M7201 SET-BEARING STD
 + 12207-H1000 SET-BEARING STD
 + 12208-H1000 SET-BEARING US 0.20MM
 + 12209-H1000 SET-BEARING US 0.25MM
 + 12210-H1000 SET-BEARING US 0.50MM
 + 12211-H1000 SET-BEARING US 0.75MM
[[Category:Engine Mechanical]] [[Category:Engine Mechanical]]

Revision as of 11:33, 7 January 2012

The crankshaft is interchangeable between early A12, A12GX, late A12, late A13 and A12A. Only the flywheel bolts differ, after 1974 using metric bolts.

Contents

[hide]

Overview

Stroke comes in four sizes:

  • 70mm (2.76 in.) stroke: A12/A12A/A13(1980)
  • 77mm (3.03 in.) stroke: A13(1974)/A14
  • 82mm (3.23 in.) stroke: A15

17133.jpg

Flywheel Bolts

  • 1966-1973: crank uses english-system 3/8" x 24 UNF bolts
    • 12315-18000 BOLT-flywheel & drive plate 6 A10
    • 12315-H1001 BOLT-FLY WHEEL 6 A12 MANUAL
    • Will ARP 206-2802 work? For BMC A-series engines (UHL Under Head Length 0.900") $18 USD/set of 6


  • 1974-up: crank uses Metric M10 1.25 bolts (from '73-7)
    • A12,A13,A14,A12A,A15
    • 12315-H6900 BOLT-FLYWHEEL 6 $4.83 USD
    • replaced 12315-H6200
    • Will ARP 203-2802 work? For 4AGE engines (UHL Under Head Length 1.050") $22 USD/set of 8

Misc

Also see: Bored And Stroked for crankshaft modifications you can perform at home.


Apparently there are two forgings of crankshaft:

  • Heavy duty
  • Light weight: thinner straight sided counterweights that also have small scollops out of them. This may be the Datsun Competition crank.


  • Twin-carb engine (A12GX, A12T and A14T) crankshafts are the same as a standard engines.
  • 1974-up cranks use metric flywheel bolts. Early engines used British threads. See A Engine Redesign
  • Front bolt, that holds the front pulley on, is:
    • Part Number: 12309-78200 ($4.58)
    • M16 x 1.50 (fine) pitch
    • 15mm diameter
    • 27mm long
    • The head is ?mm hex and about 15 mm thick.
    • Torque specification: 15-16 kg/m (108-116 ft. lb.)

Identification

  • A12
    18244.jpg


  • A13 low deck, 70mm 9.51 kg scalloped crank throws
    17135.jpg 17136.jpg 18243.jpg
  • A14, scalloped crank throws (H8940)
    3950.jpg 3950.jpg 14241.jpg 14535.jpg 17137.jpg
  • A14
    8966.jpg 8967.jpg 11418.jpg


6110.jpg

Crankshaft Pulley

See Crankshaft Pulley

Lightened Crankshaft

Discussion: JTS Cranks

5538.jpg 7306.jpg 8478.jpg 8479.jpg 8617.jpg 9665.jpg

Part Numbers

  • 12200-H8500 CRANKSHAFT ASSY B310 A12S, A13S
  • 12200-H8515 A12/A12A CRANKSHAFT 70mm/2.76" stroke
  • 12200-H5720 A12 COMPETITION CRANKSHAFT 70mm/2.76" stroke
  • 12200-H8915 A13/A14 CRANKSHAFT 77mm/3.03" stroke
    • Weight 26.2 lbs
  • 12200-G3400 A15 CRANKSHAFT 82mm/3.23" stroke

Old Numbers:

  • 12200-H1000 ASSY-CRANKSHAFT 1 A12 MANUAL - $624.02
  • 12200-H1001 CRANKSHAFT 1 A12 -671 12 12200-H1000 superceded
  • 12200-H1000 CRANKSHAFT 1 A12 0671- 2 12200-H1001 superceded
  • 12200-H5000 CRANKSHAFT 1 A12 0572- 2 12200-H1000 $624.02

BEARING SET

  • 12212-H1000 SET-BEARING US 1.00MM 1 A12 -
  • 12207-M7201 SET-BEARING STD 1 A12 - 12207-H1000 $71.58
  • 12207-H1000 SET-BEARING STD 1 A12 -
  • 12208-H1000 SET-BEARING US 0.20MM 1 A12 -
  • 12209-H1000 SET-BEARING US 0.25MM 1 A12 -
  • 12210-H1000 SET-BEARING US 0.50MM 1 A12 -
  • 12211-H1000 SET-BEARING US 0.75MM 1 A12 -


MAIN BEARING (#1/#5, SHELL THICKNESS)
4 each required

  • 12215-H2310 .0720"
  • 12215-H2311 .0718"
  • 12215-H2312 .0715"


MAIN BEARING (#2/#4, SHELL THICKNESS)
4 each required

  • 12231-H2310 .0720"
  • 12231-H2311 .0718"
  • 12231-12312 .0715"


MAIN BEARING (CENTER, SHELL THICKNESS)
2 required

  • 12247-H2310 .0720"
  • 12247-H2311 .0718"
  • 12247-H2312 .0715"

SEAL, Front

  • 13042-18000 SEAL-OIL CRANKSHAFT FRONT 1 A12 - superceded
  • 13510-H1000 SEAL-OIL CRANKSHAFT FRONT (NOK) 1 A12 0271- 2 13042-18000 $7.24

SEAL, Rear

  • 12279-18000 SEAL-OIL CRANKSHAFT REAR 1 A12 - $81.18
  • 12279-18010 SEAL-OIL CRANKSHAFT REAR (NDK) 1 A12 0271- 2 12279-18000 NLA
  • 12279-H1000 SEAL-OIL CRANKSHAFT REAR (NOK) 1 A12 0271- $81.18

PILOT BUSHING (also see Pilot Bushing

  • 32202-18000 BUSHING-PILOT 1 A12 MANUAL - $3.98

SLINGER

  • 12302-18000 THROWER-OIL CRANKSHAFT 1 A12 - $1.57

FLYWHEEL BOLTS

  • 12315-H1001 BOLT-FLY WHEEL 6 A12 MANUAL - $4.38
  • 12315-H1000 BOLT-FLY WHEEL 6 A12 AUTOMATIC - $3.51
  • 12330-20300 PILOT-CONVERTER 1 A12 AUTOMATIC - $18.66
  • 12333-20300 PLATE-CRANK CONVERTER 1 A12 AUTOMATIC - $9.44

USA

B110 RAW LIST
12200-H1000 ASSY-CRANKSHAFT
12200-H1001 CRANKSHAFT
12200-H1000 CRANKSHAFT
12200-H5000 CRANKSHAFT
00933-20650 PLUG-TAPER
01647-00011 PLUG-TAPER
32202-18000 BUSHING-PILOT
12316-30000 KEY-WOODLUF 5X16
13021-H1000 SPROCKET-CRANK
12301-30000 WASHER-PACKING CRANKSHAFT
12299-18000 SHIM-CRANK SPROCKET
12302-18000 THROWER-OIL CRANKSHAFT
12303-H1001 PULLEY-CRANKSHAFT
12303-18002 PULLEY-CRANKSHAFT
12308-H1000 WASHER-PULLEY BOLT
12309-78200 BOLT-CRANK PULLEY
12212-H1000 SET-BEARING US 1.00MM
12207-M7201 SET-BEARING STD
12207-H1000 SET-BEARING STD
12208-H1000 SET-BEARING US 0.20MM
12209-H1000 SET-BEARING US 0.25MM
12210-H1000 SET-BEARING US 0.50MM
12211-H1000 SET-BEARING US 0.75MM