Engine block

(Difference between revisions)

Datsun 1200 encyclopedia | Recent changes | Edit this page | Page history | Switch to MediaWiki mode

Special pages Double redirects Broken redirects Disambiguation pages Log in / create account Preferences My watchlist Recent changes Upload file File list Gallery of new files User list Statistics Random page Orphaned pages Uncategorized pages Uncategorized categories Unused categories Unused files Wanted pages Wanted categories Most linked to pages Most linked to categories Articles with the most categories Most linked to images Articles with the most revisions Short pages Long pages New pages Oldest pages Dead-end pages All pages Prefix index List of blocked IP addresses and usernames Book sources Categories Export pages Version System messages Logs MIME search List redirects Popular pages Search

Printable version | Disclaimers | Privacy policy | Current revision
Category: Engine Mechanical

---

Revision as of 03:51, 7 July 2011 ddgonzal (Talk | contribs) (->Block Height) <- Previous diff		Current revision ddgonzal (Talk | contribs) (->Drain Plug)
Line 1:		Line 1:
-	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 Engine ID Mark	+
-	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=770 http://datsun1200.com/modules/myalbum/photos/thumbs/770.jpg]	+
-	== Ventilation ==	+	{{Album!|770}}
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=18283 http://datsun1200.com/uploads/photos/18283.jpg]	+
-	Under the block breather pipe, this steel mesh separates out the oil vapor from [[PCV|crankcase ventilation]] air.	+	= Ventilation =
		+	Under the block [[Breather Tubes|breather pipe]], this steel mesh separates out the oil vapor from [[PCV|crankcase ventilation]] air.
		+	<br>{{Album|27096}} {{Album|18283}}
-	== Block Height ==	+	[[Block_%26_Pan_Part_Numbers|11037-H1000]] NET-STEEL CRANK CASE A12/A13/A14/A15
-	A10 Deck Height: 179.1mm	+	08310-61214 SCREW-MACHINE (2)
-	A12/A12A Deck Height: 189.1mm	+	11038-H1000 PLATE-BAFFLE CRANK CASE A12/A13S
-	A14/A15 Deck Height: A12 height 204.1mm	+	11038-H6200 PLATE-BAFFLE CRANK CASE A14 EARLY H72 BLOCK
		+	11038-H9700 PLATE-BAFFLE CRANK CASE A14 LATE + A15 G34 BLOCK
-	== Cylinder Blocks ==	+	= Dimensions =
-	A12 Deck Height: 189.1mm (?)	+	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]].
-	~2.5 liter coolant capacity	+	Length is the same for a A-series engine blocks.
-	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.	+	{{Album|19202}}
-	<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=19202 http://datsun1200.com/uploads/thumbs/19202.jpg]	+
		+	= Drain Plug =
		+	{{AlbumC|15004|h=50|shape=27205|t=128|l=310}}
-	Also see: [[Block Comparison]]	+	Buy at [http://www.datsun1200.asia/category/select/pid/9244 Bprojects]
		+	[[Block & Pan Part Numbers|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
-	=== Original Block ===	+	{{Album|28804|was=Photo\08931-30410.jpg\Datsun%201200/Parts}} {{Album|28805|was=Photo\08931-30410-.jpg\Datsun%201200/Parts}}
-	<br>H10 or M08 block castings	+
-	<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 ===	+	= Head Locating Dowels =
-	* 11010-H5000 A12 73mm bore size	+	Starting with A12 engine for B210 and including later 1200, dowels were used to locate the [[Cylinder Head]].
-	* 11010-G1600 A12 From June 1975 (?)	+
-	* 11010-G1618 A12 B120 7908-8503	+
-	* 11010-G1619 A12 B120 8504-	+
-	*: M79 casting	+
-	*: [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	+	{{Photo|head_dowels.jpg}}
-	<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 ===	+	11053-73400 DOWEL-BLOCK TO HEAD 14 diameter 2
-	Deck height: 204.1mm (?), or 15mm taller than an A12/A12A block. Length is the same.	+
-	* 11010-H6200 [1974] A13 BARE BLOCK 73mm/2.87" bore size	+	= Cylinder Blocks =
-	* A14 cast "A14" above fuel pump	+	Also see: [[Block Comparison]]
-	** 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 ===	+	The block has ~2.5 liter [[Radiator|coolant capacity]].
-	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:	+	{{Photo|n59975533yoshi_senna-img600x450-1211090038fvol0413765.jpg}}
-	* Bore the original rod to 19mm. This is most commonly done	+
-	* 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	+
		+	== Original Block ==
		+	11010-H2300 A12 BARE BLOCK 73mm/2.87" bore size
		+	* running change replaced 11010-H1000
-	73mm bore piston used the 17.5mm piston pin diameter:	+	H10 block castings
-	* A10	+	<br>{{Album|19179}}
-	* 1971-1973 A12 (1200)	+
-	* 1974-up A12	+
-	* 1974 A13 (tall block engine)	+
-	A series pistons for engines with 75mm bore used a 19mm pin:	+	== Redesigned Block ==
-	* A12A - USA & Japan only	+	* 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)
-	76mm bore size also used the 19mm pin:	+	H50 casting, from 1974-1985(?) Datsun 1200
-	* A14	+	<br>{{Album|20516}}
-	* 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.	+	M79 casting, from 1985-1994 Datsun 1200
		+	<br>{{Album|21287}} {{Album|21288}}
-	== Crankshafts ==	+	= 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.
-	Stroke:	+	See main article: [[Bored And Stroked]]
-	* 70mm (2.76 in.) stroke: A12/A12A/A13(1980)	+
-	* 77mm (3.03 in.) stroke: A13(1974)/A14	+
-	* 82mm (3.23 in.) stroke: A15	+
-	For more details and part numbers, see [[Crankshaft]]	+	= Crankshafts =
		+	A12 uses a forged crankshaft, so it is plenty strong -- even for 8500 RPM use.
-	== Connecting Rods ==	+	Stroke: 70mm (2.76 in.)
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=2326 http://datsun1200.com/modules/myalbum/photos/thumbs/15725.jpg]	+
-	4 of each required:	+	For more details and part numbers, see [[Crankshaft]]
-	* 12100-18000 A10 ASS'Y-ROD, connecting 117.5mm	+
-	* 12100-H1000 A12 CONNECTING ROD 121.5mm/4.78" center-to-center	+
-	* 12100-18500 A12A CONNECTING ROD 121.5mm/4.78" center-to-center	+
-	* 12100-16200 [1974] A13 CONNECTING ROD 133mm/5.24" center-to-center	+
-	* 12100-17200 A14/A15 CONNECTING ROD 133mm/5.24" center-to-center	+
-		+
-	The weights of the 4 stock A15 rods with ARP rod bolts and nuts installed, no bearings is: 514.00 to 511.81 grams.	+
-		+
-		+
-	=== Bearings ===	+
-	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]]
		+	[[Block & Pan Part Numbers|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)
		+	{{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 1 Identification 2 Ventilation 3 Dimensions 4 Drain Plug 5 Head Locating Dowels 6 Cylinder Blocks 6.1 Original Block 6.2 Redesigned Block 7 Overbore 8 Crankshafts 9 Connecting Rods 10 Pistons 11 Main Bearing Caps

Identification

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

See Main Article: Engine ID Mark

Ventilation

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

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

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.

Album 19202

Drain Plug

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

Album 28804 Album 28805

Head Locating Dowels

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

11053-73400 DOWEL-BLOCK TO HEAD 14 diameter 2

Cylinder Blocks

Also see: Block Comparison

The block has ~2.5 liter coolant capacity.

Original Block

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

H10 block castings
Album 19179

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
Album 20516

M79 casting, from 1985-1994 Datsun 1200
Album 21287 Album 21288

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

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

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

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

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)

Post 488014 

---

Edit this page | Discuss this page | Page history | What links here | Related changes




Datsun 1200 encyclopedia | About Datsun 1200 Club | Switch to MediaWiki mode