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| Retighten cylinder head bolts every 24 months or 24000 miles whichever comes first. | Retighten cylinder head bolts every 24 months or 24000 miles whichever comes first. | ||
| - | [http://ddgonzal.members.winisp.net/wiki/om1972/32.jpg http://ddgonzal.members.winisp.net/wiki/om1972/thumbs/32.jpg] | + | [http://s297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/owners_manual/1972 http://s297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/owners_manual/1972/th_32.jpg] |
| 600 mile service | 600 mile service | ||
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| [http://datsun1200.com/modules/myalbum/photo.php?lid=24733 http://datsun1200.com/uploads/photos/24733.jpg] | [http://datsun1200.com/modules/myalbum/photo.php?lid=24733 http://datsun1200.com/uploads/photos/24733.jpg] | ||
| - | [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] | + | [http://datsun1200.com/modules/myalbum/photo.php?lid=22286 http://datsun1200.com/uploads/photos/thumbs/22286.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=23623 http://datsun1200.com/uploads/photos/thumbs/23623.jpg] |
| - | + | ||
| - | [http://datsun1200.com/modules/myalbum/photo.php?lid=23623 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/23623.jpg] | + | |
| = Part Numbers = | = Part Numbers = | ||
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| * 11058-18000WASHER-LOCK FIXING CYLINDER HEAD | * 11058-18000WASHER-LOCK FIXING CYLINDER HEAD | ||
| - | [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 http://datsun1200.com/uploads/newbb/174_50033e73ecea0.jpg] [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 http://ddgonzal.members.winisp.net/getThumb.aspx?width=140&uri=http://datsun1200.com/uploads/newbb/174_50033e859f7a8.jpg] [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 http://ddgonzal.members.winisp.net/getThumb.aspx?width=140&uri=http://datsun1200.com/uploads/newbb/174_50033e8cbbcd9.jpg] | + | [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 http://datsun1200.com/uploads/newbb/174_50033e73ecea0.jpg] [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 [http://datsun1200.com/uploads/newbb/174_50033e859f7a8.jpg]] [http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=56794 [http://datsun1200.com/uploads/newbb/174_50033e8cbbcd9.jpg]] |
| Newer medium torque bolts (1272-) - 43 ft-lb | Newer medium torque bolts (1272-) - 43 ft-lb | ||
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| * superceeded 11057-H5700? | * superceeded 11057-H5700? | ||
| - | [http://datsun1200.com/modules/myalbum/photo.php?lid=24528 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/24528.jpg] | + | [http://datsun1200.com/modules/myalbum/photo.php?lid=24528 http://datsun1200.com/uploads/photos/thumbs/24528.jpg] |
| <br>A12: Long middle bolt marked 'T' | <br>A12: Long middle bolt marked 'T' | ||
| <br>A14: Long middle bolt marked '13' | <br>A14: Long middle bolt marked '13' | ||
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| * 11058-21002 Washer Cyl Head 8504- $2.57 | * 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] | + | [http://datsun1200.com/modules/myalbum/photo.php?lid=22287 http://datsun1200.com/uploads/photos/thumbs/22287.jpg] |
| [[Category:Engine Mechanical]] | [[Category:Engine Mechanical]] | ||
Revision as of 20:16, 14 October 2012
A-series head bolts are designed to be reused; they are not Torque-To-Yield (TTY) bolts.
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 11056-18001 36 lb ft 11056-H1000 43 lb ft 11056-H2301 58 lb ft
Bolts are the same for A12/A14/A15, but require the stronger bolts.
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
[http://datsun1200.com/uploads/newbb/174_50033e859f7a8.jpg] [http://datsun1200.com/uploads/newbb/174_50033e8cbbcd9.jpg]
Newer medium torque bolts (1272-) - 43 ft-lb
- 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
A12GX, A12T, A12S, A13, A14, A15, A12A - 58 ft-lbs
- 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
- one needed
- 11057-H5000 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (FROM 7/73) $4.03
- one needed
- Also used by Z24 and KA24E
- superceeded 11057-H5700?
A12: Long middle bolt marked 'T'
A14: Long middle bolt marked '13'
Hi-torque bolts marked "13" on the head. Remove the valve cover to verify.
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
