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[Datsun 1200 encyclopedia]

Timing Chain

(Difference between revisions)

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Categories: Engine Mechanical | Valvetrain

Revision as of 23:23, 29 December 2012
ddgonzal (Talk | contribs)
(->Adjustable Cam Gear)
<- Previous diff
Revision as of 23:39, 12 June 2014
ddgonzal (Talk | contribs)
(->Part Numbers)
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Line 43: Line 43:
The timing chain kit (timing set) includes: Cam, Crank, Chain, Tensioner The timing chain kit (timing set) includes: Cam, Crank, Chain, Tensioner
-* CLOYES Part # 94054S [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,11919 RockAuto.com $35.79]+ KIT
-* CLEVITE/PERFECT CIRCLE Part # 92602 + * CLOYES Part # 94054S [http://www.rockauto.com/catalog/x,carcode,1430310,parttype,5756 RockAuto.com $35.79]
- + [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/9-4054S.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_9-4054S.jpg]
-http://info.rockauto.com/Cloyes/94054S.jpg+ * CLEVITE/PERFECT CIRCLE Part # 92602
 + * ITM 05390500 [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,11919 RockAuto.com $32]
 + [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/053-90500.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_053-90500.jpg]
== Cam Sprocket== == Cam Sprocket==
- (38 teeth)+ 38 teeth * CLOYES Part # S47 [http://www.rockauto.com/catalog/x,carcode,1430310,parttype,5722 RockAuto.com $9.41]
-* CLOYES Part # S47 [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,5722 RockAuto.com $9.41]+ [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/S478.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_S478.jpg]
-http://www.cloyes.com/CloyesMDB/Images/Large/S478.jpg+
- +
== Chain == == Chain ==
Same as SRL311 with U20 engine (for Jackshaft) Same as SRL311 with U20 engine (for Jackshaft)
-* CLOYES Part # S478 [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,5724 RockAuto.com $9.40]+ CHAIN [http://www.rockauto.com/catalog/x,carcode,1430310,parttype,5724 RockAuto.com]
-* BECK/ARNLEY Part # 0240226+ * CLOYES Part # S478 $9.40
-http://info.rockauto.com/Cloyes/94054.jpg+ * CLOYES 94054 $9.70
 + [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/94054.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_94054.jpg]
 + * BECK/ARNLEY Part # 0240226
 + [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/0240226.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_0240226.jpg]
 + * ITM 2354 $7
 + 
 + specs
 + Links: 54
 + Pitch: 3/8 inch
 + Rollers: Double
 + Timing Marks: 2
== Tensioner == == Tensioner ==
-* CLOYES Part # 95005 [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,5736 RockAuto.com] $3.90+ * CLOYES Part # 95005 [http://www.rockauto.com/catalog/x,carcode,1208483,parttype,5736 RockAuto.com] $3.90
- + [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/95005-1.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_95005-1.jpg] [http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/95005-2.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/Parts/th_95005-2.jpg]
-<img size=240>http://info.rockauto.com/Cloyes/95005.jpg</img>+
== Crank Sprocket == == Crank Sprocket ==

Revision as of 23:39, 12 June 2014

The Timing Chain drives the Camshaft.

Also see: Timing Cover

Contents

Overview

We have seen a couple of single link timing chains on A12, which is the original A10 single row chain. Insist on the factory specified double-chain, like Nissan did for later A10s.
NOT GOOD
24938.jpg 24939.jpg


  • A rattle can be the trait of a stretched timing chain. Pinging/pinking has also often been mistaken for timing chain rattle


A-series engine has a short timing chain -- and with an automatic adjuster -- it rarely stretches or goes bad.
24803.jpg

Compare to the loooooong chaing used in the Nissan KA24E engine:
click

  • KA24 often has timing chain problems

Replacement

14385.jpg

Alignment

Check the cam gear alignment. It should be exactly like this:

174_4ee9b6405e4fc.jpg

If it is not, see Camshaft#Timing.


697.jpg

3639.jpg http://datsun1200.com/modules/myalbum/photos/thumbs/3640jpg

7339.jpg 7340.jpg


14366.jpg

Part Numbers

The timing chain kit (timing set) includes: Cam, Crank, Chain, Tensioner

KIT
* CLOYES Part # 94054S RockAuto.com $35.79
  th_9-4054S.jpg
* CLEVITE/PERFECT CIRCLE Part # 92602
* ITM 05390500 RockAuto.com $32
  th_053-90500.jpg

Cam Sprocket

38 teeth * CLOYES Part # S47 RockAuto.com $9.41
th_S478.jpg

Chain

Same as SRL311 with U20 engine (for Jackshaft)

CHAIN RockAuto.com
* CLOYES Part # S478 $9.40
* CLOYES 94054 $9.70
  th_94054.jpg
* BECK/ARNLEY Part # 0240226
th_0240226.jpg
* ITM 2354 $7
specs
Links: 54
Pitch: 3/8 inch
Rollers: Double
Timing Marks: 2

Tensioner

* CLOYES Part # 95005 RockAuto.com $3.90
th_95005-1.jpg th_95005-2.jpg

Crank Sprocket

19 teeth

S477.jpg

USA

B110 RAW LIST
13024-H8500 SPROCKET-CAMSHAFT
13024-18001 SPROCKET-CAMSHAFT
13082-18000 BOLT-CAMSHAFT SPROCKET
13030-18000 WASHER-CAMSHAFT
08915-2401A WASHER-LOCK
08915-14010 WASHER-LOCK
13028-18001 CHAIN-CAMSHAFT
13070-18001 ASSY-TENSIONER CHAIN
08120-63510 BOLT-FIXING CHAIN TENSIONER
08915-13610 WASHER-LOCK FIXING CHAIN TENSIONER

Adjustable Cam Gear

Fitting an adjustable Camshaft gear lets you fine tune the timing. The cam vendor's recommendations are usually best, but retarding the cam a degree or two will generall shift the torque curve higher up in the RPM range. Advancing the cam will (usually) lower the power curve a few RPM.

th_ps13kai_0399-img600x450-1335611934sqhy0p82792.jpg th_ps13kai_0399-img600x450-1335611934g5pec482792.jpg

Adjustable gears come in a few basic kinds:

  • Multi-key. Rollmaster had one with nine adjustible keys in the crank sprocket
  • Multi-hole. Using different holes
  • Variable: Slotted holes allow a continuously variable range

682.jpg Tomei 3639.jpg 3640.jpg

7339.jpg Rollermaster