Head Bolts

(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
Categories: Cylinder Heads | Engine Mechanical

---

Revision as of 00:50, 8 August 2010 ddgonzal (Talk | contribs) <- Previous diff		Current revision ddgonzal (Talk | contribs)
Line 1:		Line 1:
-	Also see [[Changing Head Gasket]]	+	A-series head bolts are designed to be reused; they are not Torque-To-Yield (TTY) bolts.
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=22286 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/22286.jpg]	+	= Maintenance Schedule =
		+	Retighten cylinder head bolts every 24 months or 24000 miles whichever comes first.
-	Original Lo-torque bolts (B10 & early B110 -1172) - 36 ft-lb	+	{{OwnersManual|32|32|24 months/24000 miles}}
-	* 11056-18001 BOLT-FIXING CYLINDER HEAD SHORT	+
-	* 11057-18000 BOLT-FIXING CYLINDER HEAD LONG	+
-	* 11058-18000WASHER-LOCK FIXING CYLINDER HEAD	+
		+	600 mile service
		+	24 months/24000 miles
-	Newer medium torque bolts (1272-) - 43 ft-lb	+	See [[Changing Head Gasket]] for torque specifications and procedure.
-	* 11056-H1000 BOLT-FIXING CYLINDER HEAD SHORT (9 needed) $2.90	+
-	* 11057-H1000 BOLT-FIXING CYLINDER HEAD LONG [Center bolt] $2.51	+
-	* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD $2.28	+
		+	= Overview =
		+	BOLT-FIXING CYLINDER HEAD SHORT [9 needed, 97 mm length]
		+	11056-18001 36 lb ft [Original use: A10 & A12]
		+	11056-H1000 43 lb ft [original use: A12]
		+	11056-H2301 58 lb ft [original use: A12GX]
-	A12GX, A12T, A12S, A13, A14, A15, A12A - 58 ft-lbs	+	{{Album|22286}}
-	* 11056-H2301 HEAD BOLT SHORT (9 needed) $3.96	+
-	** NOTE Some newer lo-power (round port) A12S are spec'd for 11056-H1000	+
-	* 11057-H2301 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (TO 6/73) $3.88	+
-	* 11057-H5000 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (FROM 7/73) $4.03	+
-	* superceeded 11057-H5700?	+
		+	BOLT-CYLINDER HEAD, TO OIL GALLERY [1 needed]
		+	11057-18000 '
		+	11057-H1000 'T'
		+	11057-H2300 '13' for 1967-1973 engines [97 mm length]
		+	11057-H5700 '13' for 1974-up engines [111 mm length]
-	Lock Washer	+	{{Album|23623}}
-	* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD -8504 $2.28	+
-	* 11058-21002 Washer Cyl Head 8504- $2.57	+
-	[http://datsun1200.com/modules/myalbum/photo.php?lid=22287 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/22287.jpg]	+	Bolts are the same for A12/A14/A15, but:
		+	* A14/A15 require the stronger bolts (marked '13')
		+	* A14/A15 has one longer bolt<br>{{UploadPostH|174_61f9b21aa96ea.jpg|496525}}
-	[[Category:Engine Mechanical]]	+	= Strengthened Cylinder Head Bolts =
		+	stronger bolts (marked '13')
		+	<br>{{Album|24733}}
		+
		+	1973 A12 (early engine, upgraded H1000 bolts)
		+	Torque: 40-43 ft-lb
		+	CENTER BOLT: 8 mm central portion (head marked 'T')
		+	OTHER BOLTS: 9 mm
		+	{{UploadPost|174_61f9b20aab940.jpg|496525}}
		+	{{UploadPost|174_61f9b226472ee.jpg|496525|was=Photo\1973_head_bolt.jpg}}
		+
		+	Note 'T' bolt for center of early A12 engine. This is a low-torque bolt. The center bolt is thinner to allow [[Cylinder_Head_Identification#Cylinder_head_oil_passage|oil to flow around]] it up to the rocker shaft.
		+	<br>{{Album|24528}}
		+
		+	'12' bolts
		+	<br>{{UploadPost|174_50033e73ecea0.jpg|413008}} {{UploadPost|174_50033e859f7a8.jpg|413008}} {{UploadPost|174_50033e8cbbcd9.jpg|413008}}
		+
		+	Better to use the GX '13' center bolt, which is high-tensile chromoly V steel
		+	<br>{{Album|4775}} {{UploadPost|7952_4cf7626132cc9.jpg|348263}} {{UploadPost|7952_4cf7639da9b87.jpg|348263}}
		+	<br>"13" bolts were first used on the twin-carb [[A12GX Engine]], as opposed to single-carb engine bolts. "13" bolts can be used with any early engine (they are simply stronger than the earliest bolts).
		+
		+	Note that A12/A12A/A13/A14/A15 all may use the '13' bolts, but the center bolt differs between early engines and late engines.
		+
		+	Center bolt 11057-H5000 and 11057-H5700 are interchangeable
		+	<br>{{UploadPost|6595_4a2b961066620.jpg|257619}}
		+
		+	= Part Numbers =
		+	Original Lo-torque bolts (B10 & early B110 -1172) - 36 ft-lb
		+	* 11056-18001 BOLT-FIXING CYLINDER HEAD SHORT
		+	* 11057-18000 BOLT-FIXING CYLINDER HEAD LONG
		+	* 11058-18000WASHER-LOCK FIXING CYLINDER HEAD
		+
		+	Newer medium torque bolts (1272-) - 43 ft-lb
		+	* 11056-H1000 BOLT-FIXING CYLINDER HEAD SHORT (9 needed) $2.90
		+	* BOLT-FIXING CYLINDER HEAD LONG [Center bolt] $2.51
		+	superceded by 11057-H5000/11057-H5010
		+	* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD $2.28
		+
		+	A12GX, A12T, A12S, A13, A14, A15, A12A - 58 ft-lbs
		+	* 11056-H2301 HEAD BOLT SHORT (9 needed) $3.96
		+	Also used by Z16/Z18/Z20/Z22 (10 per engine)
		+	NOTE Some newer lo-power (round port) A12S are spec'd for 11056-H1000
		+	* 11057-H2301 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (TO 6/73) $3.88
		+	one needed
		+	* 11057-H5700 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (FROM 7/73) $4.03
		+	one needed
		+	Also used by Z24, KA24E, NA20P (10 per engine)
		+	replaced 11057-H5000 (lo-torque version)
		+	* used by 1988- D21/WD21/C22 Z24 engine
		+
		+	A12: Long middle bolt marked 'T' (low-torque)
		+	<br>A14: Long middle bolt marked '13' (hi-torque)
		+	<br>{{Album|24528}}
		+
		+	Hi-torque bolts marked "13" on the head. Remove the valve cover to verify.
		+	<br>{{Album|23377}}
		+
		+	head bolts
		+	Cro-Mo-V steel
		+	13T
		+
		+	Lock Washer
		+	* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD -8504 $2.28
		+	* 11058-21002 Washer Cyl Head 8504- $2.57
		+
		+	{{Album|22287}}
		+
		+	KA24E - 1989-1993 Nissan 240SX
		+	11057-H5010 10 needed
		+	* Same as Datsun 1200 center bolt
		+
		+	KA24E - 1994-1998 Nissan 240SX
		+	11056-F3F01 10 needed. TTY bolts, do not reuse
		+	* reportedly shorter than Datsun 1200/KA24E SOHC
		+
		+	Z20/Z22 Datsun 720
		+	11056-H2301 10 needed
		+	* Same as Datsun 1200 (9 needed)
		+
		+	Z24 Datsun 720
		+	11057-H5000 10 needed
		+	* Same as late Datsun 1200 (center bolt)
		+
		+	= ARP Head Studs =
		+	{{Main|ARP#Cylinder_Head_Studs}}
		+
		+	[[Category:Cylinder Heads]][[Category:Engine Mechanical]]{{End}}

---

Current revision

A-series head bolts are designed to be reused; they are not Torque-To-Yield (TTY) bolts.

Contents 1 Maintenance Schedule 2 Overview 3 Strengthened Cylinder Head Bolts 4 Part Numbers 5 ARP Head Studs

Maintenance Schedule

Retighten cylinder head bolts every 24 months or 24000 miles whichever comes first.

600 mile service
24 months/24000 miles

See Changing Head Gasket for torque specifications and procedure.

Overview

BOLT-FIXING CYLINDER HEAD SHORT [9 needed, 97 mm length]
11056-18001 36 lb ft [Original use: A10 & A12]
11056-H1000 43 lb ft [original use: A12]
11056-H2301 58 lb ft [original use: A12GX]

Album 22286

BOLT-CYLINDER HEAD, TO OIL GALLERY [1 needed]
11057-18000 '
11057-H1000 'T'
11057-H2300 '13' for 1967-1973 engines [97 mm length]
11057-H5700 '13' for 1974-up engines [111 mm length]

Album 23623

Bolts are the same for A12/A14/A15, but:

• A14/A15 require the stronger bolts (marked '13')
• A14/A15 has one longer bolt
  Post click for topic

Strengthened Cylinder Head Bolts

stronger bolts (marked '13')
Album 24733

1973 A12 (early engine, upgraded H1000 bolts)
Torque: 40-43 ft-lb
CENTER BOLT: 8 mm central portion (head marked 'T')
OTHER BOLTS: 9 mm
Post 496525
Post 496525

Note 'T' bolt for center of early A12 engine. This is a low-torque bolt. The center bolt is thinner to allow oil to flow around it up to the rocker shaft.
Album 24528

'12' bolts
Post 413008 Post 413008 Post 413008

Better to use the GX '13' center bolt, which is high-tensile chromoly V steel
Album 4775 Post 348263 Post 348263
"13" bolts were first used on the twin-carb A12GX Engine, as opposed to single-carb engine bolts. "13" bolts can be used with any early engine (they are simply stronger than the earliest bolts).

Note that A12/A12A/A13/A14/A15 all may use the '13' bolts, but the center bolt differs between early engines and late engines.

Center bolt 11057-H5000 and 11057-H5700 are interchangeable
Post 257619

Part Numbers

Original Lo-torque bolts (B10 & early B110 -1172) - 36 ft-lb
* 11056-18001 BOLT-FIXING CYLINDER HEAD SHORT
* 11057-18000 BOLT-FIXING CYLINDER HEAD LONG 
* 11058-18000WASHER-LOCK FIXING CYLINDER HEAD 

Newer medium torque bolts (1272-) - 43 ft-lb
* 11056-H1000 BOLT-FIXING CYLINDER HEAD SHORT (9 needed) $2.90
*  BOLT-FIXING CYLINDER HEAD LONG [Center bolt] $2.51
   superceded by 11057-H5000/11057-H5010
* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD $2.28 

A12GX, A12T, A12S, A13, A14, A15, A12A - 58 ft-lbs
* 11056-H2301 HEAD BOLT SHORT (9 needed) $3.96
  Also used by Z16/Z18/Z20/Z22 (10 per engine)
  NOTE Some newer lo-power (round port) A12S are spec'd for 11056-H1000
* 11057-H2301 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (TO 6/73) $3.88
  one needed
* 11057-H5700 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (FROM 7/73) $4.03
  one needed
  Also used by Z24, KA24E, NA20P (10 per engine)
  replaced 11057-H5000 (lo-torque version)
  * used by 1988- D21/WD21/C22 Z24 engine

A12: Long middle bolt marked 'T' (low-torque)
A14: Long middle bolt marked '13' (hi-torque)
Album 24528

Hi-torque bolts marked "13" on the head. Remove the valve cover to verify.
Album 23377

head bolts
Cro-Mo-V steel
13T

Lock Washer 
* 11058-H1000 WASHER-LOCK FIXING CYLINDER HEAD -8504 $2.28 
* 11058-21002 Washer Cyl Head 8504- $2.57

Album 22287

KA24E - 1989-1993 Nissan 240SX
11057-H5010 10 needed
* Same as Datsun 1200 center bolt

KA24E - 1994-1998 Nissan 240SX
11056-F3F01 10 needed. TTY bolts, do not reuse
* reportedly shorter than Datsun 1200/KA24E SOHC

Z20/Z22 Datsun 720
11056-H2301 10 needed
* Same as Datsun 1200 (9 needed)

Z24 Datsun 720
11057-H5000 10 needed
* Same as late Datsun 1200 (center bolt)

ARP Head Studs

 

---

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




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