classicretrofit Posted January 20, 2024 Posted January 20, 2024 Footwell ‘snorkel’ modification We have found this simple modification to be highly effective at increasing cabin cooling. We supply a 50mm duct that can be used to redirect air from the footwell blower to the cabin. This is essential on cars with no centre vents. It might look odd but you cannot see the ducts when sat in the car. Remove the factory deflector plate from the bottom of the blend valve. Refit the screws (with a 3mm spacer/washer) to secure the blend valve again. red – hot out when rear heat ‘flaps’ are open / orange – cabin recirculation / blue – AC air out Looking up into the valve you will see that it is divided into two ‘D’ shaped halves. The half furthest from you (nearest the front of the car) will be where the cold A/C air comes out (the other one is hot air out or recirc drawn out of the cabin). Using half of the 50mm duct, form one end into a ‘D’ shape and wrap with foam tape provided. This can then be pushed up into the blend valve and be used to direct air as you wish: Forming the ‘D’ shaped end – foam tape provides seal to blend valve. Simple redirect of A/C air makes a big difference to comfort. Front finished with rubber edging and secured with a cable tie and adhesive pad. Experiment with positioning with blower running. We now have these custom made directional underdash ducts which are available for a more effective solution.
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