Crossmember

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The engine-mounting cross-member is what Datsun calls the "front suspension member", also known as x-member (X for cross).

Also See: Engine Mounts (for rubber insulators and engine brackets)

Front Crossmember

1970-1973 1200 Crossmember (two high towers)

Rear: Late 1200 crossmember (one short tower, one high tower)
Front: Early 1200 crossmember
Album 13676

The engine crossmember for the Datsun 1200 fits the 1971-1973 A12 engine. The A10 engine from the earlier Datsun 1000 will also bolt in. To fit a newer engine -- a 1974-up A12 or A13, A14 or A15 -- a newer crossmember may be used, or an modified motor mount brackets may be fabricated (see A-series Engine Swaps). The newer crossmember is from the 1974-up Datsun 1200 truck. Note that B210 or other crossmembers do not fit the 1200.

For engine types other than A-series, see: Engine Swaps

Early A12 vs. Late A12 ute (suitable for 1974-up A12, A13, A14 or A15)
Album 8487

Modified -- newer engine mounts sit further back on right side
Album 14316

B110 holes are 656 mm apart, and 60mm from each other
Album 22877

PB110 Crossmember

L14-powered B210 uses L-series towers and mid-sump design.

See L/Z/KA/SR_Crossmember

B210 Comparison

120Y vs B110
Album 12432
120Y (A12-powered B210) is slighty wider, and of course has late style mounts suitable for late A12 + A14/A15.

North American A13/A14-powered B210 has a mid-sump crossmember, almost exactly identical to the 510 crossmember. See L/Z/KA/SR_Crossmember.

Crossmember Bolting Dimensions
B110  656   mm X 60mm
B210  760.6 mm X 62mm(?) or 80mm(?)

Album 26089 Album 26088

Installation & Removal

See main article: Changing Crossmember

Part Numbers

フロント　サスペンシヨン　メンバー

54480M
B110 & early B120
* 54401-H3900 MEMBER ASS'Y-front suspension 
  08194-06510 BOLT (4)
  32886-22000 WASHER-body bolt (8)
  08915-14010 WASHER-lock (4)
  08911-54010 NUT (4)
* 54401-H1000 [early part, interchangable with -H3900]
  81-94065-1 BOLT (4)
  32886-22000 WASHER-body bolt (8)
  89-15140-1 WASHER-lock (4)
  89-11540-1 NUT (4)

Late B120
* 54401-G1601 MEMBER ASSY-FRONT SUSPENSION 8504-
  replaced 54401-G1600 MEMBER ASSY-FRONT SUSPENSION 7510-8503

Front Suspension Part Numbers
Album 4921

Album 21274 Album 25584

Measurements

Front engine crossmember bolts
* 11 mm holes
* 8 mm forward of strut centerline
* 60 mm front-to-rear spacing
* 656 mm left-to-right
* 405 mm from rear bolt to Front core support mounting hole

Strut Tower to Strut Tower centers
* 936 mm width

Album 22877 Album 23748

Rear Crossmember

See Main Article: Gearbox Mount

The transmission crossmember (gearbox crossmember) is called by Datsun the rear engine mounting member.