Revision as of 00:23, 13 June 2014

The Timing Cover is the aluminum part on the front of the engine that covers the Timing Chain. It also has a timing mark on the cover and houses the crankshaft pulley seal.

1 Overview
- 1.1 Matched Set
2 Interchange
3 Gasket
4 Seal
5 Corrosion
6 Tach Drive
7 Customized
8 Part Numbers
- 8.1 USA

Overview

The Timing Cover bolts to the front of the engine block and covers the Timing Chain. The Water Pump bolts to the timing cover.

Depending on the country, 1971 or 1973 saw newer timing covers which differ from earlier covers.

Water pump bolts to the timing cover. And the cover bolts to the front of the block, and passes water through two ports (the square hole, and the round hole).

Matched Set

Japan got this change in June 1970. North America: all A-series engines from 1972 including 1973 A12.

Early Set
Multiple-mark Crankshaft Pulley
Single-mark Timing Cover

Late Set
Single-mark Crankshaft Pulley
Multiple-mark Timing Cover

Interchange

The same covers are used by A10, A12, A12A, A13, A14 and A15, except for the first type:

1. Original Datsun 1000 timing cover, for single-row timing chain 
   13035-18000 ASSY-COVER TIMING CHAIN 
2. to June 1970, with single timing mark (pulley has multiple marks)
   13035-18001 ASSY-COVER TIMING CHAIN 
   [updated to fit Double timing chain & pressure tensioner]
3. from June 1970, with multiple timing marks (pulley has single mark)
   13035-H1000 (or from second source: 13035-H1010) 
   [Fits all A10 blocks]

Interchange is same for same. The last two will interchange if the complete set of pulley & cover is used.

Gasket

FEL-PRO Part # TCS24531 RockAuto.com $6.74
BECK/ARNLEY Part # 0380071

Seal

See Crankshaft Seal

Corrosion

Tach Drive

Race engines sometimes use a mechanical tachometer drive off the camshaft, with the Timing Cover modified to suit.

See Tach Drive

Customized

Tachometer drive

Access cover for adjustable timing gear

Part Numbers

Nissan 13035-H1000 $102.77 USD 
Bprojects E-G-0190 ¥10,800 yen

USA

B110 RAW LIST

13035-H1000 ASSY-COVER TIMING CHAIN
13035-18001 ASSY-COVER TIMING CHAIN
13042-18000 SEAL-OIL CRANKSHAFT FRONT
13510-H1000 SEAL-OIL CRANKSHAFT FRONT (NOK)
13083-18001 TENSIONER-CHAIN TENSION SIDE
13084-18000 SUPPORT-TENSIONER TENSION SIDE
08110-62010 BOLT M6 FIXING TENSIONER
11046-73402 DOWEL-WATER PUMP
11023-32200 DOWEL-WATER PUMP
08110-64010 BOLT-HEX
08915-1361A WASHER-LOCK
08915-13610 WASHER-LOCK
13044-18001 GASKET-TIMING CHAIN COVER