Crankshaft

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Category: Engine Mechanical

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Revision as of 01:53, 27 August 2010 ddgonzal (Talk | contribs) (->Pulley) <- Previous diff		Revision as of 06:28, 30 November 2011 ddgonzal (Talk | contribs) Next diff ->
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-	The crankshaft is interchangeable between early A12, A12GX, late A12, late A13 and A12A. Only the flywheel bolts differ, after [[A-series_Engine_Changes#1974|1974]] using metric bolts. Stroke comes in four sizes:	+	The crankshaft is interchangeable between early A12, A12GX, late A12, late A13 and A12A. Only the flywheel bolts differ, after [[A-series_Engine_Changes#1974|1974]] using metric bolts.
		+
		+	= Overview =
		+	Stroke comes in four sizes:
	* 70mm (2.76 in.) stroke: A12/A12A/A13(1980)		* 70mm (2.76 in.) stroke: A12/A12A/A13(1980)
	* 77mm (3.03 in.) stroke: A13(1974)/A14		* 77mm (3.03 in.) stroke: A13(1974)/A14
Line 37:		Line 40:
	** The head is ?mm hex and about 15 mm thick.		** The head is ?mm hex and about 15 mm thick.
	** Torque specification: 15-16 kg/m (108-116 ft. lb.)		** Torque specification: 15-16 kg/m (108-116 ft. lb.)
		+
		+	= Identification =
		+	* A12
		+	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=18244 http://datsun1200.com/modules/myalbum/photos/thumbs/18244.jpg]
		+
		+
		+	* A13 low deck, 70mm 9.51 kg scalloped crank throws
		+	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=17135 http://datsun1200.com/modules/myalbum/photos/thumbs/17135.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=17136 http://datsun1200.com/modules/myalbum/photos/thumbs/17136.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=18243 http://datsun1200.com/modules/myalbum/photos/thumbs/18243.jpg]
		+
		+	* A14, scalloped crank throws (H8940)
		+	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=3949 http://datsun1200.com/modules/myalbum/photos/thumbs/3950.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=3949 http://datsun1200.com/modules/myalbum/photos/thumbs/3950.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=14241 http://datsun1200.com/modules/myalbum/photos/thumbs/14241.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=14535 http://datsun1200.com/modules/myalbum/photos/thumbs/14535.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=17137 http://datsun1200.com/modules/myalbum/photos/thumbs/17137.jpg]
		+
		+	* A14
		+	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=8966 http://datsun1200.com/modules/myalbum/photos/thumbs/8966.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8967 http://datsun1200.com/modules/myalbum/photos/thumbs/8967.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11418 http://datsun1200.com/modules/myalbum/photos/thumbs/11418.jpg]
		+
		+
		+	[http://datsun1200.com/modules/myalbum/photo.php?lid=6110 http://datsun1200.com/modules/myalbum/photos/thumbs/6110.jpg]
		+
		+	= Crankshaft Pulley =
		+	See [[Crankshaft Pulley]]
		+
		+	= Lightened Crankshaft =
		+	Discussion: [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=37775&forum=1 JTS Cranks]
		+
		+	[http://datsun1200.com/modules/myalbum/photo.php?lid=5538 http://datsun1200.com/modules/myalbum/photos/thumbs/5538.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=7306 http://datsun1200.com/modules/myalbum/photos/thumbs/7306.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8478 http://datsun1200.com/modules/myalbum/photos/thumbs/8478.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8479 http://datsun1200.com/modules/myalbum/photos/thumbs/8479.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8617 http://datsun1200.com/modules/myalbum/photos/thumbs/8617.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=9665 http://datsun1200.com/modules/myalbum/photos/thumbs/9665.jpg]
	= Part Numbers =		= Part Numbers =
Line 102:		Line 130:
	* 12330-20300 PILOT-CONVERTER 1 A12 AUTOMATIC - $18.66		* 12330-20300 PILOT-CONVERTER 1 A12 AUTOMATIC - $18.66
	* 12333-20300 PLATE-CRANK CONVERTER 1 A12 AUTOMATIC - $9.44		* 12333-20300 PLATE-CRANK CONVERTER 1 A12 AUTOMATIC - $9.44
-
-	== Pulley ==
-	* 12316-30000 KEY-WOODLUF 5X16 2 A12 - $1.13
-	* 12303-H1001 PULLEY-CRANKSHAFT 1 A12 0272- 0 12303-18002 $37.66
-	* 12303-18002 PULLEY-CRANKSHAFT 1 A12 - superceded
-	* 12308-H1000 WASHER-PULLEY BOLT 1 A12 - $1.29
-	** 34.5mm OD, 0.64 in (16.2mm) ID, 8mm thick
-	* 12309-78200 BOLT-CRANK PULLEY 1 A12 - $5.73
-	** M16 x 1.50 (fine) pitch
-	** 15mm diameter
-	** 27mm long
-	** The head is 27mm hex and about 15 mm thick.
-	** Torque: 15-16 kg/m (108-116 ft. lb.)
-
-
-	=== Nissan Competition ===
-	* 99996-H1160 SMALL DIAMETER CRANK PULLEY
-	** Degreed to 40 degrees and has a diameter of 101mm/4.0". Can be used with stock alternator and w/p pulleys.
-
-	= Identification =
-	* A12
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=18244 http://datsun1200.com/modules/myalbum/photos/thumbs/18244.jpg]
-
-
-	* A13 low deck, 70mm 9.51 kg scalloped crank throws
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=17135 http://datsun1200.com/modules/myalbum/photos/thumbs/17135.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=17136 http://datsun1200.com/modules/myalbum/photos/thumbs/17136.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=18243 http://datsun1200.com/modules/myalbum/photos/thumbs/18243.jpg]
-
-	* A14, scalloped crank throws (H8940)
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=3949 http://datsun1200.com/modules/myalbum/photos/thumbs/3950.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=3949 http://datsun1200.com/modules/myalbum/photos/thumbs/3950.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=14241 http://datsun1200.com/modules/myalbum/photos/thumbs/14241.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=14535 http://datsun1200.com/modules/myalbum/photos/thumbs/14535.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=17137 http://datsun1200.com/modules/myalbum/photos/thumbs/17137.jpg]
-
-	* A14
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=8966 http://datsun1200.com/modules/myalbum/photos/thumbs/8966.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8967 http://datsun1200.com/modules/myalbum/photos/thumbs/8967.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=11418 http://datsun1200.com/modules/myalbum/photos/thumbs/11418.jpg]
-
-
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=6110 http://datsun1200.com/modules/myalbum/photos/thumbs/6110.jpg]
-
-	= Crankshaft Pulley =
-	* 12303-18002 PULLEY-CRANKSHAFT -0272 (multiple timing marks)
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=20598 http://datsun1200.com/uploads/thumbs/20598.jpg]
-	* 12303-H1001 PULLEY-CRANKSHAFT 0272- B110, also B210 with A13 (single timing mark)
-	* 12303-H5010 PULLEY-crankshaft (for cooler) B210 A12, A14 except USA (dual groove)
-	* 12303-H7201 PULLEY-CRANKSHAFT USA B210 with A14 (dual-groove)
-
-	B310
-	* 12303-H1001
-	* 12303-H1002
-	* 12303-H8500
-	* 12303-H8501
-	* 12303-H8900 dual pulley
-	* 12303-H8905 dual pulley
-	*: Three kinds: small, medium, large front pulley
-	*: [http://datsun1200.com/modules/myalbum/photo.php?lid=20596 http://datsun1200.com/uploads/thumbs/20596.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=20597 http://datsun1200.com/uploads/thumbs/20597.jpg]
-
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=20080 http://datsun1200.com/uploads/thumbs/20080.jpg]
-
-
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=15885 http://datsun1200.com/uploads/thumbs/15885.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=20601 http://datsun1200.com/uploads/thumbs/20601.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=20602 http://datsun1200.com/uploads/thumbs/20602.jpg]
-
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=8262 http://datsun1200.com/uploads/thumbs/8262.jpg]
-
-
-	Triple-Belt
-	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=20595 http://datsun1200.com/uploads/thumbs/20595.jpg]
-
-	= Lightened Crankshaft =
-	Discussion: [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=37775&forum=1 JTS Cranks]
-
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=5538 http://datsun1200.com/modules/myalbum/photos/thumbs/5538.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=7306 http://datsun1200.com/modules/myalbum/photos/thumbs/7306.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8478 http://datsun1200.com/modules/myalbum/photos/thumbs/8478.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8479 http://datsun1200.com/modules/myalbum/photos/thumbs/8479.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=8617 http://datsun1200.com/modules/myalbum/photos/thumbs/8617.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=9665 http://datsun1200.com/modules/myalbum/photos/thumbs/9665.jpg]
	[[Category:Engine Mechanical]]		[[Category:Engine Mechanical]]

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Revision as of 06:28, 30 November 2011

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 1 Overview 2 Flywheel Bolts 3 Misc 4 Identification 5 Crankshaft Pulley 6 Lightened Crankshaft 7 Part Numbers

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

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

  

• A13 low deck, 70mm 9.51 kg scalloped crank throws

  

• A14, scalloped crank throws (H8940)

  

• A14

  

Crankshaft Pulley

See Crankshaft Pulley

Lightened Crankshaft

Discussion: JTS Cranks

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

• 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

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