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[Datsun 1200 encyclopedia]

Engine block

(Difference between revisions)

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Category: Engine Mechanical
Revision as of 03:54, 15 November 2012
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(->Connecting Rods)
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-The A12 engine of the Datsun 1200 features a modern lightweight cast-iron cylinder block.+The A12 engine of the Datsun 1200 features a modern lightweight cast-iron cylinder block. For an overview of all A-series engines see [[Block Comparison]].
-Also see [[Block Comparison]]+= Identification =
 +A12 can be positively identified by looking for the engine Stamped ID.
-== Identification ==+ See Main Article: [[Engine ID Mark]]
-A12 - see main article: [[Engine ID Mark]]+
-http://datsun1200.com/modules/myalbum/photos/thumbs/770.jpg+{{Album!|770}}
-== Ventilation ==+= Ventilation =
-[http://datsun1200.com/modules/myalbum/photo.php?lid=18283 http://datsun1200.com/uploads/photos/18283.jpg]+Under the block [[Breather Tubes|breather pipe]], this steel mesh separates out the oil vapor from [[PCV|crankcase ventilation]] air.
 +<br>{{Album|18283}} {{Album|27096}}
-Under the block breather pipe, this steel mesh separates out the oil vapor from [[PCV|crankcase ventilation]] air.+ [[Block_%26_Pan_Part_Numbers|Part Numbers]]
 + {{searchPart|11037-H1000}} NET-STEEL CRANK CASE A12/A13/A14/A15
 + 08310-61214 SCREW-MACHINE (2)
 + 11038-H1000 PLATE-BAFFLE CRANK CASE A12/A13S
 + 11038-H6200 PLATE-BAFFLE CRANK CASE A14 EARLY H72 BLOCK
 + 11038-H9700 PLATE-BAFFLE CRANK CASE A14 LATE + A15 G34 BLOCK
-== Block Height ==+H97 baffle plate
- A10 Deck Height: 179.1mm +<br>{{Album|30364}}
- A12/A12A Deck Height: 189.1mm +
- A14/A15 Deck Height: A12 height 204.1mm+
-== Cylinder Blocks ==+baffle plate bolts in rear portion of the engine block
-A12 Deck Height: 189.1mm (?)+<br>{{UploadPost|174_67b163d1d47cf.jpg|498788}}
-~2.5 liter coolant capacity+&#26085;&#29987; A&#22411; &#12502;&#12525;&#12483;&#12463;&#25563;&#27671;&#12496;&#12483;&#12501;&#12523;
-The A10 block is 10mm shorter than A12 block, while A14/A15 block is 15mm taller than A12 block. Length is the same for a A-series engine blocks.+= Dimensions =
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=19202 http://datsun1200.com/uploads/thumbs/19202.jpg]+A12 Deck Height is 189.1 mm. A10 engines are 10 mm shorter, and A14 is 15 mm taller. For more details see [[Block Comparison#Dimensions]].
 +Length is the same for a A-series engine blocks.
-Also see: [[Block Comparison]]+{{Album|19202}}
-=== Original Block ===+= Drain Plug =
-<br>H10 or M08 block castings +{{AlbumC|15004|h=50|shape=27205|t=128|l=310}}
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=19179 http://datsun1200.com/modules/myalbum/photos/thumbs/19179.jpg] +
-<br>* 11010-H2300 A12 BARE BLOCK 73mm/2.87" bore size+
-=== Redesigned Block ===+ Buy at [http://www.datsun1200.asia/category/select/pid/9244 Bprojects]
-* 11010-H5000 A12 73mm bore size+ [[Block & Pan Part Numbers|08931-30410]] PLUG-TAPER THREAD WATER DRAIN
-* 11010-G1600 A12 From June 1975 (?) + * Fit all A-series block all years
-* 11010-G1618 A12 B120 7908-8503 + * Size: 1/4 inch NPT
-* 11010-G1619 A12 B120 8504- + * Wrench Size: 14mm
-*: M79 casting+ * Overall length: 18.5mm
-*: [http://datsun1200.com/modules/myalbum/photo.php?lid=21287 http://datsun1200.com/uploads/thumbs/21287.jpg]+
-* 11010-H9960 A12A BARE BLOCK B310 75mm/2.95" bore size+
-* 11010-H8500 Sedan, Coupe B310 -8010 +
-* 11010-H9463 Van B310 8011-8109, 8110-+
-M79 casting, from late 1200 Sunny Truck +{{Album|28804|was=Photo\08931-30410.jpg\Datsun%201200/Parts}} {{Album|28805|was=Photo\08931-30410-.jpg\Datsun%201200/Parts}}
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=21287 http://datsun1200.com/uploads/thumbs/21287.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=21288 http://datsun1200.com/uploads/thumbs/21288.jpg] +
-=== Tall Block ===+= Head Locating Dowels =
-Deck height: 204.1mm (?), or 15mm taller than an A12/A12A block. Length is the same.+Starting with A12 engine for B210 and including later 1200, dowels were used to locate the [[Cylinder Head]].
-* 11010-H6200 [1974] A13 BARE BLOCK 73mm/2.87" bore size+{{Photo|head_dowels.jpg}}
-* A14 cast "A14" above fuel pump+
-** H72 or G30+
-* 11010-H9700 A14/A15 BARE BLOCK 76mm/2.99" bore size+
-** G34+
-*: [http://datsun1200.com/modules/myalbum/photo.php?lid=20446 http://datsun1200.com/uploads/thumbs/20446.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=20447 http://datsun1200.com/uploads/thumbs/20447.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=20444 http://datsun1200.com/uploads/thumbs/20444.jpg]+
-=== Overbore ===+ 11053-73400 DOWEL-BLOCK TO HEAD 14 diameter 2
-The 1971-1973 A12, the one with the front distributor, can usually be bored to 76mm. This is the same as a stock A14. There are probably some dud blocks around, but generally 76mm is fine. Pistons of 76.5 mm size and larger were offered through the Datsun competition department and others back in the 70's, so it's a factory approved bore size.+
-A14 pistons use a 19mm wrist pin while the A12 rods have a 17.5mm hole, so you have choices:+= Cylinder Blocks =
-* Bore the original rod to 19mm. This is most commonly done+ Also see: [[Block Comparison]]
-* Find a set of late A12 rods. There seems to have been a change in the later rods and these forgings look like they are the ones that were used for the A12A & A13 engines. [more on this later]. These rods have more 'meat' around the pin hole & would be stronger than a 1200 rod after the pin hole was bored to 19mm.+
-* Find a set of A12A or 1980's A13 rods as these have the right length and the correct wrist pin hole for the A14 pins+
 +The block has ~2.5 liter [[Radiator|coolant capacity]].
-73mm bore piston used the 17.5mm piston pin diameter:+{{Photo|n59975533yoshi_senna-img600x450-1211090038fvol0413765.jpg}}
-* A10+
-* 1971-1973 A12 (1200)+
-* 1974-up A12 +
-* 1974 A13 (tall block engine)+
-A series pistons for engines with 75mm bore used a 19mm pin:+== Original Block ==
-* A12A - USA & Japan only+ 11010-H2300 A12 BARE BLOCK 73mm/2.87" bore size
 + * running change replaced 11010-H1000
-76mm bore size also used the 19mm pin:+H10 block castings
-* A14 +<br>{{Album|19179}}
-* A15 +
-* 1979-'81 (Asia only)+
-A12A and late A13s were just bored out A12s, so they had the shorter A12 length rods, but with the bigger pin size. The crankshaft is interchangeable between early A12, late A12, late A13 and A12A.+== Redesigned Block ==
 + * 11010-H5000 A12 [[B120]] From July 1973 (?)
 + * 11010-G1600 A12 B120 From June 1975 (?)
 + * 11010-G1618 A12 B120 7908-8503
 + * 11010-G1619 A12 B120 8504- (M79 casting)
-== Crankshafts ==+H50 casting, from 1974-1985(?) Datsun 1200
 +<br>{{Album|20516}}
-Stroke:+M79 casting, from 1985-1994 Datsun 1200
-* 70mm (2.76 in.) stroke: A12/A12A/A13(1980)+<br>{{Album|21287}} {{Album|21288}}
-* 77mm (3.03 in.) stroke: A13(1974)/A14+
-* 82mm (3.23 in.) stroke: A15 +
-For more details and part numbers, see [[Crankshaft]]+= Overbore =
 +The 1971-1973 A12, the one with the front distributor, can usually be bored to 76mm. This is the same as a stock A14 and will increase HP much more than going to high compression.
-== Connecting Rods ==+ See main article: [[Bored And Stroked]]
-[http://datsun1200.com/modules/myalbum/photo.php?lid=2326 http://datsun1200.com/modules/myalbum/photos/thumbs/15725.jpg]+
- 4 of each required: (measurement is center-to-center)+= Crankshafts =
- * 117.5 mm 12100-18000 A10 ASS'Y-ROD, connecting +A12 uses a forged crankshaft, so it is plenty strong -- even for 8500 RPM use.
- * 121.5 mm 12100-H1000 A12 CONNECTING ROD [19 mm piston pin]+
- * 121.5 mm 12100-18500 A12A CONNECTING ROD [20 mm piston pin]+
- * 133.0 mm 12100-16200 [[A13]] (1974) CONNECTING ROD+
- * 133.0 mm 12100-17200 A14/A15 CONNECTING ROD+
-The weights of the 4 stock A15 rods with ARP rod bolts and nuts installed, no bearings is: 514.00 to 511.81 grams.+Stroke: 70mm (2.76 in.)
-=== Bearings ===+For more details and part numbers, see [[Crankshaft]]
-The -25720/-H2310 bearing shell produces the most desirable bearing clearance for racing purposes when applied to a standard size crankshaft. The other shells exist in order to obtain proper clearance when compensating for the variations in the crankshaft or connecting rod journals.+
- +
-8 each required:+
-* 12111-25720 .0590"+
-* 12111-25721 .0588"+
-* 12111-25722 .0585"+
-* 12111-25723 .0592"+
-* 12111-25724 .0583"+
- +
-=== Rod Studs ===+
-The same rod studs are used by all A-series engines, from A12 to A15. +
- +
-The Datsun rod bolt is a true stretch bolt and should be torqued only once. New bolts should be installed at every disassembly. 8 each required:+
-* 12109-H1001 CONNECTING ROD BOLT TOKYO RASI $3.63 USD+
-** superceded 12109-18000 BOLT-connecting rod+
-* 12109-H1011 CONNECTING ROD BOLT TOKYO SEATI+
-** alternate supplier+
-*: [http://datsun1200.com/modules/myalbum/photo.php?lid=22788 http://datsun1200.com/uploads/thumbs/22788.jpg]+
- +
-* 12112-H1000 NUT-HEX CONNECTING ROD $1.47 USD+
-** superceeded 12112-18000 or 89-11238+
-*: [http://datsun1200.com/modules/myalbum/photo.php?lid=22789 http://datsun1200.com/uploads/thumbs/22789.jpg]+
- +
-ARP Brand connecting rod stud set+
-* 102-6002 about $60 USD [compared to about $32 from Nissan]+
-*: [http://datsun1200.com/modules/myalbum/photo.php?lid=20419 http://datsun1200.com/uploads/thumbs/20419.jpg]+
- +
-== Weight ==+
-For maximum performance, use the lightest rod that will hold up to the intended usage. Stock A-series rods are forged, and will last a lifetime in a stock or moderately upgraded performance engine. There is no need to use a heavier duty rod unless you are using a high boost turbo or supercharger, or revving higher than 8500 RPM. +
- +
- +
-For road racing engines with sustained high-RPM loads, a heavier duty rod may be required.+
 += Connecting Rods =
 +Stock A-series rods are forged, and will last a lifetime in a stock or moderately upgraded performance engine. There is no need to use a heavier duty rod unless you are using a high boost turbo or supercharger, or revving higher than 8500 RPM.
-The weight of a stock A15 rod with ARP rod bolts and nuts installed, no bearings is:+ See main article: [[Connecting Rods]]
- Approximately 514 grams+{{Album!|15725}}
-== Pistons == += Pistons =
A12 engine came with dished pistons for approximately 9.0:1 compression ration. Standard bore size for the A12 or A13 block is 73mm/2.874". Pistons are cast. Nissan Competition does not recommend forged pistons for street use. A12 engine came with dished pistons for approximately 9.0:1 compression ration. Standard bore size for the A12 or A13 block is 73mm/2.874". Pistons are cast. Nissan Competition does not recommend forged pistons for street use.
 + See Main Article: [[Piston]]
-See main article: [[Piston]]+= Main Bearing Caps =
 + Also see: [[ARP]]
-= Part Numbers =+ [[Block & Pan Part Numbers|12293-18001]] BOLT-MAIN BEARING CAP (10) L=72.5 <> 12293-01M00
-== USA ==+ * A12/A14/A15 engine (quantity 10)
- B110 RAW LIST+ * L16, L18 and L20B engine (10)
-12100-H1000 ASSY-CONNECTING ROD+ * 720,D21,S110 with Z20/Z22/Z24E/Z24I (10)
- 12109-H1001 BOLT-CONNECTING ROD (TOKYO RASI)+ * 910,S130 with L24/L28E (14)
- 12109-H1011 BOLT-CONNECTING ROD (TOKAI SEIAT+ * B11, N10/N12 with E15/E16 (10)
- 12112-18000 NUT-HEX CONNECTING ROD+ * D21 PICKUP with KA24E engine (10)
- 12111-20906 BUSHING-CONNECTING ROD UNDERSIZE 100+
- 12111-20910 BEARING-CONNECTING ROD STD+
- 12111-20900 BEARING-CONNECTING ROD STD+
- 12111-20901 BUSHING-CONNECTING ROD UNDERSIZE 8+
- 12111-20902 BUSHING-CONNECTING ROD UNDERSIZE 12+
- 12111-20903 BUSHING-CONNECTING ROD UNDERSIZE 25+
- 12111-20905 BUSHING-CONNECTING ROD UNDERSIZE 75+
- 12111-20904 BUSHING-CONNECTING ROD UNDERSIZE 50+
 +{{UploadPost|174_5ac95f2837b42.jpg|488014}}
-[[Category:Engine Mechanical]]+[[Category:Engine Mechanical]]{{End}}

Current revision

The A12 engine of the Datsun 1200 features a modern lightweight cast-iron cylinder block. For an overview of all A-series engines see Block Comparison.

Contents

[edit]

Identification

A12 can be positively identified by looking for the engine Stamped ID. 

See Main Article: Engine ID Mark

770.jpg

[edit]

Ventilation

Under the block breather pipe, this steel mesh separates out the oil vapor from crankcase ventilation air.
18283.jpgAlbum 18283 27096.jpgAlbum 27096 

Part Numbers
11037-H1000ᴳ NET-STEEL CRANK CASE A12/A13/A14/A15
08310-61214 SCREW-MACHINE (2)
11038-H1000 PLATE-BAFFLE CRANK CASE A12/A13S
11038-H6200 PLATE-BAFFLE CRANK CASE A14 EARLY H72 BLOCK
11038-H9700 PLATE-BAFFLE CRANK CASE A14 LATE + A15 G34 BLOCK

H97 baffle plate
30364.jpgAlbum 30364

baffle plate bolts in rear portion of the engine block
174_67b163d1d47cf.jpgPost 498788

日産 A型 ブロック換気バッフル

[edit]

Dimensions

A12 Deck Height is 189.1 mm. A10 engines are 10 mm shorter, and A14 is 15 mm taller. For more details see Block Comparison#Dimensions.

Length is the same for a A-series engine blocks.

19202.jpgAlbum 19202

[edit]

Drain Plug

15004.jpg27205.png 

Buy at Bprojects
08931-30410 PLUG-TAPER THREAD WATER DRAIN
* Fit all A-series block all years
* Size: 1/4 inch NPT
* Wrench Size: 14mm
* Overall length: 18.5mm

28804.jpgAlbum 28804 28805.jpgAlbum 28805

[edit]

Head Locating Dowels

Starting with A12 engine for B210 and including later 1200, dowels were used to locate the Cylinder Head.

head_dowels.jpg 

11053-73400 DOWEL-BLOCK TO HEAD 14 diameter 2
[edit]

Cylinder Blocks 

Also see: Block Comparison

The block has ~2.5 liter coolant capacity.

n59975533yoshi_senna-img600x450-1211090038fvol0413765.jpg

[edit]

Original Block 

11010-H2300 A12 BARE BLOCK 73mm/2.87" bore size 
* running change replaced 11010-H1000

H10 block castings
19179.jpgAlbum 19179

[edit]

Redesigned Block 

* 11010-H5000 A12 B120 From July 1973 (?)
* 11010-G1600 A12 B120 From June 1975 (?) 
* 11010-G1618 A12 B120 7908-8503
* 11010-G1619 A12 B120 8504- (M79 casting)

H50 casting, from 1974-1985(?) Datsun 1200
20516.jpgAlbum 20516

M79 casting, from 1985-1994 Datsun 1200
21287.jpgAlbum 21287 21288.jpgAlbum 21288

[edit]

Overbore

The 1971-1973 A12, the one with the front distributor, can usually be bored to 76mm. This is the same as a stock A14 and will increase HP much more than going to high compression. 

See main article: Bored And Stroked
[edit]

Crankshafts

A12 uses a forged crankshaft, so it is plenty strong -- even for 8500 RPM use.

Stroke: 70mm (2.76 in.)

For more details and part numbers, see Crankshaft

[edit]

Connecting Rods

Stock A-series rods are forged, and will last a lifetime in a stock or moderately upgraded performance engine. There is no need to use a heavier duty rod unless you are using a high boost turbo or supercharger, or revving higher than 8500 RPM. 

See main article: Connecting Rods

15725.jpg

[edit]

Pistons

A12 engine came with dished pistons for approximately 9.0:1 compression ration. Standard bore size for the A12 or A13 block is 73mm/2.874". Pistons are cast. Nissan Competition does not recommend forged pistons for street use. 

See Main Article: Piston
[edit]

Main Bearing Caps 

Also see: ARP

12293-18001 BOLT-MAIN BEARING CAP (10) L=72.5 <> 12293-01M00
* A12/A14/A15 engine (quantity 10)
* L16, L18 and L20B engine (10)
* 720,D21,S110 with Z20/Z22/Z24E/Z24I (10)
* 910,S130 with L24/L28E (14)
* B11, N10/N12 with E15/E16 (10)
* D21 PICKUP with KA24E engine (10)

174_5ac95f2837b42.jpgPost 488014 

¤

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