Cowl

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The cowl is the part of a car body between the engine compartment and the dash face. The cowl includes the firewall, cowl top panel, and upper & lower dash panels -- but not the dash itself. For the Datsun 1200, the cowl is where fresh air for ventilation is drawn.

Also See

* Bonnet (hood) for engine covering
* Cowl Top Grille 
* Ventilation
* Tunnel which is built of Lower Dash + Front Floor

Firewall & Dash

The steering post bracket bolt to the firewall.

These parts make up the Cowl:
Album 23934

• Cowel Top
• Dash-Upper
• Dash-Lower
• Dash-Side

Album 19384

Post 318721

View from engine compartment:
Album 1759

View from inside cabin:
Album 11732

The water box is also known as the ventilation plenum -- it is where air enters the cabin. The large oval hole in the center is for the heater (or ventilator). The cowl vents are located at the base of the windshield due to aerodynamic reasons.

Cabin air Inlet
Post 489971

Normally, rainwater goes in through the top through the Cowl vents and falls onto the topside of the Upper Dash panel. From there it runs out a vent hole on the outside of the panel near the guards (fenders).

Post 489971 Post 489971 Post 489971

Lower Dash panel:
Album 4663 Album 4661

In this photo, the Reinforcement has been removed, and you can see how the hoodledge joins with the firewall and radiator panel to form the engine compartment:
Album 4665

How the hoodledge (inner fender) ties in to the A-pillar:
Album 23935

The dash unit mounts via three brackets welded to the firewall
Album 5044

Insulation

Post 487976

• Low-density Fibreboard (LDF) insulation is used on the inside of the firewall.
• Medium-density fibreboard is used on the Kick Panel

RHD 4-DR SEDAN, WAGON, EARLY UTE
67900-H1000 ASSY-DASH INSULATOR LH
67901-H1000 ASSY-DASH INSULATOR RH

LHD 2-DR SEDAN, COUPE
67900-H1600 ASSY-DASH INSULATOR RH
67901-H1600 ASSY-DASH INSULATOR LH

Repairing Water Box

Water comes in though the vents behind the bonnet, then runs down to a hole that is there to let it out. If this is rusted, it will instead leak down onto the fenders.

Part Numbers

* 66301-H1000 PANEL-cowl top JAPAN
* 66301-H1600 PANEL-COWL TOP USA
* 66810-H1001 PLATE-BAFFLE COWL TOP RH
* 66811-H1001 PLATE-BAFFLE COWL TOP LH

* 24426-H1001 ASS'Y-BRACKET, battery
* 24427-H1001 STAY-BATTERY BRACKET
  * 24427-H1000 STAY-BATTERY BRACKET
  * 77720-89910 BOLT-SPECIAL

RHD

67300-H1000 ASS'Y-PANEL, dash, lower
67300-H1021 ASS'Y-PANEL, dash, lower Automatic
* 74306-H1020 ASS'Y-PANEL, A/T floor cover, front
46570-H1001 ASS'Y-BRACKET, pedal & steering post
* 81-10620-62 BOLT-with lock washer (fixing reinforcing & stay) (8)
46575-H1001 BRACKET-clutch cable
46582-H1000 PACKING-clutch cable bracket
* 83-10614-62 SCREW (3)
* 89-15436-1 WASHER-plain (3)

LHD

67300-H1600 ASSY-PANEL DASH LOWER
67300-H1601 ASSY-PANEL DASH LOWER
67300-H1922 ASSY-PANEL DASH LOWER
67300-H1921 ASSY-PANEL DASH LOWER
46570-H1600 ASSY-BRACKET PEDAL & STEERING POS