Cowl

(Difference between revisions)

Revision as of 21:49, 7 September 2016

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.

See main article: Steering Post Bracket

These parts make up the Cowl:

• Cowel Top
• Dash-Upper
• Dash-Lower (see Dash Panel section below)
• Dash-Side

Album 19384

Post 318721

View from engine compartment:

View from inside cabin:

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.

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).

Lower Dash panel:

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:

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

The dash unit mounts via three brackets welded to the firewall

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.

See Water Box Rust

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